Test Description
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 2: Tests for voltage at the coil side of the exhaust solenoid. The ELC fuse supplies power to the coil side of the exhaust solenoid.
- 3: Verifies that the height sensor is providing ground to the exhaust solenoid.
- 4: Tests if ground is constantly being applied to the exhaust solenoid.
- 9: Verifies that the sensor is self tested after replacement.
DTC 031
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Automatic Level Control Suspension Schematics | |||
| 1 | Did you perform the Automatic Level Control Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Automatic Level Control (With Inflator) |
| 2 |
|
Go to Step 3 | Go to Step 7 |
| 3 | Connect a test lamp between the control circuit of the exhaust solenoid and the battery positive voltage circuit of the exhaust solenoid. Does the test lamp illuminate? |
Go to Step 4 | Go to Step 5 |
| 4 | Test the control circuit of the exhaust solenoid for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 6 |
| 5 | Inspect for poor connections at the exhaust solenoid. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 8 |
| 6 | Inspect for poor connections at the harness connector of the height sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 10 | Go to Step 9 |
| 7 | Repair the battery positive voltage circuit of the exhaust solenoid. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 10 | - |
| 8 | Replace the exhaust solenoid. Refer to Air Compressor Replacement . Did you complete the replacement? |
Go to Step 10 | - |
| 9 |
IMPORTANT:
System untested code will continue to flash until self test has been completed after sensor replacement. Replace the height sensor. Refer to Automatic Level Control Sensor Replacement .Did you complete the replacement? |
Go to Step 10 | - |
| 10 | Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset? |
Go to Step 2 | System OK |