ECM Communication Stop Mode [12/2019 - 11/2023]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS LINES (ECM MAIN LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the A27 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 A27-8 (CANH) - A27-18 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM)
Result:
OK
See step 2
- CHECK FOR OPEN IN CAN BUS LINES (ECM BRANCH LINE)
- 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 A27-7 (CAN+) - A27-17 (CAN-) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Result OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (ECM)
Result:
OK
See step 3
- Measure the resistance according to the value(s) in the table below.
- CHECK ECM POWER SOURCE CIRCUIT
- Check the ECM power source circuit.
Refer to ECM Power Source Circuit [12/2019 - 11/2023]
Result
Result OK NG
Result:
OK
REPLACE ECM
Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Check the ECM power source circuit.
