Supra L6-3.0L DOHC (7M-GE) (1990)
Windshield Washer Switch: Testing and Inspection
Fig. 20 Wiper Relay.
Fig. 21 Wiper Relay Intermittent Operation Inspection.
Fig. 22 Wiper Relay Washer Circuit Inspection.
1.
Inspect intermittent switch operation as follows:
a. Connect battery positive lead to terminal 5 and negative lead to terminal 7, Fig. 20.
b. Using suitable wire, connect terminals 7 and 8, check continuity between terminals 1 and 5, as shown in Fig. 21.
2.
Inspect washer circuit relay as follows:
a. Connect battery positive lead to terminal 5 and negative lead to terminal 7.
b. Check continuity between terminals 1 and 5 as shown in Fig. 22.
c. If operation is not as indicated, replace relay.