Pinpoint Test 13

Flowchart No.13 Symptom
Seat belt warning light illuminates; warning alarm does not sound

Seat belt warning alarm sounds for 4 to 8 seconds after ignition switch is turned to ON (belt fastened)

Possible cause
^ Damaged CPU
^ Damaged buckle switch
^ Open circuit in wiring harness
^ Poor connection of connector

Step 1
1. Remove the front side trim.
2. Remove the joint box attaching bolt and screw.
3. Remove the CPU from the joint box.
4. Make sure the seat belt is unfastened.

Ohmmeter Connection:

Action Chart:

5. Check for continuity between terminal 1K of the CPU connector on the joint box and ground.

Step 2
1. Disconnect the buckle switch connector.

Ohmmeter Connection:

Reference:

2. Check for continuity between terminals C and F of the switch.
3. If correct, repair the wiring harness (CPU-buckle switch).
4. If not as specified, replace the buckle.