Test Description
WARNING: This page is about a different variant/trim than selected.
The numbers below refer to the step numbers on the diagnostic table.
- 2: Tests for an intermittent condition.
- 3: Determines whether the failure is the result of a faulty front axle circuit or the instrument cluster.
- 4: Tests for proper signal voltage to the PCM.
- 5: Tests for proper ignition 1 voltage to the instrument cluster.
4WD Indicator Inoperative
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Transfer Case Control Schematics | ||||
| 1 | Did you perform a Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Verify the fault is present. Does the system operate normally? | - | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
- | Go to Step 4 | Go to Step 5 |
| 4 |
|
9-14 V | Go to Step 8 | Go to Step 9 |
| 5 | Test the ignition 1 voltage circuit for a proper voltage at the instrument cluster. Does the voltage measure within the specified value? |
9-14 V | Go to Step 6 | Go to Step 7 |
| 6 | Replace the instrument panel cluster. Refer to Instrument Panel Cluster (IPC) Replacement
. Did you complete the replacement? |
- | Go to Step 10 | - |
| 7 | Repair an open or high resistance in the ignition 1 voltage circuit. Refer to Circuit Testing
and Wiring Repairs
. Did you complete the repair? |
- | Go to Step 10 | - |
| 8 | Replace the PCM. Refer to Control Module References
for replacement, set-up, and programming. Did you complete the replacement? |
- | Go to Step 10 | - |
| 9 | Inspect the axle switch signal circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. If OK, replace the front axle actuator. Refer to Electric Motor Actuator Replacement
. Did you complete the replacement? |
- | Go to Step 10 | - |
| 10 | Operate the vehicle in order to determine if the symptom has been corrected. Is the symptom still present? |
- | System OK | Go to Step 2 |