Gateway 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 network gateway ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N82-16 (CA1H) - N82-15 (CA1L)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Network Gateway ECU)

Result: 

NG 

REPAIR OR REPLACE NETWORK GATEWAY ECU CAN BRANCH WIRE OR CONNECTOR (CA1H, CA1L) 

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   N82-2 (BATT) - Body ground	Always	11 to 14 V
   N82-10 (IG1) - Body ground	Engine switch on (IG)	11 to 14 V
   N82-9 (IG2) - Body ground	Engine switch on (IG)	11 to 14 V

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   N82-4 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Network Gateway ECU)

Result: 

OK 

REPLACE NETWORK GATEWAY ECU 

(Refer to REMOVAL [09/2014 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR