B1650

DTC B1650 OCCUPANT CLASSIFICATION SYSTEM MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The occupant classification ECU circuit consists of the airbag sensor assy center and the occupant classification system.

If the airbag sensor assy center receives signals from the occupant classification ECU, it judges whether or not the front passenger airbag assy and the front seat airbag assy RH should be operate.

DTC B1650/32 is recorded when an open is detected in the occupant classification ECU circuit.

Wiring Diagram:

Step 1:

Step 2 - 4:

Step 5 - 6:

Step 7 - 8:

Step 9 - 10:

Step 11:

INSPECTION PROCEDURE

CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment.

a. Turn the ignition switch to the LOCK position.
b. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
c. Disconnect the connectors from the airbag sensor assy center.
d. Disconnect the connectors from the horn button assy.
e. Disconnect the connectors from the front passenger airbag assy.
f. Disconnect the connector from the front seat airbag assy LH.
g. Disconnect the connector from the front seat airbag assy RH.
h. Disconnect the connector from the curtain shield airbag assy LH.
i. Disconnect the connector from the curtain shield airbag assy RH.
j. Disconnect the connector from the front seat outer belt assy LH.
k. Disconnect the connector from the front seat outer belt assy RH.