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Home >> Lincoln >> 2013 >> Navigator L, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Four Wheel Drive (4WD) Systems) >> Diagnosis And Testing >> Four Wheel Drive (4WD) Systems - 1-Speed Torque-On-Demand >> Pinpoint Tests >> Pinpoint Test K: The Vehicle Binds in Turns/Resists Turning/Pulsates/Shudders in a Straight Line >> Pinpoint Test K: The Vehicle Binds In Turns/Resists Turning/Pulsates/Shudders In A Straight Line

Pinpoint Test K: The Vehicle Binds In Turns/Resists Turning/Pulsates/Shudders In A Straight Line

WARNING: This page is about a different variant/trim than selected.
NOTE: 4X4 is not intended for driving on hard/dry surfaces; using 4X4 mode while driving on these surfaces may produce noises like intermittent clunking, but will not damage driveline components.
  1. K1 VERIFY THE CONCERN 
    • Test drive the vehicle on a straight stretch of road in 4X4 AUTO mode.
    • Drive the vehicle through turns and parking lot maneuvers.
    • Does the vehicle bind, pulsate or shudder? 
      1. Yes  : If the problem occurs in 4X4 AUTO mode, GO to K2; in 4X4 mode, binding is a normal condition.
      2. No  : GO to PINPOINT TEST G .
  2. K2 CHECK THE 4X4 MODE INDICATOR 
    • Review the test drive notes.
    • Did the 4X4 mode indicator or the powertrain malfunction indicator illuminate? 
      1. Yes  : If the powertrain malfunction indicator is illuminated, GO to  K4. If the 4X4 mode indicator stays illuminated, GO to K3.
      2. No  : GO to  K5.
  3. K3 VERIFY THE FAULT 
    • Review the test drive notes.
    • Was 4X4 mode selected when the indicators were illuminated in the Instrument Cluster (IC) message center? 
      1. Yes  : The system is functioning correctly.
      2. No  : The fault may have been caused by an intermittent, uncommanded or autolock shift. TEST the system for normal operation. GO to PINPOINT TEST G .
  4. K4 CHECK FOR DTCs 
  5. K5 VERIFY THE CONCERN 
    • Disconnect: Transfer Case C350.
    • Test drive the vehicle on a straight stretch of road and in turns, and shift the transfer case through each mode. Record any fault conditions.
    • Is the concern present? 
      1. Yes  : INSPECT the driveline components for damage or wear. REFER to INSPECTION AND VERIFICATION . TEST the system for normal operation.
      2. No  : GO to K6.
  6. K6 CHECK THE 4WD CLUTCH PWM STATUS (4WD_CLTCH_OUT) PID 
    • Ignition OFF.
    • Connect: Transfer Case C350.
    • Ignition ON.
    • Clear the DTCs.
    • Select 4X4 mode.
    • Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
    • Monitor the 4WD_CLTCH_OUT PID at closed throttle, Key ON Engine OFF (KOEO).
    • Is the PID at least 12%? 
      1. Yes  : GO to K7.
      2. No  : CHECK the transfer case. REFER to TRANSFER CASE . TEST the system for normal operation.
  7. K7 CHECK THE ABS MODULE WHEEL SPEED SENSOR PIDs 
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • While driving the vehicle at 30 km/h (18 mph), monitor the following wheel speed sensor PIDs:
      • Left Front Wheel Speed Sensor (LF_WSPD)
      • Left Rear Wheel Speed Sensor (LR_WSPD)
      • Right Front Wheel Speed Sensor (RF_WSPD)
      • Right Rear Wheel Speed Sensor (RR_WSPD)
    • Compare the speedometer reading to the wheel speed sensor PIDs.
    • Do the wheel speed sensor PIDs and speedometer speeds match within 1.5 km/h (1 mph)? 
      1. Yes  : GO to K8.
      2. No  : VERIFY that the 4 road wheels are the same size and have similar tread depth. CHECK the ABS for faults. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . TEST the system for normal operation.
  8. K8 CHECK THE ABSOLUTE THROTTLE POSITION (TP_TCCM) PID 
    • Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
      • NOTE: The TP_TCCM PID is Accelerator Pedal Position (APP) as communicated by the PCM via High Speed Controller Area Network (HS-CAN).
    • Slowly move throttle from closed throttle to Wide Open Throttle (WOT) and observe the TP_TCCM PID.
    • Does the TP_TCCM PID value vary between 0% at closed throttle and 100% at WOT? 
      1. Yes  : GO to K9.
      2. No  : CHECK the throttle position sensor and/or PCM for faults. REFER to the INTRODUCTION - GASOLINE MODELS and ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) . CHECK the HS-CAN, REFER to MODULE COMMUNICATIONS NETWORK . TEST the system for normal operation.
  9. K9 CHECK THE TRANSFER CASE FRONT DRIVESHAFT OUTPUT 
    • With the vehicle in NEUTRAL, position it on a hoist. Refer to JACKING & LIFTING .
    • Rotate the front driveshaft by hand.
    • Does the front driveshaft rotate freely (does it require less than 45 Nm [33 lb-ft] to rotate)? 
      1. Yes  : GO to K10.
      2. No  : CHECK the transfer case. REFER to TRANSFER CASE . TEST the system for normal operation.
  10. K10 CHECK FOR CORRECT TCCM OPERATION 
    • Ignition OFF.
    • Disconnect all TCCM connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all TCCM connectors and make sure they are seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
      1. Yes  : INSTALL a new TCCM. REFER to 4X4 CONTROL MODULE . TEST the system for normal operation.
      2. No  : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of the connector or pin issue.
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