C230A

transfer case




C230A-NEUTRAL INDICATOR CONTROL CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
With the ignition on.

- Set Condition:
The instrument Cluster detects low voltage on the neutral indicator control circuit.





1. NEUTRAL INDICATOR CONTROL CIRCUIT DTC IS ACTIVE
1. Ignition on, engine off.
2. With the scan tool, clear DTCs.
3. Shift the Transfer Case into neutral for 30 seconds.

NOTE: To select or deselect transfer case neutral, vehicle speed must be 0 km/h (0 mph) with the ignition on, engine off, the brake pedal applied, and the transmission in neutral (automatic trans) or the clutch pedal pressed (manual trans). Press the neutral button (if equipped) on the transfer case selector switch until the neutral indicator is illuminated.

WARNING: Apply the parking brake. The vehicle may roll with the Transfer Case in neutral.

NOTE: To verify the transfer case is in neutral, shift the automatic transmission into reverse and release the brake pedal for three seconds or shift the manual transmission into gear and slowly release the clutch pedal. There should be no vehicle movement if the Transfer Case is in Neutral.

4. With the scan tool, read DTCs in the Instrument Cluster.

Does the DTC reset?

Yes

- Go To 2

No

- Go To 6

2. INSTRUMENT CLUSTER




1. Turn the ignition off to the lock position.
2. Disconnect the Instrument Cluster C3 harness connector.
3. Connect a jumper wire between the (G95) 4WD Neutral Indicator circuit and ground in the Instrument Cluster C3 harness connector.
4. Turn the ignition on.

Does the 4WD Neutral Indicator LED illuminate?

Yes

- Go To 3

No

- Replace the Instrument Cluster.
- Perform the TRANSFER CASE VERIFICATION TEST

3. (G95) 4WD NEUTRAL INDICATOR CIRCUIT SHORTED TO GROUND




1. Turn the ignition off to the lock position.
2. Disconnect the Transfer Case Selector Switch harness connector.
3. Measure the resistance between ground and the (G95) 4WD Neutral Indicator circuit at the Instrument Cluster C3 harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Repair the short to ground in the (G95) 4WD Neutral Indicator circuit.
- Perform the TRANSFER CASE VERIFICATION TEST

No

- Go To 4

4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN




1. Measure the resistance of the (G95) 4WD Neutral Indicator circuit between the Transfer Case Sector Switch harness connector and the Instrument Cluster C3 harness connector.

Is the resistance above 5.0 Ohms?

Yes

- Repair the open in the (G95) 4WD Neutral Indicator circuit.
- Perform the TRANSFER CASE VERIFICATION TEST

No

- Go To 5

5. (F21) FUSED IGNITION SWITCH OUTPUT (RUN/START) CIRCUIT OPEN




1. Measure the resistance of the (F21) Fused Ignition Switch Output (RUN/START) circuit between the Transfer Case Sector Switch harness connector and the Instrument Cluster C3 harness connector.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair the open in the (F21) Fused Ignition Switch Output (RUN-START) circuit.
- Perform the 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 the TRANSFER CASE VERIFICATION TEST

No

- Test complete.