C143F

C143F-STABILIZER SELECT SWITCH CIRCUIT HIGH





For a complete wiring diagram Refer to Diagrams/Electrical.


- When Monitored:
Ignition on.

- Set Condition:
During switch operation, the FDCM senses the Stabilizer Bar Switch Sense circuit is above 4.0 volts.








1. DTC ACTIVE
CAUTION: Before removing the FDCM harness connector, clean the connector and locking cam area of dirt and debris. Failure to do so can result in the connector being jammed or damage to the locking cams on the harness connector or module. Do not force the assist arm when releasing or installing the harness connector.

Turn the ignition on, engine not running
With the scan tool, read FDCM DTC(s).
Is the DTC active at this time?

Yes


- Go To2


No


- Go To6



2. DISCONNECTING STABILIZER BAR SWITCH OPERATION
Turn the ignition off.
Disconnect the Disconnecting Stabilizer Bar Switch harness connector.
Remove the Disconnecting Stabilizer Bar Switch.
Measure the resistance on the Disconnecting Stabilizer Bar Switch between the Switch Supply terminal and the Stabilizer Bar Switch Sense terminal.
The resistance must read as follows for each position of the switch.
- Off Road: 33 ohms +/- 5%

- On Road: 510 ohms +/- 5%

- Switch Not Applied: 2.2k ohms +/- 5%

Does the ohmmeter read correctly for each position of the Disconnecting Stabilizer Bar Switch

Yes


- Go To5


No


- Replace the Disconnecting Stabilizer Bar Switch.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test



3. (T531) STABILIZER BAR SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE




Disconnect the FDCM harness connector.
Turn the ignition on.
Measure the voltage of the (T531) Stabilizer Bar Switch Sense circuit in the Disconnecting Stabilizer Bar Switch harness connector.
Does the voltmeter indicate voltage present?

Yes


- Repair the short to voltage in the (T531) Stabilizer Bar Switch Sense circuit.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test


No


- Go To4



4. (T536) SWITCH SUPPLY CIRCUIT SHORTED TO (T531) STABILIZER BAR SWITCH SENSE CIRCUIT




Measure the resistance between (T536) Switch Supply circuit and the (T531) Stabilizer Bar Switch Sense circuit in the Disconnecting Stabilizer Bar Switch harness connector.
Is the resistance below 5.0 ohms?

Yes


- Repair the short between (T536) Switch Supply circuit and the (T531) Stabilizer Bar Switch Sense circuit.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test


No


- Go To5



5. (T531) STABILIZER BAR SWITCH SENSE CIRCUIT OPEN




Measure the resistance of the (T531) Stabilizer Bar Switch Sense circuit between the Disconnecting Stabilizer Bar Switch and the FDCM harness connectors.
Is the resistance below 5.0 ohms?

Yes


- Replace the FDCM.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test


No


- Repair the open in the (T531) Stabilizer Bar Switch Sense circuit.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test



6. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle test the wiring harness and connectors while checking for shorted and open circuits.
Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.
While monitoring the Stabilizer Bar State on the scan tool, move the switch to each position. The scan tool display must match the position on the actual switch.
Were there any problems found?

Yes


- Repair as necessary.
- Perform FDCM VERIFICATION TEST. FDCM Verification Test


No


- Test Complete.