Wiper Motor Power Source Circuit

DESCRIPTION

This circuit provides power to the front wiper motor and operates the main body ECU LH (cowl side J/B LH).

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK MAIN BODY ECU LH (COWL SIDE J/B LH)

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   LD-13 (IG) - LD-8 (SGND)	Engine switch off	Below 1 V
   	Engine switch on (IG)	10 to 14 V
   LD-13 (IG) - LD-9 (SGND)	Engine switch off	Below 1 V
   	Engine switch on (IG)	10 to 14 V
   LM-1 (WIG) - LD-3 (GND)	Always	10 to 14 V

NG	Go to step 2

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH (COWL SIDE J/B LH) - BODY GROUND)

1. Disconnect the LD and main body ECU LH (cowl side J/B LH) connectors.

2. 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

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU LH (COWL SIDE J/B LH) - BATTERY)

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   LD-13 (IG) - Body ground	Engine switch off	Below 1 V
   	Engine switch on (IG)	10 to 14 V
   LM-1 (WIG) - 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