Test Description
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 2: Tests if the VES malfunction is current or intermittent.
- 3: Tests if the VES actuator resistance is in the specified range.
- 13: Perform the programing procedure after EBCM replacement.
DTC C0450
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Steering Controls Schematics Connector End View Reference: Steering Controls Connector End Views |
||||
| 1 | Did you perform the Variable Effort Steering Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Variable Effort Steering |
| 2 |
|
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
1.6-3.1 Ω | Go to Step 6 | Go to Step 10 |
| 4 | Test the VES actuator and actuator harness for a short to ground. Refer to Testing for Short to Ground
and to Wiring Repairs
in Wiring Systems. Was a short to ground located? |
- | Go to Step 5 | Go to Step 6 |
| 5 | Visually inspect the actuator harness for any cut, chaffed or damaged wires. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 12 |
| 6 | Test the high effort control circuit of the VES actuator for a short to ground. Refer to Testing for Short to Ground
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 7 |
| 7 | Test the high effort control circuit for an open or short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 8 |
| 8 | Test the low effort control circuit for a short to ground. Refer to Testing for Short to Ground
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 9 |
| 9 | Test the low effort control circuit for an open or short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 10 | Inspect for poor connections at the harness connector of the VES actuator. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 12 |
| 11 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 12 | Replace the VES actuator. Refer to Power Steering Gear Replacement
in Power Steering System. Did you complete the repair? |
- | Go to Step 14 | - |
| 13 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement
in Anti-lock Brake System. Did you complete the repair? |
- | Go to Step 14 | - |
| 14 |
|
- | Go to Step 2 | System OK |