ECM Communication Stop Mode [10/2018 - ]: Procedure
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- CHECK FOR OPEN IN CAN BUS LINES (ECM MAIN LINE AND BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to ECM)Standard Resistance
Tester Connection Condition Specified Condition A36-7 (CAN+) - A36-17 (CAN-) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω A36-8 (CANH) - A36-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Result Proceed to OK A NG (No. 2 CAN junction connector main line) B NG (No. 2 CAN junction connector branch line) C
Result:
B
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM)
Result:
C
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (ECM)
Result:
A
See step 2
- CHECK ECM POWER SOURCE CIRCUIT
- Check the ECM power source circuit.
Refer to ECM Power Source Circuit [10/2018 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [10/2018 - 07/2022] , or refer to REMOVAL [07/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Check the ECM power source circuit.