C230B

C230B- NEUTRAL INDICATOR CONTROL CIRCUIT HIGH





For a complete wiring diagram, refer to the Wiring Information

- When Monitored:
With the ignition on and no system undervoltage or overvoltage condition present.

- Set Condition:
The Final Drive Control Module (FDCM) detects high voltage on the Neutral Indicator Control Circuit when output is on.





1. NEUTRAL INDICATOR CONTROL CIRCUIT DTC IS ACTIVE
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 6

2. (G95) 4WD NEUTRAL INDICATOR CIRCUIT VOLTAGE




1. Turn the ignition off to the lock position
2. Disconnect the FDCM C2 harness connector.
3. Ignition on, engine not running.
4. 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




1. Turn the ignition off to the lock position
2. Disconnect the Transfer Case Selector Switch harness connector.
3. Ignition on, engine not running.
4. 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 TRANSFER CASE VERIFICATION TEST .

No

- Go To 5

4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN




1. Turn the ignition off to the lock position
2. Disconnect the Transfer Case Selector Switch harness connector.
3. 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 TRANSFER CASE VERIFICATION TEST .

No

- Replace the Final Drive Control Module (FDCM).
- Perform TRANSFER CASE VERIFICATION TEST .

5. TRANSFER CASE SELECTOR SWITCH

View repair.

Repair

- Replace the Transfer Case Selector Switch.
- Perform TRANSFER CASE VERIFICATION TEST .

6. INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
3. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
4. 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 TRANSFER CASE VERIFICATION TEST .

No

- Test complete.