C146F

C146F-TRANSFER CASE MOTOR UNABLE TO REACH 2WD





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
The ignition on. T-Case Switch in 2WD position.

- Set Condition:
The Totally Integrated Power Module (TIPM) detects that the T-Case will not switch to 2WD.





1. ACTIVE DTC

CAUTION: Before removing the TIPM harness connectors, clean the connector and locking cam area of dirt and debris. Failure to do so can result in the connector being jammed or damage to the locking cams on the harness connector or module. Do not force the assist arm when releasing or installing the harness connector.

1. Ignition on, engine not running.
2. With the scan tool, read the TIPM DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 5

2. TRANSFER CASE MOTOR
1. With the scan tool, monitor the T-Case motor in the next step.
2. Shift the T-Case switch from 2WD to 4WD several times.

Does the T-Case motor shift correctly?

Yes

- Go To 4

No

- Go To 3

3. TRANSFER CASE SWITCH
1. Turn the ignition off to the lock position.
2. Disconnect the T-Case Switch harness connector.
3. Ignition on, engine not running.
4. With the scan tool, actuate the T-Case motor.

Does the T-Case motor shift correctly?

Yes

- Replace the Transfer Case Switch.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

No

- Replace the Transfer Case Motor.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

4. TOTALLY INTEGRATED POWER MODULE (TIPM)
1. Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.

Were any problems found?

Yes

- Repair as necessary.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

5. INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.

Were there any problems found?

Yes

- Repair as necessary.
- Perform TRANSFER CASE VERIFICATION TEST Transfer Case Verification Test.

No

- Test Complete.