B1620

DTC B1620 SIDE AIRBAG SENSOR ASSEMBLY (D SEAT SIDE) MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The side airbag sensor assembly (D seat side) consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.
If the airbag ECU assy receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated. DTC B1620 is recorded when a malfunction is detected in the side airbag sensor assembly (D seat side) circuit.

Wiring Diagram:

Step 1:

Step 2 - 3:

Step 4 - 5:

Step 6 - 7:

INSPECTION PROCEDURE

CAUTION: Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag deployment.
a. Turn the power switch off.
b. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
c. Disconnect the connectors from the airbag ECU assy.
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.