C1082-11

C1082-11-VACUUM PRESSURE SENSOR - CIRCUIT SHORT TO GROUND





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

- When Monitored:
Continuous

- Set Condition:
The Vacuum Sensor Signal indicates that the voltage level is below 0.25 volts for more than 50msec.





1. VERIFY THE DTC IS ACTIVE
1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Ignition on, engine not running.
3. With the scan tool, record and erase the DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read the DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test.

2. (B32) VACUUM PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND




1. Turn ignition off to the lock position.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance between ground and the (B32) Vacuum Pressure Sensor Signal circuit at the Vacuum Pressure Sensor harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Repair the (B32) Vacuum Pressure Sensor Signal circuit for a short to ground.
- Perform ABS VERIFICATION TEST ABS Verification Test.

No

- Go To 3

3. (B32) VACUUM PRESSURE SENSOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE




1. Turn ignition off to the lock position.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance of the (B32) Vacuum Pressure Sensor Signal circuit between the Vacuum Pressure Sensor harness connector and the ABS Module harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 4

No

- Repair the (B32) Vacuum Pressure Sensor Signal circuit for an open or high resistance.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

4. (B31) VACUUM PRESSURE SENSOR SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE




1. Turn ignition off to the lock position.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance of the (B31) Vacuum Pressure Sensor Supply circuit between the Vacuum Pressure Sensor harness connector and the ABS Module harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 5

No

- Repair the (B31) Vacuum Pressure Sensor Supply circuit for an open or high resistance.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

5. ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Turn the ignition off to the lock position.
2. Replace the Vacuum Pressure Sensor.
3. Perform the ABS VERIFICATION TEST. ABS Verification Test.
4. With the scan tool, read the DTCs.

Is the DTC still active?

Yes

- Replace the Anti-Lock Brake System (ABS) Module. Anti-Lock Brake System Module - Removal.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Test complete.