Inspection Procedure

1. Remove the AM2 fuse from the cowl side J/B RH.
2. Measure the resistance of the fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to next step. 

1. Disconnect the J55 ECU connector.
2. Measure the resistance and voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION TABLE
   
   

   Tester Connection	Condition	Specified Condition
   J55-33 (AM1) - Body ground	Always	10 to 14 V
   J55-12 (AM2) - Body ground	Always	10 to 14 V

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION TABLE
   
   

   Tester Connection	Specified Condition
   J55-6 (GND2) - Body ground	Below 1 ohms

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 1: Identifying Power Source Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step. 

1. Disconnect the J55, J26 and 2F ECU connectors.
2. Measure the resistance between the specified terminals on the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION TABLE
   
   

   Tester Connection	Specified Condition
   MPX1 (J55-7) - MPX2 (J26-7)	Below 1 ohms
   MPX2 (J55-24) - 2F-5	Below 1 ohms

   Result 

   RESULT DESCRIPTION TABLE
   
   

   Result	Proceed to
   Both are OK	A
   One is OK	B
   Both are NG	C

B: REPLACE POWER SOURCE CONTROL ECU AND REPAIR OR REPLACE HARNESS OR CONNECTOR 

C: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Windshield Wiper Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

A: REPLACE POWER SOURCE CONTROL ECU