STEP 1. Using scan tool (M.U.T.-IIISE), check whether the DTC is set.
STEP 2. Using scan tool (M.U.T.-IIISE), check the actuator test.
STEP 3. Check of short to power supply circuit and damage in FPWM line between the main drive lithium-ion battery connector and the battery management unit (BMU) connector.
STEP 4. Check of short to power supply circuit and damage in FPWM line between main drive lithium-ion battery connector and main drive lithium-ion battery cooling fan connector.
STEP 5. 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) Using scan tool (M.U.T.-IIISE), execute the following actuator test for approximately 10 seconds (Refer to ).- Item No.1: Battery cooling fan PWM
(5) Check the DTC.
Is the DTC set?
Replace the battery management unit (BMU) (Refer to ). 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 6. Check of short to ground or power supply, open circuit and damage in FRMF line between sub-battery management unit [BMU (SUB)] connector and main drive lithium-ion battery cooling fan connector.
STEP 7. 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) Using scan tool (M.U.T.-IIISE), execute the following actuator test for approximately 10 seconds (Refer to ).- Item No.1: Battery cooling fan PWM
(5) Check the DTC.
Is the DTC set?
Replace the sub-battery management unit [BMU (SUB)] on main drive lithium-ion battery (Refer to ). 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 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 6 . (2) Check if the DTC is set.
Is the DTC set?
Retry the troubleshooting. The procedure is complete.