GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection

Description

Wiper Relay

Vehicle Control Systems/Computer/Integrating Systems/Special Functions/Body Control Module/Miscellaneous Test

This output control commands the WPR PCB relay On and Off. The wiper motor will operate at Low speed when the wiper relay is On.

Wiper High Speed Relay

Vehicle Control Systems/Computer/Integrating Systems/Special Functions/Body Control Module/Miscellaneous Test

This output control commands the WPR Hi PCB relay On or Off. The wiper motor will operate at high speed when the wiper high relay is On.

Wiper Washer Motor

Vehicle Control Systems/Computer/Integrating Systems/Special Functions/Body Control Module/Miscellaneous Test

This output control commands the WSH PCB relay On or Off.