SECTION 303-06: Starting System
2014 Flex Workshop Manual
DIAGNOSIS AND TESTING
Procedure revision date: 06/28/2013

Starting System


Special Tool(s)
Flex Probe Kit
NUD105-R025D or equivalent
Circuit Tester / Test Light
SGT27000
 

Inspection and Verification

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Section 100-00 for information regarding Ford-specific diagnostic practices.

  1. Verify the customer concern by operating the starting system.
  1. Check the battery condition and state of charge. Refer to Section 414-01 .
  1. Remove the accessory drive belt. Refer to Section 303-05 . Verify the crankshaft and each of the components driven by the accessory drive belt rotate and are not seized or damaged.
  1. If any aftermarket accessories have been added to the vehicle, make sure they are properly wired.
  1. If an obvious cause for an observed or reported concern is found, correct the cause before proceeding.
 

DTC Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

 


 RFA DTC Chart

NOTE: Any push-button start system fault results in DTCs being stored in the RFA module and BCM . Correct all RFA module DTCs prior to diagnosing the BCM DTCs .

DTC Description Action
RFA DTCs For all RFA DTCs REFER to Section 419-10 .

 


 PCM DTC Chart

DTC Description Action
PCM DTCs PCM DTCs not listed in this chart REFER to Section 303-14 .
P0512 Starter Request Circuit CARRY OUT the Ignition Switch component test. Refer to Wiring Diagrams Cell 149 for component testing. If necessary, INSTALL a new ignition switch. REFER to Section 211-05 . If the ignition switch passed the component test, REPAIR circuit CDC35 (BU/WH) for a short to voltage.
P0706 Transmission Range Sensor "A" Circuit Range/Performance REFER to Section 307-01 .
P0708 Transmission Range Sensor "A" Circuit High REFER to Section 307-01 .
P161A Incorrect Response From Immobilizer Control Module REFER to Section 419-01B or Section 419-01C .
P1702 Transmission Range Sensor Circuit Intermittent REFER to Section 307-01 .
P1705 Transmission Range Circuit Not Indicating Park/Neutral During Self Test REFER to Section 307-01 .

 


  BCM DTC Chart

DTC Description Action
BCM DTCs BCM DTCs not listed in this chart REFER to Section 419-10 .
B1305:01 Hood Switch: General Electrical Failure REFER to Section 419-01A .
C113A:11 Wake up Control: Circuit Short to Ground GO to Pinpoint Test D .
C113A:15 Wake up Control: Circuit Short to Battery or Open GO to Pinpoint Test D .
U1000:00 Solid State Driver Protection Activated - Driver Disabled: No Sub Type Information The BCM has temporarily disabled an output because an excessive current draw exists (such as a short to ground). The BCM cannot enable the output until the cause of the short is corrected. ADDRESS all other DTCs first. After the cause of the concern is corrected, CLEAR the DTCs . REPEAT the self-test.

 


  TPM DTC Chart

DTC Description Action
TPM DTCs TPM DTCs not listed in this chart REFER to Section 419-10 .
B1D55:01 Antenna #2: General Electrical Failure GO to Pinpoint Test E .

 

Symptom Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

 
Symptom Chart
Condition Possible Sources Action
  • The engine does not crank — Without IA
  • Refer to the Diagnostic Routine
  • The engine does not crank — With IA
  • Refer to the Diagnostic Routine
  • The engine cranks slowly
  • Battery
  • Battery cables
  • Starter motor
  • Wiring, terminals or connectors
  • CARRY OUT the Starter Motor — Feed Circuit and Starter Motor — Ground Circuit Tests. REFER to Component Tests in this section.
  • The engine cranks but does not start.
  • Fuses
  • Fuel pump
  • Fuel pump relay
  • PCM
  • Powertrain Control/Emissions Diagnosis (PC/ED) manual
  • Unusual starter noise
  • Refer to the Diagnostic Routine
  • The starter spins but the engine does not crank
  • Starter motor
    • Damaged flexplate
    • The starter does not disengage from the Flexplate
    • Starter relay
    • Wiring, terminal or connectors
    • REMOVE the starter relay, if the engine stops cranking INSTALL a new relay. If the engine continues to crank, REPAIR circuit CDC25 (BN/GN) for a short to voltage.
    • The remote start system operates with reduced range
    • Refer to the Diagnostic Routine
    • The remote start is inoperative
    • Refer to the Diagnostic Routine
     

    Pinpoint Tests

     

    Pinpoint Test A: The Engine Does Not Crank (Without Push Button Start)

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 20 , Starting System for schematic and connector information.

