Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2: This step determines if the module can command the indicators ON.
- 3: This step determines if the indicator or wiring is at fault.
- 4: This step tests the lamp feed circuit for an open or high resistance.
- 5: This step tests the LED dimming circuit for an open or short to ground.
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Transfer Case Control Schematics Connector End View Reference: Component Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
IMPORTANT:
Do not damage a connector or circuit when back probing.
|
Go to Step 4 | Go to Step 5 |
| 4 | Test the effected indicator control circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
. Was the condition found and corrected? |
Go to Step 8 | Go to Step 7 |
| 5 | Test the LED dimming circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Was the condition found and corrected? |
Go to Step 8 | Go to Step 6 |
| 6 | Replace the mode switch. Refer to Transfer Case Shift Control Switch Replacement . Is the repair complete? |
Go to Step 8 | - |
| 7 | Replace the transfer case shift control module. Refer to Control Module References
for replacement, setup and programming. Is the repair complete? |
Go to Step 8 | - |
| 8 |
|
Go to Step 2 | System OK |