Inspection Procedure

1. Disconnect the A6 connector from the ECM.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   A6-3 (TC) - J21-13 (TC)	Always	Below 1 Ω

Fig 1: Identifying A6 Connector From ECM
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM) 

OK: Go to Next Step 

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

   Standard resistance 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   J21-4 (CG) - Body ground	Always	Below 1 Ω

Fig 2: Identifying DLC3 Connector Terminal CG
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND) 

OK: Go to Next Step 

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

   Standard resistance 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   J21-13 (TC) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying DLC3 Connector Terminal TC
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE