STEP 3. Check the EV-CAN for short to each other. Resistance measurement at PHEV-ECU connector by backprobing.
caution | A digital multimeter should be used. For details refer to . |
caution | The test wiring harness should be used. For details refer to . |
(1) Turn off the power supply mode of the electric motor switch.
(2) caution | When measuring the resistance, disconnect the negative 12V starter battery terminal. For details refer to . |
Ensure that the negative 12V starter battery terminal is disconnected.
(3) Resistance between PHEV-ECU connector terminal Nos.53 and 52 by backprobingOK: 60 ± 10 Ω
Is the check result normal?
: The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ). : Perform diagnosis Item 16 "Diagnose shorts between CAN_H and L lines (EV-CAN)". Refer to . : Check the wires between PHEV-ECU connector and joint connector (CAN2) for open circuit, and check the terminal resistors in the PHEV-ECU and the BMU for open circuit. Then repair or replace if necessary.