Rear Wipers

DIAGNOSIS OF THE REAR
WINDOW WIPER/WASHER SYSTEM

Always perform the SYSTEM CHECK first Rear as a guide to normal operation, then verify that power and ground are at the correct wiper motor terminals. Refer to WIPER / WASHER SWITCH TEST Wiper Washer Switch Test

The wiper motor and controller assemblies cannot be repaired. If diagnosis leads to a faulty motor or controller, replace them.

1. CHECK condition of RRWPR Fuse. If Fuse is open, LOCATE and REPAIR the source of overload. REPLACE Fuse.
2. CHECK Grounds G113 and G400 are clean and tight.
3. CHECK for mechanical binding.
^ CHECK for a broken(or partially broken) wire inside of the insulation which could cause system malfunction but prove "GOOD" in a Continuity/Voltage CHECK with a system disconnected. These Circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring for a Voltage drop with the system operational (under load).
^ CHECK for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.