B1662

DTC B1662 INDICATOR LAMP CIRCUIT MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The indicator lamp circuit consists of the airbag sensor assembly center and the combination meter assembly.

When the airbag sensor assembly center detects a malfunction in the SRS airbag system, the SRS warning light comes on to inform the driver.

It also comes on when the source voltage drops, and automatically goes off in approximately 10 seconds after the source voltage returns to normal (DTC is not stored).

The SRS warning light comes on for 6 seconds after the ignition switch is turned on (IG) and goes off in the system is normal.

When an open circuit is detected, such as when the connector between the combination meter assembly and the airbag sensor assembly center is disconnected, the SRS warning light remains on even when approximately 6 seconds elapsed after the ignition switch is turned on (IG).

DTC B1662/45 is recorded when a malfunction is detected in the indicator lamp circuit.

HINT: When DTC B1662/45 and B1000/31 are output simultaneously, perform the troubleshooting for DTC B1662/45 first.

Wiring Diagram:

Step 1 - 3:

Step 4:

INSPECTION PROCEDURE