STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
STEP 3. Measure the resistance at main drive lithium-ion battery connector.
(1) Disconnect the D-33 main drive lithium-ion battery connector, and measure at the wiring harness side.
(2) Check the resistance between the D-33 main drive lithium-ion battery connector (terminal No.3) and body ground.OK: Continuity exists (2 Ω or less)
Is the check result normal?
Go to Step 4. Repair the connector(s) or wiring harness. Then go to Step 8.
STEP 4. Check of open circuit, short to ground or short to power supply in CNBL, CNBH line between main drive lithium-ion battery connector and BMU connector.
STEP 5. Resistance measurement at BMU connector.
STEP 6. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.(1) Erase the DTC.
(2) Turn off the power supply mode of the electric motor switch.
(3) Turn on the power supply mode of the electric motor switch.
(4) Set scan tool (M.U.T.-IIISE) to the actuator testing mode for item No.3: BAT. heating system power relay (Refer to ).- Main drive lithium-ion battery PTC heater main relay is ON.
(5) Check the DTC is set.
Is the DTC set?
Unload main drive lithium-ion battery from the vehicle and repair or replace defective parts (the circuit and the terminal resistance can have an abnormality inside the main drive lithium-ion battery). Then go to Step 8. Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
STEP 7. Check of open circuit and damage circuit in line between main drive lithium-ion battery PTC heater connector and joint connector.
STEP 8. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to OBD-II Drive Cycle - Pattern 1 . (2) Check if the DTC is set.
Is the DTC set?
Retry the troubleshooting. The inspection is complete.