C230A

C230A- NEUTRAL INDICATOR CONTROL CIRCUIT LOW





For a complete wiring diagram Refer to Diagrams/Electrical Electrical Diagrams


- When Monitored:

With the ignition on.

- Set Condition:

Instrument Cluster detects low voltage on the Neutral Indicator Control circuit.







Diagnostic Test


1. NEUTRAL INDICATOR CONTROL CIRCUIT DTC IS ACTIVE

Ignition on, engine not running.

With the scan tool, clear DTCs.

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 (auto trans) or the clutch pedal pressed (man 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 that 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.

With the scan tool, read DTCs.

Does the DTC reset?

Yes

- Go to 2

No

- Go to 6
-


2. INSTRUMENT CLUSTER





Turn the ignition off to the lock position.

Disconnect the Instrument Cluster C3 connector.

Connect a jumper wire between the (G95) 4WD Neutral Indicator circuit and ground in the Instrument Cluster C3 harness connector.

Turn the ignition on.

Does the 4WD Neutral Indicator LED illuminate?

Yes

- Go to 3

No

- Replace the Instrument Cluster.
- Perform the BODY VERIFICATION TEST-VER 1. Body Verification Test


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





Turn the ignition off to the lock position.

Disconnect the Transfer Case Selector Switch harness connector.

Measure the resistance between ground and the (G95) 4WD Neutral Indicator circuit.

Is the resistance below 5.0 ohms?

Yes

- Repair the (G95) 4WD Neutral Indicator circuit for a short to ground.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Go to 4


4. (G95) 4WD NEUTRAL INDICATOR CIRCUIT OPEN





Measure the resistance of the (G95) 4WD Neutral Indicator circuit between the 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 (G95) 4WD Neutral Indicator circuit for an open.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests

No

- Go to 5


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





Measure the resistance of the (F21) Fused Ignition 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-VER 1. Verification Tests

No

- Repair the (F21) Fused Ignition Output (RUN/START) circuit for an open.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Verification Tests


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. Verification Tests

No

- Test complete.