Hybrid Vehicle Control ECU Communication Stop Mode

CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: Hybrid Vehicle Control ECU Communication Stop Mode

Hybrid Vehicle Control ECU Communication Stop Mode

DESCRIPTION





HINT: "Hybrid Control" refers to the circuit that includes the hybrid vehicle control ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
- Turn the power switch off before measuring the resistances of CAN bus main wires and CAN bus branch wires.
- After the power switch is turned off, check that the key reminder warning system and lighting system are not operating.
- Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch, any other switches, or the doors. If any doors need to be opened in order to check connectors, open the doors and leave them open.
HINT: Operating the power switch, any other switches, or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.

PROCEDURE

1. CHECK FOR OPEN IN CAN BUS WIRE (HV CONTROL ECU MAIN WIRE)




(a) Disconnect HV control ECU connector A61.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE HV CONTROL ECU MAIN WIRE OR CONNECTOR
OK -- Continue to next step.
2. CHECK ECM POWER SOURCE CIRCUIT
(a) Check the ECM power source circuit ECM Power Source Circuit.
NG -- REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT
OK -- REPLACE HV CONTROL ECU