Hybrid Vehicle Control ECU Communication Stop Mode [02/2019 - 12/2021]: Procedure
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR OPEN IN CAN BUS WIRE (HYBRID VEHICLE CONTROL ECU ASSEMBLY BRANCH WIRE)
- Disconnect the cable from the negative (-) auxiliary battery terminal.
- Disconnect the hybrid vehicle control ECU assembly connector.
*a Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)- - - Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition A31-21 (CA1H) - A31-8 (CA1L) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω A31-7 (CA3P) - A31-20 (CA3N) Cable disconnected from negative (-) auxiliary battery terminal 54 to 69 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
- Disconnect the hybrid vehicle control ECU assembly connectors.
- Measure the resistance according to the value(s) in the table below.
*a Front view of wire harness connector
(to Hybrid Vehicle Control ECU Assembly)- - Standard Resistance
Tester Connection Condition Specified Condition A31-12 (E01) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A31-11 (E02) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A30-3 (E1) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω A31-34 (E12) - Body ground Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω - Reconnect the cable to the negative (-) auxiliary battery terminal.NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Refer to INITIALIZATION [02/2019 - 10/2019] , or refer to INITIALIZATION [10/2019 - 06/2020] , or refer to INITIALIZATION [06/2020 - 08/2020] , or refer to INITIALIZATION [08/2020 - 12/2021]
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition A31-35 (IG2) - Body ground Ignition switch ON 11 to 14 V Ignition switch off Below 1 V A30-27 (BATT) - Body ground Ignition switch off 11 to 14 V A29-11 (+B1) - Body ground Auxiliary battery voltage applied to terminal A29-5 (MREL) 11 to 14 V A30-1 (+B2) - Body ground Result
Proceed to OK NG
Result:
OK
REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY
Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR