STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
(1) Connect scan tool (M.U.T.-III). Refer to "How to connect the scan tool ." (2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the CAN bus line found to be normal?
Go to Step 2. Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).
STEP 2. Check whether the front passenger's seat is damped with liquid or steam.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is stored.(1) Erase the DTC.
(2) Turn the ignition switch to the "ON" position.
(3) Check if the DTC is stored.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC stored?
Go to Step 4. There is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).
STEP 4. Check open circuit in GND line between occupant classification-ECU connector and body ground.
STEP 5. Check of short to power supply, short to ground, and open circuit in SENSE, GUARD line between occupant classification-ECU connector and occupant classification sensor connector.
STEP 6. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the occupant classification-ECU.(1) Erase the DTC.
(2) Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3) Check if DTC is stored.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC stored?
Replace the front seat cushion cover and pad assembly (Refer to GROUP 52A, Front Seat Assembly ). There is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).