Wiper Motor Power Source Circuit: Procedure
- CHECK MAIN BODY ECU LH (COWL SIDE J/B LH)
- Measure the voltage according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard voltage
Tester Connection Condition Specified Condition LD-13 - LD-8 (SGND) Engine switch off Below 1 V Engine switch on (IG) 10 to 14 V LD-13 - LD-9 (SGND) Engine switch off Below 1 V Engine switch on (IG) 10 to 14 V LM-1 - LD-3 (GND) Always 10 to 14 V
NG → See step 2
OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- Measure the voltage according to the value(s) in the table below.
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH (COWL SIDE J/B LH) - BODY GROUND)
- Disconnect the LD and main body ECU LH (cowl side J/B LH) connectors.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Condition Specified Condition LD-3 (GND) - Body ground Always Below 1 Ω LD-9 (SGND) - Body ground Always Below 1 Ω LD-8 (SGND) - Body ground Always Below 1 Ω
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH (COWL SIDE J/B LH) - BATTERY)
- Measure the voltage according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard voltage
Tester Connection Condition Specified Condition LD-13 - Body ground Engine switch off Below 1 V Engine switch on (IG) 10 to 14 V LM-1 - Body ground Always 10 to 14 V
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- Measure the voltage according to the value(s) in the table below.