Wiper Relay Circuit Test
- Turn ignition off. Disconnect wiper relay connector. Check for continuity between ground and terminal No. 15. See Fig 1. If there is no continuity, repair circuit. If there is continuity, check resistance between terminals No. 14 and 18.
- Resistance should be about 50 ohms (interval switch SLOW) or less than 10 ohms (interval switch FAST). If resistance is okay, go to next step. If resistance is not okay, check for faulty circuits between wiper relay and wiper switch. If circuits are okay, replace wiper switch.
- Reconnect wiper control relay connector. Turn ignition on. Check voltage between chassis ground and specified terminals of wiper relay connector. See WIPER RELAY CIRCUITS TEST table. See Fig 1. If continuity or voltage is not as specified, repair faulty circuit or component.
WIPER RELAY CIRCUITS TEST
| Terminal No. (Wire Color) | Specification | |||
|---|---|---|---|---|
| 1 (Pink/Blue) | ||||
| Wiper OFF Or HIGH, Washer ON | No Voltage | |||
| Wiper LO Or INT, Washer ON | Battery Voltage | |||
| 2 (Red/Yellow) | ||||
| Wiper Except HIGH, Washer ON | Battery Voltage | |||
| Wiper HI, Washer ON | No Voltage | |||
| 3 (Light Green) | ||||
| Wiper Except HIGH | No Voltage | |||
| Wiper HIGH | Battery Voltage | |||
| 4 (Blue/Black) | ||||
| Wiper OFF | No Voltage | |||
| Wiper LOW | Battery Voltage | |||
| 5 (Blue/Orange), Wipers Operating | Battery Voltage | |||
| 6 (Green) | ||||
| Wiper HIGH To INT Or LOW | (1) * | |||
| Wiper INT Or LOW To OFF | (1) * | |||
| 7 (Violet), Wipers Operating | Battery Voltage | |||
| 8 (Blue) | Battery Voltage | |||
| 9 (Red) | ||||
| Wiper OFF | Battery Voltage | |||
| Wiper INT Or LOW | No Voltage | |||
| Wiper HIGH | Battery Voltage | |||
| 10 (Light Green/Red) | ||||
| Wiper OFF | Battery Voltage | |||
| Wiper INT | No Voltage | |||
| Wiper LOW | Battery Voltage | |||
| Wiper HIGH | Battery Voltage | |||
| 11 (Blue/Yellow) | ||||
| Washer OFF | Battery Voltage | |||
| Washer ON | No Voltage | |||
| 13 (Blue/Red) | ||||
| Concealment Switch FULL | Battery Voltage | |||
| Concealment Switch SEMI | No Voltage | |||
| 16 (Red/White) | ||||
| Wiper OFF To INT Or LOW | (1) * | |||
| Wiper INT Or LOW To HIGH | (1) * | |||
| 17 (Violet/Green) Continuity |
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