Battery ECU Communication Stop Mode [08/2021 - ]: Procedure
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- CHECK FOR OPEN IN CAN BUS LINES (BATTERY ECU ASSEMBLY BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the y16 battery ECU assembly connector.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Battery ECU Assembly)Standard Resistance
Tester Connection Condition Specified Condition y16-29 (CA2H) - y16-28 (CA2L) 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 (BATTERY ECU ASSEMBLY)
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Check the battery ECU assembly power source circuit.
Refer to ECU Power Source Circuit [06/2018 - ]
Result
Result OK NG
Result:
OK
REPLACE BATTERY ECU ASSEMBLY. Refer to REMOVAL [08/2021 - 09/2022] , or refer to REMOVAL [09/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Check the battery ECU assembly power source circuit.