For 1990-2009 cars only
Circuit Description
The powertrain control module (PCM) sends a state of health message to the EBCM within 5.5 seconds after the modules are powered up. This message is sent via serial data communications.
DTC Descriptors
This diagnostic procedure supports the following DTC:
| • | DTC C0290 Class 2 Data Link Malfunction |
| • | DTC C0292 Lost Communication With Engine Control System |
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The EBCM fails to receive serial data from the PCM.
Action Taken When the DTC Sets
If equipped, the following actions occur:
| • | The EBCM disables the TCS. |
| • | The traction off indicator turns ON. |
Conditions for Clearing the DTC
The conditions for setting the DTC are no longer present and you use the scan tool Clear DTCs function.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Scan Tool Does Not Communicate with Class 2 Device in Computer/Integrating Systems | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
