C230B- NEUTRAL INDICATOR CONTROL CIRCUIT HIGH
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:
The Final Drive Control Module detects high voltage on the Neutral Indicator Control Circuit when output is on.
| Possible Causes |
| (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN |
| (G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO VOLTAGE |
| TRANSFER CASE SELECTOR SWITCH |
| FINAL DRIVE CONTROL MODULE (FDCM) |
Diagnostic Test
1. NEUTRAL INDICATOR CONTROL CIRCUIT DTC IS ACTIVEIgnition on, engine not running.
With the scan tool, read DTCs in the FDCM.
Is the status Active for this DTC?
Yes
- Go to 2
No
- Go to 6
2. (G95) 4WD NEUTRAL INDICATOR CIRCUIT VOLTAGE
Turn the ignition off to the lock position
Disconnect the Final Drive Control Module C2 harness connector.
Ignition on, engine not running.
Measure the voltage of the (G95) 4WD Neutral Indicator circuit.
Is there any voltage present?
Yes
- Go to 3
No
- Go to 4
3. (G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORT TO VOLTAGE
Turn the ignition off to the lock position
Disconnect the Transfer Case Selector Switch harness connector.
Ignition on, engine not running.
Measure the voltage of the (G95) 4WD Neutral Indicator circuit.
Is there any voltage present?
Yes
- Repair the (G95) 4WD Neutral Indicator circuit for a short to voltage.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
No
- Go to 5
4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN
Turn the ignition off to the lock position
Disconnect the Transfer Case Selector Switch connector.
Measure the resistance of the (G95) 4WD Neutral Indicator Control circuit between the Transfer Case Motor harness connector and the Final Drive Control Module C2 harness connector.
Is the resistance above 5.0 ohms?
Yes
- Repair the open (G95) 4WD Neutral Indicator circuit.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
No
- Replace the Final Drive Control Module in accordance with the Service information.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
5. TRANSFER CASE SELECTOR SWITCH
View repair.
Repair
- Replace the Transfer Case Selector Switch in accordance with the Service information.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
6. 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 1 (Refer to 21 - TRANSMISSION/TRANSAXLE/TRANSFER CASE - STANDARD PROCEDURE).
No
- Test complete.