Hybrid Vehicle Control ECU Communication Stop Mode [11/2016 - ]: Procedure

1. Disconnect the cable from the negative (-) auxiliary battery terminal.
2. Disconnect the F136 and F137 hybrid vehicle control ECU assembly connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU Assembly)

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

   Standard Resistance

   BUS 2 BRANCH LINE
   
   

   Tester Connection	Condition	Specified Condition
   F137-25 (CA1H) - F137-24 (CA1L)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

   BUS 5 BRANCH LINE
   
   

   Tester Connection	Condition	Specified Condition
   F136-34 (CA2H) - F136-35 (CA2L)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

   Result

   Result	Proceed to
   OK	A
   NG (Bus 2 Branch line)	B
   NG (Bus 5 Branch line)	C

Result: 

B 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY) 

Result: 

C 

REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY) 

Result: 

A 

See step  2

1. Check the ECU power source circuit.

   Refer to ECU Power Source Circuit [11/2016 - ]

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2016 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)