Test Description
WARNING: This page is about a different car, the 2007 Cadillac CTS. 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: Use the scan tool in order to inspect the voltage to the EBCM.
- 3: Use the scan tool in order to inspect the voltage to the body control module (BCM). A high voltage value in multiple modules indicates a concern in the charging system.
- 4: This step verifies that the condition is still present.
DTC C0900
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Antilock Brake System Schematics | ||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
16.3 V | Go to Step 3 | Go to Diagnostic Aids In This Test |
| 3 | With a scan tool, observe the Battery Volts parameter in body control module (BCM) data list. Does the scan tool indicate the voltage is greater than the specified value? |
16.3 V | Go to Diagnostic System Check - Vehicle | Go to Step 4 |
| 4 |
|
- | Go to Step 5 | Go to Diagnostic Aids In This Test |
| 5 | 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 6 | - |
| 6 |
|
- | Go to Step 2 | System OK |