Description

The "System Pre-Check" is used to diagnose a vehicle for relatively simple diagnostic repairs, such as loose connectors and blow fuses. However, the System Pre-Check is also used to prepare the vehicle for further diagnostics, including warning lamp trouble code diagnosis.
The System Pre-Check procedure must be performed first. Failure to do so may result in incorrect system diagnosis and replacement of good components.

CONDITION ACTION TO TAKE

Yellow REAR ABS light OFF and does not self check Test A [1][2]A

Red brake light OFF and does not self check Test B [1][2]B

Yellow REAR ABS light self check OK, but light automatically
begins flashing Test C [1][2]C

Yellow REAR ABS light self check OK, but no flashout code
when diagnostics is started Test D [1][2]D

Red brake light ON when key in run position Test E [1][2]E