    Normal Operation and Fault Conditions

    The BCM and PCM receive a request to crank the engine when the ignition switch is turned to the START position. When the PCM receives the correct inputs from the BCM , voltage from the Run/start relay, and notification from the TR sensor that the gear selector is in PARK or NEUTRAL, the PCM then supplies voltage and ground to the starter relay coil. The energized coil causes the starter relay contacts to close. This allows voltage to be supplied from the BJB to the starter solenoid coil. The starter solenoid coil is grounded at the starter motor. Energizing the starter solenoid closes the solenoid contacts allowing voltage directly from the battery to the starter motor, engaging the starter drive into the ring gear causing the engine to crank. The PCM disengages the starter motor once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the ignition switch has been turned to the OFF position.

     
    PINPOINT TEST A: ENGINE DOES NOT CRANK (WITHOUT PUSH BUTTON START)
    Test Step Result / Action to Take
      A1 PERFORM INSPECTION AND VERIFICATION  

      NOTE: Make sure battery voltage is greater than 12.2 volts prior to and during this pinpoint test.

      NOTE: If it is necessary to leave the battery charger connected during testing, do not leave it on its highest or boost setting. The highest settings can exceed 16 volts, resulting in false test results and setting of DTCs .

    • Perform Inspection and Verification procedure in this section.
    • Was an obvious cause for an observed or reported concern found?
    		Yes
    Correct the cause as necessary.

    No
    GO to A2
      A2 CHECK FOR ANY MESSAGES IN THE MESSAGE CENTER  
    • Check the message center while holding the ignition key in the start position.
    • Is STARTING SYSTEM FAULT displayed in the message center?
    		Yes
    DIAGNOSE STARTING SYSTEM FAULT displayed in the message center. REFER to Section 419-01B , Symptom Chart: Passive Anti-Theft System (PATS).

    No
    GO to A3 .
      A3 VERIFY THE BCM AND PCM PASS THE NETWORK TEST  
    • Ignition ON.
    • Using a diagnostic scan tool, perform the Network Test.
    • Did the BCM and PCM pass the Network Test?
    		Yes
    GO to A4 .

    No
    Refer to Section 418-00 .
      A4 RETRIEVE BCM AND PCM DTCs  
    • Ignition ON.
    • Using a scan tool, perform the BCM and PCM self-test.
    • Are any DTCs present?
    		Yes
    REFER to DTC Charts in this section.

    No
    GO to A5 .
      A5 CHECK BCM IGN_SW_STATE PID  
    • Using a diagnostic scan tool, view the BCM PIDs .
    • Monitor the BCM PID IGN_SW_STRT while turning the ignition switch from OFF to START.
    • Does the PID change from Off to Start when the ignition switch is turned from OFF to START?
    		Yes
    GO to A6

    No
    DIAGNOSE No power in Start. REFER to Section 211-05 .
      A6 CHECK THE IN GEAR-TRANSMISSION IS APPLYING A LOAD TO ENGINE (IN_GEAR) PID .  
    • Using a scan tool, view the PCM PIDs .
    • While observing the PCM PID IN_GEAR, place the gear selector in PARK and then NEUTRAL.
    • Does the PID read NO in both positions?
    		Yes
    GO to A7 .

    No
    Diagnose the TR Sensor. REFER to Section 307-01 .
      A7 CHECK THE ENGINE CRANKING (ENG_CRANK) PID  
    • Using a scan tool, view the PCM PIDs .
    • Make sure the transmission is in PARK or NEUTRAL.
    • While holding the key in the START position, monitor the PCM PID ENG_CRANK.
    • Does the PID change from Inactive to Active?
    		Yes
    GO to A10 .

    No
    GO to A8 .
      A8 CHECK THE START CIRCUIT FOR VOLTAGE AT THE PCM  
    • Ignition OFF.
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • For 3.5L GTDI engine, while holding the key in the START position, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-47 Ground

    • For 3.5L Ti-VCT engine, while holding the key in the START position, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-16 Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to A20 .

    No
    GO to A9 .
      A9 CHECK THE IGNITION SWITCH  
    • Carry out the Ignition Switch component test.

      Refer to Wiring Diagrams Cell 149 for component testing.

    • Did the ignition switch pass the component test?
    		Yes
    REPAIR circuit CDC35 (BU/WH) for an open.

    No
    INSTALL a new ignition switch. REFER to Section 211-05 .
      A10 CHECK THE STARTER RELAY CONTROL OPERATION  
    • Ignition OFF.
    • Disconnect: Starter Relay.
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-1 Starter Relay Socket-2

    • Make sure the transmission is in PARK or NEUTRAL.
    • While holding the key in the START position, observe the test light.
    • Does the test light illuminate when the key is in the START position?
    		Yes
    GO to A11 .

    No
    GO to A18 .
      A11 CHECK THE VOLTAGE TO THE STARTER RELAY  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-3 Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to A12 .

    No
    VERIFY BJB fuse 19 (30A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
      A12 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY  
    • With the gear selector in PARK or NEUTRAL, momentarily connect a fused jumper wire:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-3 Starter Relay Socket-5

    • Did the starter motor engage and the engine crank?
    		Yes
    INSTALL a new starter relay.

