Wiper Switch: Testing and Inspection

WIPER / WASHER: WIPER SWITCH: INSPECTION

INSPECTION

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY






(a) Check the windshield wiper switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






If the result is not as specified, replace the switch assembly.
(b) Check the front washer switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






If the result is not as specified, replace the switch assembly.
(c) Check the intermittent operation.
(1) Connect the voltmeter positive (+) lead to terminal E16-3 (+1) and the negative (-) lead to terminal E15-2 (EW).
(2) Connect the battery positive (+) lead to terminal E16-2 (+B) and the negative (-) lead to terminal E15-2 (EW) and E16-1 (+S).
(3) Turn the wiper switch to the INT position.
(4) Connect the battery positive (+) lead to terminal E16-1 (+S) for 5 seconds.
(5) Connect the battery negative (-) lead to terminal E16-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals E16-3 (+1) and E15-2 (EW).
Standard Voltage:
Refer to the illustration below.





If the result is not as specified, replace the switch assembly.
(d) Check the front washer operation.
(1) Turn the wiper switch OFF.
(2) Connect the battery positive (+) lead to terminal E16-2 (+B) and the negative (-) lead to terminals E16-4 (+S) and E15-2 (EW).
(3) Connect the voltmeter positive (+) lead to E16-3 (+1) and the negative (-) lead to terminal E15-2 (EW).
(4) Turn the washer switch ON and OFF, and check the voltage between terminals E16-3 (+1) and E15-2 (EW).
OK:
Refer to the illustration below.





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






(e) Check the rear wiper switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






If the result is not as specified, replace the switch assembly.
(f) Check the rear washer switch.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:






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