Initial Inspection and Diagnostic Overview

1. INSPECT INTEGRATION RELAY OPERATION







a. Connect the positive (+) lead from the battery to terminals 1 and 7.
b. Connect the positive (+) lead from the battery to terminal 9 through a 3.4 W test bulb.
c. Check that the test bulb lights up and buzzer sounds for 4 - 8 seconds when the negative (-) lead from the battery is connected to terminal 10.







d. Check that the buzzer sounding in (c) stops when the negative (-) lead from the battery is connected to terminal 8.

If operation is not as specified, replace the integration relay.







2. INSPECT RELAY CIRCUIT
Remove the relay from the junction block No.1 and inspect the connectors on the junction block side.







If circuit is not as specified, try replacing the relay with a new one.







3. INSPECT BUCKLE SWITCH CONTINUITY
a. Check that there is continuity between terminals 1 and 2 on the switch side connector with the switch ON (belt fastened).
b. Check that there is no continuity between terminals 1 and 2 on the switch side connector with the switch OFF (belt unfastened).

If operation is not as specified, replace the seat belt inner belt.

If the circuit is not as specified, inspect the circuits connected to other parts.