C1562-92

C1562-92-RIDE HEIGHT AIR PUMP CONTROL - PERFORMANCE OR INCORRECT OPERATION

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

- When Monitored:
Ignition on. Battery voltage between 9 and 16 volts.

- Set Condition:
When the Air Suspension Control Module (ASCM) detects the Air Compressor Relay has been energized for a time exceeding five minutes within the last ten minutes.





1. DTC IS ACTIVE
1. Turn the ignition on, engine running.
2. Wait ten minutes.
3. With the scan tool, record and erase the DTCs.
4. With the scan tool, read the DTCs in the ASCM.

Is the status Active for this DTC?

Yes

- Go To 2

No

- Go To 3

2. AIR SUSPENSION RELAY
1. Turn the ignition off to the lock position.
2. Install a known good relay.
3. Ignition on, engine not running.
4. With the scan tool, erase the DTCs.
5. With the scan tool, read the DTCs.

Is the status still Active for this DTC?

Yes

- Replace the Air Suspension Control Module (ASCM). Air Suspension Control Module - Removal.
- Perform the ASCM VERIFICATION TEST. ASCM Verification Test.

No

- Install a new Air Suspension Relay.
- Perform the ASCM VERIFICATION TEST. ASCM Verification Test.

3. INTERMITTENT WIRING AND CONNECTORS
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
3. 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 ELSD VERIFICATION TEST. ELSD Verification Test.

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time.