WIPER DIAGNOSIS

1
WIPER DIAGNOSIS

• CHAPTER 11
• LAB MANUAL

2
WIPER PROBLEMS

• NO OPERATION
• INTERMITTENT OPERATION
• CONTINOUS OPERATION
• WIPER WILL NOT PARK
• MECHANICAL DEFECT

3
DIAGNOSTIC STRATEGY

• USE WIRING DIAGRAMS
• DETERMINE IF ELECTRICAL OR MECHANICAL PROBLEMS
• USE PROCESS OF ELIMINATION BY OPERATING OTHER
  SYSTEM CIRCUITS
• FAMILIARIZE WITH OPERATION

4
NO OPERATION IN ONE SPEED ONLY

• USE KNOWLEDGE OF SYSTEM TO ELIMINATE POSSIBLE
  PROBLEMS

5
WIPERS WILL NOT PARK
L391

• MOST COMMON COMPLAINT
• PARK SWITCH COULD BE FAULTY

6
REPLACING WIPER MOTOR

• CAUTION!!!! WIPER MOTORS CONTINOUS BATTERY
  POWER!
• DISCONNECT WIPER ARMS
• REMOVE COWL PANELS

11-5L
7
WIPER SWITCH TESTING
11-13L
8
WIPER SWITCH REPLACEMENT
11-17L
9
INTERMITTENT WIPER SYSTEM DIAGNOSIS