Toyota Venza: Inspection

INSPECTION

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Front Wiper Switch Tester Connection Switch Condition Specified Condition D40-1 (+S) - D40-3 (+1) OFF Below 1 Ω INT D40-2 (+B) - D40-3 (+1) MIST LO D40-2 (+B) - D40-4 (+2) HI Front Washer Switch Tester Connection Switch Condition Specified Condition D39-2 (EW) - D39-3 (WF) ON Below 1 Ω OFF 10 kΩ or higher Rear Wiper Switch Tester Connection Switch Condition Specified Condition D39-6 (C1R) - D39-2 (EW) OFF 10 kΩ or higher D39-7 (+1R) - D39-2 (EW) D39-6 (C1R) - D39-2 (EW) INT Below 1 Ω D39-7 (+1R) - D39-2 (EW) HI Below 1 Ω Rear Washer Switch Tester Connection Switch Condition Specified Condition D40-5 (WR) - D39-2 (EW) OFF 10 kΩ or higher D39-7 (+1R) - D39-2 (EW) D40-5 (WR) - D39-2 (EW) WASH Below 1 Ω D40-5 (WR) - D39-2 (EW) ON + WASH Below 1 Ω D39-7 (+1R) - D39-2 (EW) If the result is not as specified, replace the windshield wiper switch assembly. Text in Illustration *1 Component without harness connected (Windshield Wiper Switch Assembly)

(b) Check the intermittent operation.

(1) Connect a voltmeter positive (+) lead to terminal D40-3 (+1) and a negative (-) lead to terminal D39-2 (EW).

(2) Connect a battery positive (+) lead to terminal D40-2 (+B) and a negative (-) lead to terminal D39-2 (EW) and D40-1 (+S).

(3) Turn the wiper switch to the INT position.

(4) Connect a battery positive (+) lead to terminal D40-1 (+S) for 5 seconds.

(5) Connect a battery negative (-) lead to terminal D40-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals D40-3 (+1) and D39-2 (EW).

OK:

Voltage changes as shown in the illustration.

If the result is not as specified, replace the windshield wiper switch assembly.