    No
    GO to A13 .
      A13 CHECK THE BATTERY GROUND CABLE  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Battery Positive Post Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to A14 .

    No
    INSTALL new battery cables. REFER to Section 414-01 .
      A14 CHECK THE STARTER MOTOR GROUND  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Battery Positive Post Starter Motor Case

    • Is the voltage greater than 11 volts?
    		Yes
    GO to A15 .

    No
    CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
      A15 CHECK THE VOLTAGE TO THE STARTER MOTOR  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197A-1 (B-Terminal) Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to A16 .

    No
    INSTALL new battery cables. REFER to Section 414-01 .
      A16 CHECK THE STARTER MOTOR FOR CORRECT OPERATION  
    • With the gear selector in PARK, momentarily connect a fused jumper wire:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197A-1 (B-Terminal) C197B-1 (S-Terminal)

    • Did the starter engage and the engine crank?
    		Yes
    GO to A17 .

    No
    INSTALL a new starter motor. REFER to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .
      A17 CHECK FOR START INPUT AT THE STARTER  
    • Connect: Starter Relay.
    • Disconnect: Starter Solenoid C197B (S-Terminal).
    • With the gear selector in PARK, while holding the key in the START position, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197B-1 (S-Terminal) Ground

    • Is the voltage greater than 11 volts?
    		Yes
    CLEAN the starter solenoid (S-Terminal) and C197B. CHECK the wiring and the starter motor for a loose or intermittent connection.

    No
    REPAIR the circuit for an open.
      A18 CHECK THE PCM START CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: ACM C240A .
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • For 3.5L GTDI engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-43 Ground
      C1381B-62 Ground

    • For 3.5L Ti-VCT engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-7 Ground
      C175B-37 Ground

    • Are the resistances to ground greater than 10,000 ohms?
    		Yes
    GO to A19 .

    No
    REPAIR the affected circuit for a short to ground.
      A19 CHECK THE PCM START CIRCUITS FOR AN OPEN  
    • For 3.5L GTDI engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-43 Starter Relay Socket-1
      C1381B-62 Starter Relay Socket-2

    • For 3.5L Ti-VCT engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-7 Starter Relay Socket-1
      C175B-37 Starter Relay Socket-2

    • Are the resistances less than 3 ohms?
    		Yes
    GO to A20 .

    No
    REPAIR the affected circuit for an open.
      A20 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the PCM connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB address this concern, INSTALL a new PCM . REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test B: The Engine Does Not Crank — With Push Button Start

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 20 , Starting System for schematic and connector information.

    Refer to Wiring Diagrams Cell 90 , Turn Signal/ Stop/ Hazard Lamps for schematic and connector information.

    Normal Operation and Fault Conditions

    When the Start/stop switch is pressed in combination with the brake pedal, the RFA , BCM and PCM receive signals requesting to crank and start the engine. The PCM and RFA module receive notification from the TR sensor that the gear selector is in PARK or NEUTRAL. The PCM requires a voltage signal from the Run/start relay to operate. The PCM then supplies voltage and ground to the starter relay coil. The energized coil causes the starter relay contacts to close which allows voltage to be supplied from the BJB to the starter solenoid coil. The starter solenoid coil is grounded at the starter motor. Energizing the starter solenoid closes the solenoid contacts allowing voltage directly from the battery to the starter motor, engaging the starter drive into the ring gear causing the engine to crank. The PCM disengages the starter motor once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the Start/stop switch is pressed indicating an engine shutdown request.

     
    PINPOINT TEST B: ENGINE DOES NOT CRANK (WITH PUSH BUTTON START)
    Test Step Result / Action to Take
      B1 PERFORM INSPECTION AND VERIFICATION  

      NOTE: Make sure battery voltage is greater than 12.2 volts prior to and during this pinpoint test.

      NOTE: If it is necessary to leave the battery charger connected during testing, do not leave it on its highest or boost setting. The highest settings can exceed 16 volts, resulting in false test results and setting of DTCs .

    • Perform Inspection and Verification procedure in this section.
    • Was an obvious cause for an observed or reported concern found?
    		Yes
    Correct the cause as necessary.

    No
    GO to B2 .
      B2 CHECK FOR NO KEY DETECTED MESSAGE IN THE MESSAGE CENTER  
    • Check the message displayed in the message center while pressing the Start/stop switch.
    • Is NO KEY DETECTED displayed in the message center?
    		Yes
    DIAGNOSE NO KEY DETECTED is displayed in the message center REFER to Section 419-01C .

    No
    GO to B3 .
      B3 CHECK THE IPC OPERATION  
    • Observe the IPC operation while pushing the Start/stop switch.
    • Do some indicators in the IPC illuminate?
    		Yes
    GO to B5 .

