Test Description
The numbers below refer to step numbers on the diagnostic table.
- 5: This step tests the UART SEC circuit of the EBCM for an open, high resistance, short to ground or short to voltage.
- 6: This step tests the UART SEC circuit of the EBCM for an open or high resistance.
DTC 72
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: ABS Schematics Connector End View Reference: ABS Connector End Views |
||||
| 1 | Did you perform A Diagnostic System Check - ABS? | - | Go to Step 2 | Go to Diagnostic System Check - ABS |
| 2 |
|
- | Go to Step 3 | Go to Diagnostic Aids |
| 3 | Use the scan tool in order to communicate with the body control module (BCM). Does the scan tool communicate with the BCM? |
- | Go to Step 4 | Go to Diagnostic Starting Point - Body Control System in Body Control System |
| 4 | Use the scan tool in order to read the DTCs for the IPC module and Radio. Are any serial data DTCs set? |
- | Go to Step 5 | Go to Step 6 |
| 5 | Test the electronic brake control module (EBCM) UART circuit for an open, high resistance, short to ground or short to voltage. Refer to Circuit Testing
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 7 |
| 6 | Test the EBCM UART circuit for an open or high resistance. 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 9 | Go to Step 8 |
| 7 | Replace the BCM. Refer to Body Control Module Replacement
in Body Control Systems. Did you complete the replacement? |
- | Go to Step 9 | - |
| 8 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement . Did you complete the replacement? |
- | Go to Step 9 | - |
| 9 |
|
- | Go to Step 2 | System OK |