P0573

Diagnostic Chart:

Wiring Diagram:

The brake switch is normally closed supplying 12 volts to the PCM at terminal J1C14 when the ignition is On and brake Off.

DTC PARAMETERS

DTC P0573 will set if voltage at circuit 86B is always 12 volts when:

^ Vehicle has cycled two times from 0-55 km/h (0-35 mph).

TEST DESCRIPTION

Numbered steps below refer to steps on trouble chart.

1. When disconnecting the brake switch connector, the PCM should see zero volts at terminal J1C14. Zero volts should be indicated as brake switch On.

2. If the Scan tool indication is Off when the brake switch was disconnected, it indicates a short to voltage on circuit 86B to PCM.

DIAGNOSTIC AIDS

When attempting to diagnose an intermittent problem use the Scan tool to review malfunction history diagnostic information. The supplemental data can be used to duplicate a problem.

Check the tightness of the female terminal grip with a spare male terminal.

This code could set by a customer who comes to a complete stop without using the foot brake.

^ A blown 5 amp cruise fuse will cause a DTC P0573 to set.