    No
    GO to B4 .
      B4 CHECK FOR COMMUNICATION WITH THE SCAN TOOL  
    • Using a scan tool, perform the Network Test.
    • Does the RFA module and BCM pass the Network Test?
    		Yes
    DIAGNOSE No Power in Run. REFER to Section 211-05 .

    No
    DIAGNOSE the module not responding to scan tool. REFER to Section 418-00 .
      B5 RETRIEVE DTCs  
    • Ignition ON.
    • Using a scan tool, perform the self-tests for:
      • BCM
      • PCM
      • RFA
      • TPM
    • Are any DTCs present?
    		Yes
    REFER to DTC Charts in this section.

    No
    GO to B6 .
      B6 CHECK THE CRANK FACTOR BRAKE (Crk_Fact_Brk) PID  
    • Using a scan tool, view the RFA module PIDs .
    • While observing the RFA module PID Crk_Fact_Brk, apply the brake pedal.
    • Does the PID read YES when the brake was applied?
    		Yes
    GO to B9 .

    No
    GO to B7 .
      B7 CHECK THE OPERATION OF THE STOPLAMPS  
    • While observing the stoplamps, apply the brake pedal.
    • Do the stoplamps illuminate?
    		Yes
    GO to B8 .

    No
    DIAGNOSE All The Stoplamps Are Inoperative. REFER to Section 417-01 .
      B8 CHECK THE BPP SWITCH CIRCUIT FOR VOLTAGE AT THE RFA MODULE  
    • Ignition OFF.
    • Disconnect: RFA module.
    • While pressing the brake pedal, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C2153C-18 Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B23 .

    No
    REPAIR the circuit for an open.
      B9 CHECK THE IN GEAR-TRANSMISSION IS APPLYING A LOAD TO ENGINE (IN_GEAR) PID  
    • Using a scan tool, view the PCM PIDs .
    • While observing the PCM PID IN_GEAR, place the gear selector in PARK and then NEUTRAL.
    • Does the PID read NO in both positions?
    		Yes
    GO to B10 .

    No
    DIAGNOSE the TR Sensor. REFER to Section 307-01 .
      B10 CHECK THE ENGINE CRANKING (ENG_CRANK) PID  
    • Using a scan tool, view the PCM PIDs .
    • Make sure the transmission is in PARK or NEUTRAL.
    • While pressing the Start/stop switch and the brake pedal, using a scan tool, monitor the PCM PID ENG_CRANK.
    • Does the PID change from Inactive to Active?
    		Yes
    GO to B11 .

    No
    GO to B21 .
      B11 CHECK THE STARTER RELAY CONTROL OPERATION  
    • Ignition OFF.
    • Disconnect: Starter Relay.
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-1 Starter Relay Socket-2

    • Make sure the transmission is in PARK or NEUTRAL.
    • While pressing the Start/stop switch and the brake pedal, observe the test light.
    • Does the test light illuminate when the Start/stop switch and brake pedal are pressed?
    		Yes
    GO to B12 .

    No
    GO to B19 .
      B12 CHECK THE VOLTAGE TO THE STARTER RELAY  
    • Ignition OFF.
    • Disconnect: Starter Relay.
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-3 Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B13 .

    No
    VERIFY BJB fuse 19 (30A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
      B13 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY  
    • With the gear selector in PARK or NEUTRAL, momentarily connect a fused jumper wire:


      •  

      Positive Lead Measurement / Action Negative Lead
      Starter Relay Socket-3 Starter Relay Socket-5

    • Did the starter engage and the engine crank?
    		Yes
    INSTALL a new starter relay.

    No
    GO to B14 .
      B14 CHECK THE BATTERY GROUND CABLE  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Battery Positive Post Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B15 .

    No
    INSTALL new battery cables. REFER to Section 414-01 .
      B15 CHECK THE STARTER MOTOR GROUND  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      Battery Positive Post Starter Motor Case

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B16 .

    No
    CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
      B16 CHECK THE VOLTAGE TO THE STARTER MOTOR  
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197A-1 (B-Terminal) Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B17 .

    No
    INSTALL new battery cables. REFER to Section 414-01 .
      B17 CHECK THE STARTER MOTOR FOR CORRECT OPERATION  
    • With the gear selector in PARK, momentarily connect a fused jumper wire:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197A-1 (B-Terminal) C197B-1 (S-Terminal)

    • Did the starter engage and the engine crank?
    		Yes
    GO to B18 .

    No
    INSTALL a new starter motor. REFER to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .
      B18 CHECK FOR START INPUT AT THE STARTER  
    • Connect: Starter Relay.
    • Disconnect: Starter Solenoid C197B (S-Terminal) .
    • With the gear selector in PARK, press the brake and the Start/stop switch.
    • Measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C197B-1 (S-Terminal) Ground

    • Is the voltage greater than 11 volts?
    		Yes
    CLEAN the starter solenoid (S-Terminal) and C197B. CHECK the wiring and the starter motor for a loose or intermittent connection.

