Certification ECU Communication Stop Mode [09/2014 - 10/2015]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the certification ECU (smart key ECU assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N93-14 (CANH) - N93-15 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Certification ECU [Smart Key ECU Assembly])

Result: 

NG 

REPAIR OR REPLACE CERTIFICATION ECU CAN MAIN WIRE OR CONNECTOR (CANH, CANL) 

Result: 

OK 

See step  2

1. Connect the cable to the negative (-) battery terminal.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NOTE:

   When connecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [09/2014 - 10/2015] ).

2. Disconnect the certification ECU (smart key ECU assembly) connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A34-2 (+B) - Body ground	Always	11 to 14 V
   A34-10 (CUTB) - Body ground	Always	11 to 14 V
   N93-5 (IG) - Body ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A34-11 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Certification ECU [Smart Key ECU Assembly])

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

(Refer to REMOVAL [09/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR