Thoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS , CONNECTOR REPAIRS and WIRING REPAIRS in Wiring Systems.
Test Description
The numbers below refer to the step numbers on the diagnostic table
- 4. This step tests for voltage supplied to the EBCM from the PCM.
- 5. This step verifies the EBCM is creating a requested torque signal with a valid Hz frequency.
- 6. This step verifies the EBCM is creating a requested torque signal with a valid duty cycle.
- 7. The EBCM may be damaged if the requested torque signal circuit is shorted to voltage.
Scheme 49
Scheme 50
| IMPORTANT | The following steps must be completed before using the symptom tables. |
- Perform the ABS Diagnostic System Check before using the symptom tables in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.
- Review the system description and operation in order to familiarize yourself with the system functions. Refer to «DESCRIPTION AND OPERATION»(ref-188497-S04272518692005090300000) .