    No
    REPAIR the circuit for an open.
      B19 CHECK THE PCM START CIRCUITS FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: ACM C240A .
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • For 3.5L GTDI engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-43 Ground
      C1381B-62 Ground

    • For 3.5L Ti-VCT engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-7 Ground
      C175B-37 Ground

    • Are the resistances greater than 10,000 ohms?
    		Yes
    GO to B20 .

    No
    REPAIR the affected circuit for a short to ground.
      B20 CHECK THE PCM START CIRCUITS FOR AN OPEN  
    • For 3.5L GTDI engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-43 Starter Relay Socket-1
      C1381B-62 Starter Relay Socket-2

    • For 3.5L Ti-VCT engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-7 Starter Relay Socket-1
      C175B-37 Starter Relay Socket-2

    • Are the resistances less than 3 ohms?
    		Yes
    GO to B24 .

    No
    REPAIR the affected circuit for an open.
      B21 CHECK THE START CIRCUIT FOR VOLTAGE AT THE PCM  
    • Ignition OFF.
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • Ignition ON.
    • For 3.5L GTDI engine, while pressing the Start/stop switch, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C1381B-47 Ground

    • For 3.5L Ti-VCT engine, measure:


      •  

      Positive Lead Measurement / Action Negative Lead
      C175B-16 Ground

    • Is the voltage greater than 11 volts?
    		Yes
    GO to B24 .

    No
    GO to B22 .
      B22 CHECK THE ENGINE START STOP BUTTON CIRCUIT 1 (START_STOP_1) PID  
    • Using a scan tool, view the BCM PIDs .
    • While pressing the Start/stop switch, monitor the BCM PID START_STOP_1.
    • Does the PID read correctly?
    		Yes
    REPAIR the circuit for an open.

    No
    DIAGNOSE the Start/stop switch. REFER to Section 211-05 .
      B23 CHECK FOR CORRECT RFA MODULE OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all RFA module connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the RFA module connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSBs address this concern, INSTALL a new RFA module. REFER to Section 419-10 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
      B24 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect and inspect all PCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the PCM connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB address this concern, INSTALL a new PCM . REFER to Section 303-14 .

    No
    The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test C: Unusual Starter Noise

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

     
    PINPOINT TEST C: UNUSUAL STARTER NOISE
    Test Step Result / Action to Take
      C1 CHECK THE STARTER MOUNTING  
    • Inspect the starter mounting bolts for looseness.
    • Is the starter motor mounted correctly?
    		Yes
    GO to C2 .

    No
    Tighten the starter bolts to specifications, REFER to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT . Test system for normal operation, if noise is still present GO to C2 .
      C2 CHECK FOR ENGINE NOISE  
    • Ignition OFF.
    • Connect a remote starter switch between the starter solenoid (B-terminal) C197A-1, circuit SBF01 (RD) and (S-terminal) C197B-1, circuit CDC25 (BN/GN).


    • Engage the starter and verify the noise is due to starter operation.
    • Is the noise due to the starter engagement?
    		Yes
    GO to C3 .

    No
    REFER to Section 303-00 to continue diagnosis.
      C3 STARTER MOTOR DRIVE GEAR AND RING GEAR INSPECTION  
    Yes
    Replace the starter. REFER to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .

    No
    If the starter drive gear and the flexplate ring gear are not fully meshing or the gears are milled or damaged, install a new flexplate and a new starter motor. REFER to Section 303-01A or Section 303-01B and Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .
     

    Pinpoint Test D: DTC C113A:11 OR C113A:15

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Refer to Wiring Diagrams Cell 112 , Passive Anti-Theft System for schematic and connector information.

    Normal Operation and Fault Conditions

    The wake up control circuit is used to wake up the PCM prior to engine cranking. The PCM needs to wake up prior to a crank request so that it has time to go through its own initialization. The wake up control circuit also powers the Passive Anti-Theft System (PATS) transceiver (if equipped). The wake up control circuit is controlled by the Body Control Module (BCM) and receives voltage from fuse 18 (10A).

    The BCM activates the wake up control circuit when:



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    • C113A:11
    		Wake up Control: Circuit Short To Ground Sets when the BCM detects a short to ground on the wake up control circuit.
    • C113A:15
    		Wake up Control: Circuit Short To Battery or Open Sets when the BCM detects a short to voltage or an open on the wake up control circuit.

     
    PINPOINT TEST D: DTC C113A:11 OR C113A:15

    NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

    Test Step Result / Action to Take
      D1 RETRIEVE THE BCM DTCs  
    • Ignition ON.
    • Using a diagnostic scan tool, perform the BCM self-test.
    • Is DTCs C113A:15 recorded?
    		Yes
    GO to D2 .

