Initial Inspection and Diagnostic Overview

INSPECTION.
Passive Shoulder Belt Motor
1. Remove the front and center pillar trim and disconnect the passive shoulder belt motor connector.
2. Connect 12V to terminal a and ground terminal b. Verify that the motor rotates in the forward direction (release).
3. Reverse the above connection, and check that the motor rotates in the rearward direction (lock).

Caution: Do not operate the motor for an extended period of time.

Limit Switch
1. Remove the front and center pillar trim, disconnect the passive shoulder belt motor connector (MX-6) or rear limit switch connector (626) and the front limit switch connector.
2. Position the shoulder belt as shown using the emergency handle.
3. Check for continuity between the limit switch terminals using an ohmmeter.

Door Catch Switch (in front door lock assembly)
1. Remove the door trim and screen.
2. Disconnect the door catch switch connector.
3. Check for continuity between the terminals using an ohmmeter.

Buckle Switch (Lap Belt)
1. Disconnect the buckle switch connector.
2. Check continuity of the switch with an ohmmeter.

Shoulder Belt Warning Switch
1. Remove the center pillar trim, and disconnect the passive shoulder belt motor connector.
2. Check continuity between the terminals with an ohm meter passive shoulder belt is at the rear locked position.

Emergency Lock Retractor (ELR)

Caution: Do not disassemble the buckle and retractor assembly.

1. Verify that the belt can be pulled out smoothly and that it moves smoothly when worn.
2. Verify that the retractor locks when quickly pulling the belt.

3. Remove the retractor.
4. Hold the retractor as it is installed.
5. Slowly incline the retractor while pulling out the belt.
6. Verify that the retractor locks at approx. 30 degrees inclination.

Webbing
Inspect the webbing for scars, tears, and wear and for deformation of the fittings.

Seat Belt Warning Light

Terminal voltage Of Passive Shoulder Belt Control Unit