Battery ECU Communication Stop Mode [04/2020 - 09/2022]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS LINES (BATTERY ECU ASSEMBLY BRANCH LINE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the z28 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 z28-9 (CA2H) - z28-1 (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 [04/2020 - 09/2022]
Result
Result OK NG
Result:
OK
REPLACE BATTERY ECU ASSEMBLY
Refer to REMOVAL [04/2020 - 09/2022]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
- Check the battery ECU assembly power source circuit.