ECM Communication Stop Mode [08/2016 - 11/2017]: Procedure
- PRECAUTION NOTE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (Refer to PRECAUTION [08/2016 - ] ).
Result:
NEXT
See step 2
- DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
- Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.WARNING:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTE:When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [08/2016 - 11/2017] )
Result:
NEXT
See step 3
- Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
- CHECK CAN BUS LINE FOR DISCONNECTION (ECM MAIN WIRE)
- Disconnect the ECM connector.
*a Front view of wire harness connector
(to ECM) - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Switch Condition Specified Condition A69-13 (CANH) - A69-26 (CANL) Ignition switch off 108 to 132 Ω
Result:
NG
REPAIR OR REPLACE CAN MAIN WIRE CONNECTED TO ECM (CAN-H, CAN-L)
Result:
OK
See step 4
- Disconnect the ECM connector.
- CHECK ECM POWER SOURCE CIRCUIT
- Check the ECM power source circuit (Refer to ECM Power Source Circuit [08/2016 - 11/2017] ).
Result:
OK
REPLACE ECM
(Refer to REMOVAL [08/2016 - ] )
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR