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Wiper Control Relay Circuit Test

Leave wiper control relay connector attached. Turn ignition on. Check for continuity and voltage between chassis ground and specified terminals of wiper control relay connector. See WIPER CONTROL RELAY CIRCUITS TEST  table. See Fig 1. If continuity or voltage is not as specified, repair faulty circuit or component.

WIPER CONTROL RELAY CIRCUITS TEST

Terminal No. (Wire Color) Specification
1 (Blue/White)
Washer ON No Voltage
Washer OFF Battery Voltage
3 (Light Green/Red)
Wiper INT Slow No Voltage
Wiper OFF or INT Fast Battery Voltage
4 (White/Green)
Wiper HIGH No Voltage
Wiper OFF or INT Slow Battery Voltage
5 (Red)
Wiper OFF Or HIGH No Voltage
Wiper INT Or LOW Battery Voltage
6 (Yellow/Green)
Wiper OFF Or INT Slow No Voltage
Wiper HIGH Battery Voltage
7 (Blue)
Ignition OFF Or ACC No Voltage
Ignition ON Battery Voltage
8 (Red/Blue)
Wiper OFF To INT Or LOW (1)
Wiper INT Or LOW To HIGH (1)
9 (Red/Yellow)
Wiper HIGH To INT Or LOW (1)
Wiper INT Or LOW To OFF (1)
10 (Blue/Black)
Wiper OFF No Voltage
Wiper LOW Battery Voltage
12 (Red/Black)
Wiper INT Or LOW No Voltage
Wiper OFF Or HIGH Battery Voltage
13 (Green/Red) No Voltage
14 (White/Black) Continuity
(1) From no voltage to battery voltage as switch is changed.
Fig 1: Terminal Of Wiper Control Relay Connector ID (ES300)
G93C01699Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002