Test Description
WARNING: This page is about a different car, the 2007 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 3: Tests the ability of the EBCM to control the pump motor. If the test lamp illuminates, the pump motor circuit within the EBCM is good.
DTC C0820
| 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 |
|
Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 |
|
Go to Step 5 | Go to Step 4 |
| 4 | Test both ground circuits of the EBCM including the EBCM ground for a high resistance or an open. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 9 | Go to Step 6 |
| 5 | Inspect for poor connections at the pump motor harness pigtail connector of the BPMV. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 9 | Go to Step 7 |
| 6 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 9 | Go to Step 8 |
| 7 | Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Did you complete the repair? |
Go to Step 9 | - |
| 8 | Replace the EBCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the repair? |
Go to Step 9 | - |
| 9 |
|
Go to Step 2 | System OK |