STEP 1. Using scan tool (M.U.T.-IIISE), check the data list.
(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 Scan Tool (M.U.T.-IIISE)
".
(2) Check that the following data list display contents are normal (Refer to ).Item No.21: Interior temperature sensor
Is the check result normal?
Go to Step 4. Go to Step 2.
STEP 2. Check of open and short circuit in SENG and INC line between interior temperature sensor and heater controller assembly (A/C-ECU) connector.
STEP 3. Check the interior temperature sensor.
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?
Replace the heater controller assembly (A/C-ECU) (Refer to ). The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).