C146B-AWD SWITCH STUCK
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.
- Set Condition:
Valid voltage for Transfer Case Selector switch active present for a calibratable time.
| Possible Causes |
| TRANSFER CASE SELECTOR SWITCH |
| INSTRUMENT CLUSTER (CCN) |
Diagnostic Test
1. C146B DTC IS ACTIVENOTE: If any other DTCs are present they must be repaired before continuing.
Turn the ignition off to the lock position
With the scan tool, read DTCs in the CCN.
Is the status Active for this DTC?
Yes
- Go to 2
No
- Go to 3
2. TRANSFER CASE SELECTOR SWITCH
Turn the ignition off to the lock position
Disconnect the Transfer Case Selector Switch.
Ignition on, engine not running.
With the scan tool, read the Transfer Case Selector Switch Voltage in the CCN.
The switch voltage should be approximately 0.0 volts.
Turn the ignition off to the lock position
Connect a jumper wire between the (K77) Transfer Case Position Sensor Input circuit and the (Z940) Ground circuit in the Transfer Case Selector Switch connector.
Ignition on, engine not running.
With the scan tool, read the Transfer Case Selector Switch Voltage in the CCN.
The switch voltage should be approximately 5-volts.
Does the voltage display as described?
Yes
- Replace the Transfer Case Selector Switch.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Replace the CCN in accordance with the Service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
3. 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 BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Test complete.