SRS Diagnosis Unit (SDU) Removal and Installation

Cautions

1. Never attempt to disassemble or repair the SDU. If faulty, replace it.

2. Do not drop or subject the SDU to impact or vibration. If dents, cracking, deformation, or rust are discovered on the SDU, replace it with a new SDU. Discard the old one.

3. After deployment of the air bags, replace the SDU with a new one.

4. Never use an ohmmeter on or near the SDU, and use only the special test equipment. Tools and Equipment








REMOVAL SERVICE POINTS

NEGATIVE (-) BATTERY CABLE DISCONNECTION

Disconnect the negative battery cable from the battery and tape the terminal.

Caution: Wait at least 60 seconds after disconnecting the battery cable before doing any further work. Air Bags Precautions

SDU AND HARNESS CONNECTOR DISCONNECTION

1. Place a flat-tipped screwdriver against the lock spring at the lock lever notch and push the spring toward the unit.

Caution: Do not use excessive force to raise the lock lever (green).

2. While pushing the locks of each connector downward, remove each connector from the SDU.

Caution: Because a double lock mechanism is employed for the SDU connectors, be careful not to exert undue force to remove the connectors, as this will damage them.

INSTALLATION SERVICE POINTS

1. SRS DIAGNOSIS UNIT (SDU) INSTALLATION


Caution: The SRS may not activate if SDU is not installed properly, which could result in the SRS system not operating properly in a collision.



2. SDU AND HARNESS CONNECTOR CONNECTION

After connecting each harness connector security and correctly to the SDU, be sure to press down the lock lever of the SDU.



3. POST INSTALLATION INSPECTION

Reconnect the negative battery terminal. Turn the ignition key to the "ON" position. Does the "SRS" warning light illuminated for about 7 seconds, turn OFF and then remain OFF for at least 45 seconds? If yes, SRS system is functioning properly. If no, consult SRS Warning Light Inspection. Testing and Inspection