    No
    GO to D5 .
      D2 CHECK THE WAKE UP CONTROL CIRCUIT FOR A SHORT TO VOLTAGE  
    • Ignition OFF.
    • Disconnect: PATS Transceiver C252 (for vehicles without IA only) .
    • Disconnect: BCM C2280F .
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • Ignition ON.
    • For 3.5L GTDI , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1381B-28 CE436 (VT/OG) — Ground



    • For 3.5L Ti-VCT measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C175B-35 CE436 (VT/OG) — Ground



    • Is any voltage present?
    		Yes
    REPAIR the circuit.

    No
    GO to D3 .
      D3 CHECK THE WAKE UP CONTROL CIRCUIT FOR AN OPEN  
    • Ignition OFF.
    • For 3.5L GTDI , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1381B-28 CE436 (VT/OG) C2280F-5 CE436 (VT/OG)



    • For 3.5L Ti-VCT , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C175B-35 CE436 (VT/OG) C2280F-5 CE436 (VT/OG)



    • For vehicles without IA , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C252-1 CE436 (VT/OG) C2280F-5 CE436 (VT/OG)



    • Are the resistances less than 3 ohms?
    		Yes
    GO to D4 .

    No
    REPAIR the circuit for an open.
      D4 CHECK THE BCM AND PCM FOR CORRECT OPERATION  
    • Connect: BCM C2280F .
    • Ignition ON.
    • For 3.5L GTDI , while holding the key in the START position, measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1381B-28 CE436 (VT/OG) — Ground



    • For 3.5L Ti-VCT , while holding the key in the START position, measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C175B-35 CE436 (VT/OG) — Ground



    • For vehicles without Push Button Start, measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C252-1 CE436 (VT/OG) — Ground



    • Are the voltages greater than 11 volts?
    		Yes
    GO to D8 .

    No
    VERIFY BCM fuse 18 (10A) is OK. If OK, GO to D9 . If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
      D5 CHECK THE WAKE UP CONTROL CIRCUIT DTCs FOR A FAULT STATUS CHANGE (SHORT TO GROUND INDICATED)  
    • Using a diagnostic scan tool, clear the BCM DTCs .
    • Ignition OFF.
    • Disconnect: PATS Transceiver C252 (for vehicles without Push button start only) .
    • Disconnect: PCM C1381B (3.5L GTDI ) .
    • Disconnect: PCM C175B (3.5L Ti-VCT ) .
    • Ignition ON.
    • Using a diagnostic scan tool, perform the BCM self-test.
    • Was DTCs C113A:11 retrieved on-demand during self-test?
    		Yes
    GO to D6 .

    No
    GO to D7 .
      D6 CHECK THE WAKE UP CONTROL CIRCUIT FOR A SHORT TO GROUND  
    • Ignition OFF.
    • Disconnect: BCM C2280F .
    • For 3.5L GTDI , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1381B-28 CE436 (VT/OG) — Ground



    • For 3.5L Ti-VCT , measure the resistance between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C175B-35 CE436 (VT/OG) — Ground



    • Is the resistance greater than 10,000 ohms?
    		Yes
    GO to D9 .

    No
    REPAIR the circuit.
      D7 CHECK THE BCM FOR DTCs  
    • Using a diagnostic scan tool, clear the BCM DTCs .
    • Ignition OFF.
    • Connect: PCM C1381B (3.5L GTDI ) .
    • Connect: PCM C175B (3.5L Ti-VCT ) .
    • Ignition ON.
    • Using a diagnostic scan tool, perform the BCM self-test.
    • Was DTCs C113A:11 retrieved on-demand during self-test?
    		Yes
    GO to D8 .

    No
    For vehicles without Push button start, INSTALL a new PATS transceiver. REFER to Section 419-01A .

    For vehicles with Push button start, the system is operating correctly at this time. The concern may have been caused by loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
      D8 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect all the PCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Connect the PCM connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB addresses this concern, INSTALL a new PCM . Section 303-14

    No
    The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
      D9 CHECK FOR CORRECT BCM OPERATION  
    • Ignition OFF.
    • Disconnect all the BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Connect the BCM connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB addresses this concern, INSTALL a new BCM . REFER to Section 419-10 .

    No
    The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
     

    Pinpoint Test E: DTC B1D55:01

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Normal Operation and Fault Conditions

    An external antenna connected to the Tire Pressure Monitor Module (TPM) receives a signal from the Integrated Keyhead Transmitter (IKT) or Intelligent Access (IA) key to enable activation of the remote start function from a distance of up to 100 meters (328 feet). If the external antenna fails, the remote start operates with a reduction in the range of operation.



     DTC Fault Trigger Conditions

    DTC Description Fault Trigger Conditions
    • B1D55:01
    		Antenna #2: General Electrical Failure Sets if the vehicle is equipped with remote start but the system feedback circuit does not detect an external antenna.

