B1821

DTC B1821 OPEN IN SIDE SQUIB (D SEAT SIDE) CIRCUIT

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The side squib (D seat side) circuit consists of the air bag sensor assembly center and the front LH seat assembly. This circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are recorded when a malfunction is detected in the side squib (D seat side) circuit.

Wiring Diagram:

Step 1:

Step 2 - 3:

Step 4 - 5:

Step 6:

Step 7:

Step 8:

Step 9:

Step 10:

INSPECTION PROCEDURE

CAUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected air bag 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 air bag sensor assembly center.
d. Disconnect the connectors from the horn button assembly.
e. Disconnect the connectors from the front passenger air bag assembly.
f. w/ Side air bag: Disconnect the connector from the front seat air bag assembly LH.
g. w/ Side air bag: Disconnect the connector from the front seat air bag assembly RH.
h. w/ Curtain shield air bag: Disconnect the connector from the curtain shield air bag assembly LH.
i. w/ Curtain shield air bag: Disconnect the connector from the curtain shield air bag assembly RH.
j. Disconnect the connector from the front seat outer belt assembly LH.
k. Disconnect the connector from the front seat outer belt assembly RH.