WIPER AND WASHER SYSTEM (w/ Rain Sensor) - Wiper and Washer Switch Circuit

DESCRIPTION

This circuit provides power to operate the windshield wiper switch. The manual operation signals are sent to the windshield wiper ECU.

Wiper And Washer System (W/ Rain Sensor) - Wiper And Washer Switch Circuit. WIPER / WASHER. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

1.INSPECT FUSE (ECU-IG No. 1)

Remove the ECU-IG No. 1 fuse from the cowl side junction block LH.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
ECU-IG No. 1 fuse Always Below 1 Ω

NG

REPLACE FUSE

OK

2.READ VALUE USING INTELLIGENT TESTER (WINDSHIELD WIPER SWITCH)

Check the Data List for proper functioning of the windshield wiper switch.

Combination Switch
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
F Wiper LO SW	Front wiper LO switch / ON or OFF	ON: Front wiper switch in LO OFF: Front wiper switch not in LO	-
F Wiper HI SW	Front wiper HI switch / ON or OFF	ON: Front wiper switch in HI OFF: Front wiper switch not in HI	-
F Wiper AUTO SW	Front wiper AUTO switch / ON or OFF	ON: Front wiper switch in AUTO OFF: Front wiper switch not in AUTO	-
F Wiper MIST SW	Front wiper MIST switch / ON or OFF	ON: Front wiper switch in MIST OFF: Front wiper switch not in MIST	-
F Washer SW	Front washer switch / ON or OFF	ON: Front washer switch on OFF: Front washer switch off	-

NG

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()

3.CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BATTERY AND BODY GROUND)

Disconnect the E16 switch connector.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
for LH Side
Tester Connection Switch Condition Specified Condition
E16-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V
E16-2 (+B) - Body ground Engine switch off Below 1 V
for RH Side
Tester Connection Switch Condition Specified Condition
E16-3 (+B) - Body ground Engine switch on (IG) 11 to 14 V
E16-3 (+B) - Body ground Engine switch off Below 1 V

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
for LH Side
Tester Connection Condition Specified Condition
E16-10 (E) - Body ground Always Below 1 Ω
for RH Side
Tester Connection Condition Specified Condition
E16-5 (E) - Body ground Always Below 1 Ω

for LH Side
Tester Connection	Condition	Specified Condition
E16-10 (E) - Body ground	Always	Below 1 Ω

for RH Side
Tester Connection	Condition	Specified Condition
E16-5 (E) - Body ground	Always	Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE WINDSHIELD WIPER SWITCH ()