     
    PINPOINT TEST E: DTC B1D55:01
    Test Step Result / Action to Take
      E1 CHECK THE EXTERNAL ANTENNA CONNECTION  
    • Check the connections at the external antenna and TPM .
    • Are the connections loose or disconnected?
    		Yes
    REPAIR as necessary.

    No
    GO to E2 .
      E2 CHECK THE EXTERNAL ANTENNA  
    • Install a new external antenna.
    • Attempt to start the vehicle using the IKT or IA key from a distance of 100 meters (328 feet) from the vehicle.
    • Does the vehicle start from this distance?
    		Yes
    Fault is corrected.

    No
    GO to E3 .
      E3 CHECK THE EXTERNAL ANTENNA CABLE  
    • Install a new external antenna cable. Clear the DTCs . Repeat the self-test.
    • Attempt to start the vehicle using the IKT or IA key from a distance of 100 meters (328 feet) from the vehicle.
    • Does the vehicle start from this distance?
    		Yes
    Fault is corrected.

    No
    INSTALL a new TPM . REFER to Section 204-04 .
     

    Pinpoint test F: The Remote Start Is Inoperative

    Diagnostic Overview

    Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

    Normal Operation and Fault Conditions

    The factory equipped remote start system enables the engine to be started from up to 100 meters (328 feet) away by pressing a sequence of buttons on the IKT or IA key. To activate the remote start system, press the lock button once to make sure the doors are locked, followed by 2 presses of the remote start button. The 3 button presses must occur within 3 seconds of each other. The IKT or IA key signal is received through an external antenna attached to the Tire Pressure Monitor Module (TPM) and communicated over the Medium Speed Controller Area Network (MS-CAN) to initiate the vehicle start.

     
    PINPOINT TEST F: THE REMOTE START IS INOPERATIVE
    Test Step Result / Action to Take
      F1 CHECK THE OPERATION OF THE IKT OR IA KEY  
    • Press all buttons on the IKT or IA key and check for the correct operation.
    • Is the remote start the only function that is inoperative?
    		Yes
    GO to F2 .

    No
    REFER to Section 501-14A to diagnose and repair the Remote Keyless Entry (RKE) system. Diagnose and repair the Remote Keyless Entry (RKE) system. REFER to Section 501-14A (without IA ) or REFER to Section 501-14B (with IA ).
      F2 CHECK THE ENGINE FOR CRANKING  
    • With the gear selector in PARK or NEUTRAL, attempt to crank the engine using the key in the ignition or pressing the start/stop switch and the brake pedal.
    • Did the engine crank?
    		Yes
    GO to F3 .

    No
    This not a remote start issue. To diagnose the no crank condition for vehicles without IA , GO to Pinpoint Test A .

    To diagnose the no crank condition for vehicles with IA , GO to Pinpoint Test B .
      F3 CHECK FOR ILLUMINATED ENGINE WARNING LAMPS  
    • With the engine running, check the instrument cluster for illuminated warning lamps.
    • Are any engine warning lamps illuminated?
    		Yes
    CARRY OUT self-test of the PCM . DIAGNOSE and REPAIR any DTCs present. REFER to PCM DTC Chart Section 303-14 .

    No
    GO to F4 .
      F4 RETRIEVE BCM AND TPM DTCs  
    • Using a diagnostic scan tool, perform the BCM self-test.
    • Using a diagnostic scan tool, perform the TPM self-test.
    • Are any DTCs present?
    		Yes
    REFER to the BCM DTC Chart or TPM DTC Chart in this section.

    No
    GO to F5 .
      F5 CONFIRM THE REMOTE START FUNCTION IS ENABLED  
    • Ignition ON.
    • Check the message center and confirm the remote start function is enabled. Refer to the Owner's Literature or Section 413-01 .
    • Is the remote start function enabled?
    		Yes
    GO to F6 .

    No
    ENABLE the remote start function.
      F6 CHECK THE BCM LAST RECEIVED RKE TRANSMITTER BUTTON PRESS (LST_RKE_xMTR) or RFA MODULE LAST RECEIVED TRANSMITTER ID BUTTON PRESS (LST_XM_B_PRS) TRANSMITTER PID  
    • Using a diagnostic scan tool, view BCM (without IA ) or RFA Module (with IA ) PIDs .
    • Press the remote start button on the IKT or IA key and note the PID status:
      • Without IA , BCM PID LST_RKE_xMTR.
      • With IA , RFA module PID LST_XM_B_Prs.
    • Does the selected PID indicate the remote start button was the last button pressed?
    		Yes
    GO to F7 .

    No
    REPLACE and PROGRAM new IKT or IA key. REFER to Section 419-01A .
      F7 CHECK THE PCM WAKE UP CIRCUIT  
    • Ignition OFF.
    • Disconnect: PCM C1381B (3.5L GTDI ) or PCM C175B (3.5L Ti-VCT ) .
    • Ignition ON.
    • For 3.5L GTDI , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C1381B-28 CE436 (VT/OG) — Ground



    • For 3.5L Ti-VCT , measure the voltage between:


      • Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C175B-35 CE436 (VT/OG) — Ground



    • Is the voltage greater than 11 volts?
    		Yes
    GO to F8 .

