Diagnosis Circuit [12/2012 - ]: Procedure

1. Check if a CAN communication DTC is output.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2012 - 10/2015] or HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] .

   Result	Proceed to
   	DTCs are output
   	DTC is not output

Result: 

DTCs are output 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2012 - 10/2015]  or  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ]  . 

Result: 

DTC is not output 

See step  2

1. Turn the ignition switch off.

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *c

   *a

   Front view of DLC3

   *b

   Front view of wire harness connector (to ECM)

2. Disconnect the A62 connector from the ECM.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G14-13 (TC) - A62-23 (TC)	Always	Below 1 Ω

   Result	Proceed to
   	OK
   	NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G14-4 (CG) - Body ground	Always	Below 1 Ω

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *a	Front view of DLC3

   Result	Proceed to
   	OK
   	NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A62-23 (TC) - Body ground	Always	Below 1 Ω

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

   *a	Front view of wire harness connector (to ECM)

   Result	Proceed to
   	OK
   	NG

Result: 

OK 

REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [12/2012 - ]  . 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU