STEP 1. Check the high-voltage connector and wiring harness.
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the power drive unit (FEMCU) DTC set.
Check whether the power drive unit (FEMCU) related DTC is set.(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the electric motor switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
".
(2) Turn the electric motor switch from OFF position to ON position.
(3) Check the DTC is set.
(4) Turn the electric motor switch to the OFF position.
Is the DTC set?
Diagnose the power drive unit [Refer to GROUP 54Db - DTC chart for electric motor control unit ]. Then go to Step 3. Go to Step 3.
STEP 3. Using scan tool (M.U.T.-IIISE), check whether the generator control unit (GCU) DTC set.
STEP 4. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.(1) Erase the DTC.
(2) Electric motor switch: OFF to ON
(3) Check the DTC.
Is the DTC set?
Go to Step 5. Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, - How to Cope with Intermittent Malfunctions ).
STEP 5. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
Recheck the DTC.(1) Erase the DTC.
(2) Electric motor switch: OFF to ON
(3) Check the DTC.
Is the DTC set?
Replace the electric heater (electric heater-ECU) (Refer to ). This diagnosis is complete.