    No
    VERIFY BCM fuse 18 (10A) is OK. If OK, REPAIR circuit CE436 (VT/OG) for an open. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.
      F8 CHECK THE REMOTE START PRECONDITIONS FOR CORRECT OPERATION  

      NOTE: The Body Control Module (BCM) acknowledges the remote start request and that all preconditions have been met by providing 2 short flashes of the exterior lights.

    • Check the vehicle for the following:
      • Hood is closed with no DTCs present.
      • Ignition must be off
      • Vehicle must be in PARK.
      • Remote start feature is configured ON.
      • Remote start events do not exceed allowed time (2 events in a 1 hour duration).
    • Have all preconditions for remote start been met and is the remote start system still inoperative?
    		Yes
    GO to F9 .

    No
    CARRY OUT the required precondition as necessary.
      F9 CHECK FOR CORRECT PCM OPERATION  
    • Ignition OFF.
    • Disconnect all the PCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Connect the PCM connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present?
    		Yes
    CHECK OASIS for any applicable TSBs . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB addresses this concern, INSTALL a new PCM . REFER to Section 303-14 . CLEAR all DTCs in all modules.

    No
    The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
     

    Component Tests

     WARNING: Before beginning any service procedure in this section, refer to Safety Warnings in Section 100-00 . Failure to follow this instruction may result in serious personal injury.

     WARNING: Always disconnect the battery ground cable at the battery before disconnecting the starter motor battery terminal lead. If a tool is shorted at the starter motor battery terminal, the tool can quickly heat enough to cause a skin burn. Failure to follow this instruction may result in serious personal injury.

    Always make the Fluke 77-IV Digital Multimeter connections at the component terminal rather than at the wiring end connector. Making a connection at the wiring end connector could result in false readings because the meter will not pick up a high resistance between the wiring connector and the component.

    Starter Motor — Feed Circuit Test

    1. Make sure the battery is fully charged. Refer to Section 414-01 .
    1. Carry out a battery drain test. Refer to Section 414-01 .
    1. Connect a remote starter switch between starter solenoid S-Terminal and the battery positive terminal.
    1. Connect the Digital Multimeter positive lead to the battery positive post. Connect the negative lead to the starter solenoid "M" terminal.
    1. Place the gear select lever in Park or Neutral.
    1. Engage the remote starter switch. Read and record the voltage. The voltage reading should be 0.5 volt or less.
    1. If the voltage reading is 0.5 volt or less, go to the Starter Motor - Ground Circuit Test in this section.
    1. A voltage reading greater than 0.5 volt is an indication of excessive resistance in the starter connections, the positive battery cable or in the starter solenoid. Remove the cables from solenoid "B", "S", and "M" terminals. Clean the cable connections and reinstall the cables to the correct terminals. Repeat Steps 3 through 7.
    1. If the voltage reading is still greater than 0.5 volt when checked at the "M" terminal, move the Digital Multimeter negative lead to the starter solenoid B-Terminal and repeat step 6.
    1. If the voltage reading at the B-Terminal is lower than 0.5 volt, the concern is in the connections at the starter solenoid or in the solenoid contacts. Install a new starter motor. Refer to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .
    1. If the voltage reading taken at the solenoid B-Terminal is still greater than 0.5 volt after cleaning the cables and connections at the solenoid, the concern is either in the positive battery cable connection or in the positive battery cable itself.
    1. Clean the positive battery cable connections. If this does not solve the problem, install a new positive battery cable. Refer to Section 414-01 .

    Starter Motor - Ground Circuit Test

     WARNING: Before beginning any service procedure in this section, refer to Safety Warnings in Section 100-00 . Failure to follow this instruction may result in serious personal injury.

    A slow cranking condition can be caused by resistance in the ground or return portion of the cranking circuit. Check the voltage drop in the ground circuit as follows:

    1. Connect a remote starter switch between starter solenoid S-Terminal and the battery positive terminal.
    1. Connect the Digital Multimeter positive lead to the starter motor housing (the connection must be clean and free of rust or grease). Connect the negative lead to the negative battery terminal.
    1. Place the gear select lever in Park or Neutral.
    1. Engage the remote starter switch and crank the engine. Read and record the voltage reading. The reading should be 0.5 volt or less.
    1. If the voltage drop is greater than 0.5 volt, clean the negative cable connections at the battery, the body ground connections and the starter ground connection. Retest.
    1. If the voltage drop is greater than 0.5 volt, install new battery cables. Refer to Section 414-01 . If the voltage reading is less than 0.5 volt and the engine still cranks slowly, install a new starter motor. Refer to Starter Motor — 3.5L GTDI or Starter Motor — 3.5L Ti-VCT .