C140E

C140E-TRANSFER CASE MOTOR BLOCKED

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.

- Set Condition:
The Final Drive Control Module is unable to engage the requested range.





Diagnostic Test

1. DTC IS ACTIVE
Ignition on, engine not running.
With the scan tool, read DTCs in the Final Drive Control Module.
Is the status Active for this DTC?

Yes

- Go to 2

No

- Go to 4

2. TRANSFER CASE INTERNAL CONDITION
Turn the ignition off to the lock position
Inspect the Transfer Case to determine if there are any mechanical conditions that are preventing the Shift Motor from engaging the requested range.
Are any mechanical conditions preventing the Shift Motor from engaging the requested range?

Yes

- Repair or replace the Transfer Case.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1Transfer Case Verification Test.

No

- Go to 3

3. TRANSFER CASE MOTOR
Turn the ignition off to the lock position
Using the wiring diagram/schematic as a guide, inspect all wiring and connectors that pertain to this circuit.
If any problems are found, repair as necessary and retest.
If no other problems are found, replace the Transfer Case Motor.
Ignition on, engine not running.
Cycle the Transfer Case Selector Switch to each position several times during a test drive.
With the scan tool, read DTCs in the Final Drive Control Module.
Is the DTC status Active?

Yes

- Replace the Final Drive Control Module.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1Transfer Case Verification Test.

No

- Test complete.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1Transfer Case Verification Test.

4. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?

Yes

- Repair as necessary.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1Transfer Case Verification Test.

No

- Test complete.