Pinpoint Test 11

Flowchart No. 11 Symptom Seat belt warning light and alarm do not operate

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

Step 1
1. Disconnect the buckle switch connector.

Ohmmeter Connection:

Reference:

2. Check for continuity between terminals C and F of the switch.
3. If correct, go to Step 2.
4. If not as specified, replace the buckle.

Ohmmeter Connection:

Action Chart:

Step 2
Check for continuity between terminal F(B) of the buckle switch connector and ground.

Step 3
1. Remove the CPU from the joint box.

Ohmmeter Connection:

Action Chart:

2. With the driver's seat belt unfastened, check for continuity between terminal 1K of the CPU connector on the joint box and ground.