Reading and Clearing Diagnostic Trouble Codes

Test SPC1 - SPC2:

Test SPC2:

Test SPC3:

NOTE: This procedure must be performed first. Failure to do so may result in an incorrect diagnosis, wasted time and unnecessary replacement of good components. The System Pre-Check is used to screen the vehicle for relatively simple diagnostic repairs such as loose connectors, blown fuses, etc. However, the System Pre-Check is also used to prepare the vehicle for further diagnostics. In addition, the yellow ABS warning indicator concerns are addressed in this check.