C1464

C1464-FRONT AXLE DISCONNECT CONTROL CIRCUIT LOW





For a complete wiring diagram refer to Diagrams/Electrical. Electrical Diagrams


- When Monitored:

The ignition on, with the T-Case Switch in a 4W/LO position.

- Set Condition:

The TIPM detects the Front Axle Lock Control circuit is shorted low.






Diagnostic Test


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.

Ignition on, engine not running.

With the scan tool, read the TIPM DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To6



2. (G304) FRONT AXLE LOCK CONTROL CIRCUIT

Turn the ignition off to the lock position.

Disconnect the FAD harness connector.

Ignition on, engine not running.

With the scan tool, actuate the Front Axle Lock Control in the TIPM.

Using a 12-volt test light connected to 12-volts, check the (G304) Front Axle Lock Control circuit in the FAD harness connector.

Does the test light illuminate brightly?

Yes

- Go To 5

No

- Go To 3



3. (G304) FRONT AXLE LOCK CONTROL CIRCUIT SHORTED TO GROUND





Turn the ignition off to the lock position.

Disconnect the TIPM C2 harness connector.

Measure the resistance between ground and the (G304) Front Axle Lock Control circuit.

Is the resistance below 5.0 ohms?

Yes

- Repair the (G304) Front Axle Lock Control circuit for a short to ground.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Go To 4



4. TOTALLY INTEGRATED POWER MODULE (TIPM)

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 the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests



5. FRONT AXLE DISCONNECT (FAD) MODULE

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 the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Replace the Front Axle Disconnect (FAD) Module.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests



6. INTERMITTENT WIRING AND CONNECTORS

The conditions necessary to set this DTC are not present at this time.

Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.

Wiggle test the wiring harness and connectors while checking for shorted and open circuits.

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 the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Test Complete.