Wiper Switch: Testing and Inspection
WIPER AND WASHER: WIPER SWITCH: INSPECTION
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Check the front wiper switch.
(1) Measure the resistance of the switch.
Standard resistance:
(2) If the result is not as specified, replace the switch assembly.
(b) Check the front washer switch assembly.
(1) Measure the resistance of the switch.
Standard resistance:
(2) If the result is not specified, replace the switch assembly.
(c) Check the intermittent operation.
(1) Connect the voltmeter's positive (+) lead to terminal E10-3 (+1) and the negative (-) lead to terminal E9-2 (EW).
(2) Connect the battery's positive (+) lead to terminal E10-2 (+B) and the negative (-) lead to terminal E9-2 (EW) and E10-1 (+S).
(3) Turn the wiper switch to the INT position.
(4) Connect the battery's positive (+) lead to terminal E10-1 (+S) for 5 seconds.
(5) Connect the battery's negative (-) lead to terminal E10-1 (+S). Operate the intermittent wiper relay and check the voltage between terminals E10-3 (+1) and E9-2 (EW).
Standard voltage:
Refer to the illustration below.
(6) 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's positive (+) lead to terminal E10-2 (+B) and the negative (-) lead to terminals E10-4 (+2) and E9-2 (EW).
(3) Connect the voltmeter's positive (+) lead to E10-3 (+1) and the negative (-) lead to terminal E9-2 (EW).
(4) Turn the washer switch ON and OFF, and check the voltage between terminals E10-3 (+1) and E9-2 (EW).
OK:
Refer to the illustration below.
(5) If the result is not as specified, replace the switch assembly.
(e) Check the rear wiper switch.
(1) Measure the resistance of the switch.
Standard resistance:
(2) If the result is not as specified, replace the switch assembly.
(f) Check the rear washer switch.
(1) Measure the resistance of the switch.
Standard resistance:
(2) If the result is not as specified, replace the switch assembly.