STEP 1. Using scan tool (M.U.T.-IIISE), check the data list. <BMU>
STEP 2. Measure the voltage at the main drive lithium-ion battery connector.
(1) Disconnect the D-34 main drive lithium-ion battery connector, and measure at the wiring harness side.
(2) Turn on the power supply mode of the electric motor switch without depressing the brake pedal.
(3) Check the voltage between D-34 main drive lithium-ion battery connector (terminal No. 3) and body ground.OK: 4.7 - 5.3 volts
Is the check result normal?
Go to Step 4. Go to Step 3.
STEP 3. Measure the resistance at the BMU connector.
(1) Disconnect the BMU connector and D-34 main drive lithium-ion battery connector, and measure at the wiring harness side.
(2) Check the resistance between BMU connector (HTS terminal) and body ground.OK: No continuity
(3) Check the resistance between BMU connector (HTS terminal) and other terminal.OK: No continuity
(4) Check the resistance between BMU connector (HTS terminal) and D-34 main drive lithium-ion battery connector (terminal No. 3).OK: Continuity exists (2 Ω or less)
Is the check result normal?
Replace the battery management unit (BMU) (Refer to ). Then, go to Step 7. Repair the connector(s) or wiring harness. Then, go to Step 7.
STEP 4. Measure the resistance at the BMU connector (GHTS line).
(1) Disconnect the BMU connector and D-34 main drive lithium-ion battery connector, and measure at the wiring harness side.
(2) Check the resistance between BMU connector (GHTS terminal) and body ground.OK: No continuity
(3) Check the resistance between BMU connector (GHTS terminal) and other terminal.OK: No continuity
(4) Check the resistance between BMU connector (GHTS terminal) and D-34 main drive lithium-ion battery connector (terminal No. 8).OK: Continuity exists (2 Ω or less)
Is the check result normal?
Go to Step 5. Repair the connector(s) or wiring harness. Then, go to Step 7.
STEP 5. Measure the resistance at the main drive lithium-ion battery connector.
STEP 6. Measure the resistance at the main drive lithium-ion battery heater temperature sensor connector.
STEP 7. 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 procedure is complete.