B1620
DTC B1620/21 Driver Side - Side Airbag Sensor Circuit MalfunctionDESCRIPTION
DTC Detecting Condition:
The side airbag sensor assembly LH consists of parts such as the safing sensor, the diagnostic circuit and the lateral deceleration sensor. The configuration of the side airbag sensor assembly RH is the same as that of the LH.
When the airbag sensor assembly center receives signals from the lateral deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1620/21 is set when a malfunction is detected in the side airbag sensor assembly (driver seat side) circuit.
DTC B1625/22 is set when a malfunction is detected in the side airbag sensor assembly (front passenger seat side) circuit.
Wiring Diagram:
INSPECTION PROCEDURE
NOTE: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary.
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 center airbag sensor assembly.
d. Disconnect the connectors from the steering pad.
e. Disconnect the connector from the front passenger airbag assembly.
f. Disconnect the connector from the front seat airbag assembly LH.
g. Disconnect the connector from the front seat airbag assembly RH.
HINT: Skip the following steps if side and curtain shield airbags are not fitted.
h. Disconnect the connector from the curtain shield airbag assembly LH.
i. Disconnect the connector from the curtain shield airbag 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.
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