Inspection Procedure

1. Disconnect the E4, E5, E6 and E7 ECM connectors.
2. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION - SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   E4-1 (E04) - Body ground	Below 1 Ω
   E4-6 (E02) - Body ground	Below 1 Ω
   E4-7 (E01) - Body ground	Below 1 Ω
   E5-3 (ME01) - Body ground	Below 1 Ω
   E5-28 (E1) - Body ground	Below 1 Ω
   E6-7 (E03) - Body ground	Below 1 Ω

3. Measure the voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION - SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   E7-4 (+B) - Body ground	Power switch OFF	10 to 14 V

   Fig 1: Checking Wire Harness (ECM - Battery And Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK : REPLACE ECM