Test Description
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. 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: This step calibrates the BPP sensor.
- 3: This step checks to see if the DTC C0278 resets.
- 4: This step checks for poor connections at the BPP sensor harness connector.
DTC C0278
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Power Steering System Schematics Connector End Views Reference: Power Steering System Connector End Views |
||||
| 1 | Did you perform the electro-hydraulic power steering (EHPS) Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Power Steering System |
| 2 |
IMPORTANT:
Ensure that the fork of the brake pedal position (BPP) sensor is properly aligned on the pin attached to the brake pedal.
IMPORTANT:
The CANdi module must be attached to the scan tool.
|
- | Go to Step 3 | - |
| 3 |
|
- | Go to Step 4 | Go to Step 6 |
| 4 | Inspect for poor connections at the harness connector of the BPP sensor. 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 6 | Go to Step 5 |
| 5 |
IMPORTANT:
Always perform the calibration procedure for the BPP sensor. Refer to Brake Pedal Position Sensor Calibration Description and Operation . Replace the BPP sensor. Refer to Brake Pedal Position Sensor Replacement .Did you complete the replacement? |
- | Go to Step 6 | - |
| 6 |
|
- | Go to Step 2 | System OK |