C230B

C230B- NEUTRAL INDICATOR CONTROL CIRCUIT HIGH





For a complete wiring diagram refer to Diagrams/Electrical. Electrical Diagrams


- 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.







Diagnostic Test


1. NEUTRAL INDICATOR CONTROL CIRCUIT DTC IS ACTIVE

Ignition 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. Transfer Case Verification Test

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. Transfer Case Verification Test

No

- Replace the Final Drive Control Module.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Transfer Case Verification Test


5. TRANSFER CASE SELECTOR SWITCH

View repair.

Repair

- Replace the Transfer Case Selector Switch.
- Perform the TRANSFER CASE VERIFICATION TEST-VER 1. Transfer Case Verification Test


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. Transfer Case Verification Test

No

- Test complete.