B1801

DTC B1801 OPEN IN D SQUIB CIRCUIT

CIRCUIT DESCRIPTION

DTC Detecting Conditions:

The D squib circuit consists of the airbag sensor assembly center, the spiral cable sub-assembly and the horn button assembly.

The circuit signals the SRS to deploy when airbag deployment conditions are met.

These DTCs are set when a malfunction is detected in the D squib circuit.

Wiring Diagram:

Step 1:

Step 2 - 4:

Step 5 - 6:

Step 7 - 9:

Step 10 - 12:

Step 13 - 14:

Step 15 - 17:

Step 18:

Step 19:

Step 20:

Step 21 - 22:

Step 23:

Step 24:

Step 25:

INSPECTION PROCEDURE

CAUTION: 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 airbag sensor assembly center 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 airbag sensor assembly center.
d. Disconnect the connectors from the horn button assembly.
e. Disconnect the connector from the front passenger airbag assembly.

HINT: Skip steps (f) to (i) if side and curtain shield airbags are not fitted.

f. Disconnect the connector from the front seat airbag assembly LH.
g. Disconnect the connector from the front seat airbag assembly RH.
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.