Pinpoint Test M: The Transfer Case Jumps Out Of Gear
WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
When directed to drive the vehicle as part of this test, drive the vehicle on a hard surface in an area without traffic to prevent a crash. Failure to follow these instructions may result in personal injury.
- M1 VERIFY THE CONCERN
- Drive the vehicle and attempt to duplicate the concern.
- Is the concern an uncommanded range shift (in or out of low range)?
- M2 CHECK THE MSS POSITION MONITORING THE 4WD SWITCH STATUS (4X4_SW) PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger - TCCM .
- Drive the vehicle.
- Dynamically monitor the 4X4_SW PID while driving the vehicle in each shift position.
- Does the 4X4_SW PID always agree with the switch position?
- Yes: GO to M3.
- No: GO to PINPOINT TEST I .
- M3 CHECK TCCM DTCs
- Enter the following diagnostic mode on the scan tool: Self-Test - TCCM .
- Are any DTCs present?
- Yes: REFER to the TRANSFER CASE CONTROL MODULE (TCCM) DTC CHART .
- No: CARRY OUT the Electronic Shift-On-The-Fly (ESOF) Functional Test. GO to PINPOINT TEST O .
- M4 CHECK THE 4WD INDICATORS
- Stop the vehicle.
- Transmission in NEUTRAL.
- Depress the brake pedal.
- Observe the 4WD indication in the message center while cycling through each MSS position.
- Does the 4WD indicator(s) match the MSS ?
- M5 CHECK FOR DTCs
- Transmission in PARK.
- Enter the following diagnostic mode on the scan tool: Self-Test - TCCM .
- Are any DTCs present?
- Yes: REFER to the TRANSFER CASE CONTROL MODULE (TCCM) DTC CHART .
- No: CHECK the transfer case fluid level. REFER to TRANSFER CASE . If the fluid level is OK, CHECK for internal transfer case faults. REFER to TRANSFER CASE .