Diagnostic System Check - Vehicle

Diagnostic System Check - Vehicle

Test Description

The numbers below refer to the step numbers on the diagnostic table.
1. This step ensures that the battery and the vehicle primary power and ground systems are functioning correctly.
3. Lack of communication may be due to a particular malfunction of a serial data circuit. The link to Data Link References will provide a list of modules and the associated data network no communication diagnostic link.
8. This step ensures that all data link communication DTCs are diagnosed before system level DTCs.
9. This step ensures that all electronic control unit (ECU) internal DTCs are diagnosed before other system level DTCs.
10. This step ensures that all device voltage DTCs are diagnosed before other system level DTCs.