Test Description
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. 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 tests for a short to ground or voltage on the 5-volt reference circuit.
- 3: This step tests for an internal short to ground in the yaw rate and lateral accelerometer sensor.
- 4: This step tests for an internal short to ground in the SWPS.
DTC C0870
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Check for a short to ground or voltage on the 5-volt reference circuit of the following sensors:
Did you find and correct the condition? |
Go to Step 8 | Go to Step 3 |
| 3 |
|
Go to Step 4 | Go to Step 5 |
| 4 |
|
Go to Step 7 | Go to Step 6 |
| 5 | Replace the yaw rate and lateral acceleration sensor. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement . Did you complete the replacement? |
Go to Step 8 | - |
| 6 | Replace the SWPS. Refer to Steering Wheel Position Sensor or Steering Shaft Lower Bearing Replacement
. Did you complete the replacement? |
Go to Step 8 | - |
| 7 | Replace the electronic brake control module (EBCM). Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 8 | - |
| 8 |
|
Go to Step 2 | System OK |