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WIPER AND WASHER SWITCH INSPECTION

id091900802800

1. Measure the voltage at each terminal (other than terminals A and F).

  • If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item (s)".

2. Disconnect the wiper and washer switch connector.

3. Verify that continuity at terminals A and F is as indicated in the Terminal Voltage Table (Reference).

  • If there is any malfunction, inspect the parts under "Inspection item (s)".

  - If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the wiper and washer switch.

## Terminal Voltage Table (Reference)

Terminal | Signal | Connected to | Test condition | Voltage (V) | Inspection item (s)
--- | --- | --- | --- | --- | ---
A | GND | Body GND | Under any condition: Inspect for continuity to ground. | Continuity | • GND
B | Windshield wiper HI operation input | Relay block | Turn the windshield wiper and washer switch to HI position. | Windshield wiper motor operating | 1.0 or less | • Relay block • Related wiring harness
Windshield wiper motor not operating | B+
D | Windshield washer operation input | Relay block | Turn the windshield wiper and washer switch to the washer position. | 1.0 or less | • Relay block • Related wiring harness
Except above condition | B+
E | Rear washer switch input | Relay block | Turn the windshield wiper and washer switch to the washer position. | 1.0 or less | • Relay block • Related wiring harness
Except above condition | B+
F | Auto stop operation check | Relay block | While the windshield wiper is stopped: Inspect for continuity to ground. | Continuity | • Windshield wiper motor • Relay block • Related wiring harness
G | Rear wiper operation input | Relay block | Turn the rear wiper and washer switch to the ON position. | Rear wiper motor operating | 1.0 or less | • Relay block • Related wiring harness
Rear wiper motor not operating | B+
H | IG2 | R.WIP 10 A fuse | Turn the ignition switch to the ON position. | B+ | • R.WIP 10 A fuse • Related wiring harness
Turn the ignition switch to the ACC or LOCK position. | 1.0 or less
I | Windshield wiper LO operation input | Relay block | Turn the windshield wiper and washer switch to the LO position. | Windshield wiper motor operating | 1.0 or less | • Relay block • Related wiring harness
Windshield wiper motor not operating | B+
J | IG1 | WIPER 20 A fuse | Turn the ignition switch to the ON position. | B+ | • WIPER 20 A fuse • Related wiring harness
Turn the ignition switch to the ACC or LOCK position. | 1.0 or less