B1000

DTC B1000 AIRBAG ECU ASSY MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The airbag ECU assy consists of the airbag sensor, the safing sensor, the drive circuit, the diagnostic circuit, the ignition control, etc. If the airbag ECU assy receives signals from the airbag sensor, it determines whether or not the SRS should be activated. B1000 is recorded when a malfunction is detected in the airbag ECU assy.

HINT: When a trouble code is displayed simultaneously with B1000, repair the malfunction indicated by this code (except B1000) first.

Wiring Diagram:

Step 1:

Step 2 - 3:

Step 4 - 5:

Step 6 - 7:

Step 8 - 9:

Step 10 - 11:

Step 12 - 13:

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.