Pinpoint Test Ah: Neutral Flat Tow Functional Test

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Shifting the transfer case to its neutral position for neutral flat towing may allow the vehicle to be able to roll even if the transmission is in park (P). Make sure the foot brake is depressed and the vehicle is in a secure and safe position while the transfer case is being shifted to its neutral position. Failure to follow this instruction may result in serious personal injury.

WARNING: Do not disconnect the battery during neutral flat towing. Doing so will prevent the transfer case from shifting properly and may allow the vehicle to roll even if the transmission is in park (P). Failure to follow this instruction may result in serious personal injury.

NOTE: 2WD vehicles cannot be towed with any wheels on the ground as vehicle or transmission damage may occur.

NOTE: Failing to put the transfer case in its NEUTRAL position will damage vehicle components.

NOTE: 4WD vehicles can only be flat towed with all wheels on the ground by placing the transfer case in its NEUTRAL position.

AH1 CHECK NEUTRAL FLAT TOW ACTIVATION AND DEACTIVATION
- Activate neutral flat tow. Refer to Neutral Flat Tow Activation and Deactivation .
- Does the IPC indicate neutral flat tow is activated?
  - Yes : RETURN the vehicle to the customer. ADVISE the customer about the correct Neutral Flat Tow Activation and Deactivation procedure.
  - No : GO to AH2.
AH2 CHECK NEUTRAL FLAT TOW ACTIVATION WHILE MONITORING THE TCCM 4WD MODES (4WD_MODES) PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
- Monitor the 4WD_MODES PID.
- Does the PID indicate NEUTRAL?
  - Yes : REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES to diagnose IPC faults. After the repair is complete, CLEAR the DTCs. TEST the system for normal operation.
  - No : GO to AH3.
AH3 CHECK FOR TCCM DTCs
- Enter the following diagnostic mode on the scan tool: Self-Test -TCCM.
- Are any DTCs present?
  - Yes : REFER to the TCCM DTC Chart . After the repair is complete, CLEAR the DTCs. TEST the system for normal operation.
  - No : GO to AH4.
AH4 CHECK TCCM BRAKE ON/OFF (4X4_BOO) PID
- Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
- Monitor the 4X4_BOO PID while pressing the brake pedal.
- Does the PID agree with the brake pedal position?
  - Yes : GO to AH5.
  - No : REFER to EXTERIOR LIGHTING to diagnose stoplamp system faults. After the repair is complete, CLEAR the DTCs. TEST the system for normal operation.
AH5 CHECK THE TCCM IGNITION POSITION (KEY_POS_4X4) PID
- Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
- Monitor the KEY_POS_4X4 PID with the ignition in the ON position.
- Does the PID indicate Ignition On?
  - Yes : GO to AH6.
  - No : REFER to STEERING COLUMN SWITCHES for further diagnosis of the ignition switch.
AH6 CHECK THE TCCM NEUTRAL INDICATOR (NEUTRAL) PID
- Enter the following diagnostic mode on the scan tool: DataLogger - TCCM.
- Monitor the NEUTRAL PID with the gear selector in neutral position.
- Does the PID indicate TRUE?
  - Yes : For vehicles equipped with the ESOF system, GO to Pinpoint Test B to diagnose the transfer case shift motor.
    For vehicles equipped with the 2-speed torque-on-demand system, GO to Pinpoint Test P to diagnose the transfer case shift motor.
  - No : REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 6R80 for diagnosis of the TR sensor.