ECM Communication Stop Mode [08/2015 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the ECM 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
   A25-13 (CANH) - A25-26 (CANL)	Cable disconnected from negative (-) battery terminal	108 to 132 Ω

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (ECM MAIN LINE) 

OK: Go to next step 

1. Check the ECM power source circuit.

   for 2GR-FE: Refer to ECM Power Source Circuit [08/2015 - ]

   for 2AR-FE: Refer to ECM Power Source Circuit [08/2015 - ]

   Result

   Result	Proceed to
   OK (for 2GR-FE)	A
   OK (for 2AR-FE)	B
   NG	C

B → See step   4 

C → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

A → See step   3