Seat Occupant Sensor: Service and Repair

Occupant Classification ECU:

OCCUPANT CLASSIFICATION ECU

REMOVAL

1. PRECAUTION

CAUTION: Refer to Restraint Systems; Service Precautions before servicing the SRS system or related components.

2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Work must be started at least 90 seconds after the ignition switch is turned off and after the cable is disconnected from the negative (-) battery terminal.

3. REMOVE FRONT SEAT ASSEMBLY RH

HINT: Refer to the procedures up to "REMOVE FRONT SEAT ASSEMBLY"

4. REMOVE OCCUPANT CLASSIFICATION ECU




a. Disconnect the connectors from the occupant classification ECU.
b. Using a screwdriver, remove the occupant classification ECU.

INSTALLATION

1. INSTALL OCCUPANT CLASSIFICATION ECU
a. Check that the ignition switch is in the OFF position.
b. Check that the negative battery (-) cable is disconnected.

CAUTION: Work must be started at least 90 seconds after the ignition switch is turned off and after the cable is disconnected from the negative (-) battery terminal.

c. Install the occupant classification ECU.
d. Connect the connectors to the occupant classification ECU.

NOTE:
- If the occupant classification ECU has been dropped, or there are any cracks, dents or other defects in the case or connector, replace the occupant classification ECU with a new one.
- When installing the occupant classification ECU, be careful that the SRS wiring does not interfere with other parts and that it is not pinched between other parts.

2. INSTALL FRONT SEAT ASSEMBLY RH

HINT: Refer to the procedures up to "INSTALL FRONT SEAT ASSEMBLY".

3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. PERFORM INITIALIZATION
a. Perform initialization.

HINT: Some systems need initialization after reconnecting the cable to the negative battery terminal.

5. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK
a. Perform zero point calibration and sensitivity.

6. INSPECT SRS WARNING LIGHT
a. Inspect the SRS warning light.