Certification ECU Communication Stop Mode [11/2015 - ]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the G87 smart key ECU assembly (certification ECU) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G87-14 (CANH) - G87-15 (CANL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   TEXT IN ILLUSTRATION
   
   

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

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (SMART KEY ECU ASSEMBLY (CERTIFICATION ECU)) 

Result: 

OK 

See step  2

1. Disconnect the G85 smart key ECU assembly (certification ECU) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G85-11 (E) - Body ground	Cable disconnected from negative (-) auxiliary battery terminal	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

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

3. Connect the cable to the negative (-) auxiliary battery terminal.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G85-2 (+B) - Body ground	Ignition switch off	11 to 14 V
   G87-5 (IG) - Body ground	Ignition switch ON (IG)	11 to 14 V

Result: 

OK 

REPLACE SMART KEY ECU ASSEMBLY (CERTIFICATION ECU) 

Refer to REMOVAL [11/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)