DTC 43: SRS Warning Light Drive Circuit System Fault 1 (Light does not Illuminate.)/SRS Warning Light Drive Circuit System Fault 1 (Light does not Switch off.) DTC 44: SRS Warning Light Drive Circuit System Fault 2

CIRCUIT OPERATION
Power for the SRS warning light is supplied from the ignition switch (IG₁ ) circuit.
The SRS warning light illuminates when the ignition switch is turned "ON," and goes out after approximately 7 seconds if there is not a malfunction in the SRS system.
The SRS-ECU judges how severe a collision is by detecting signals from the left and right front impact sensors and the analog G-sensor. If the impact is over a predetermined level, the SRS-ECU outputs an ignition signal. At this time, if the safing G-sensor is on, the SRS air bag will inflate.

DTC SET CONDITIONS
This DTC is set when an open circuit is detected for a continuous period of 5 seconds while the SRS-ECU is monitoring the SRS warning light and the light is OFF. (transistor OFF.) However, if the vehicle condition returns to normal, DTC 43 will be automatically erased, and the SRS warning light will go out.
This DTC is set when a short to ground occurs in the harness between the SRS warning light and SRS-ECU while the SRS-ECU is monitoring the light and the light is ON.
This DTC is set under one of the following cases while the SRS-ECU is monitoring the warning light drive circuit:
When a short circuit occurs in the warning light drive circuit.
When a malfunction is detected in the output transistor inside the SRS-ECU.
However, if the vehicle returns to normal condition, DTC 44 will be automatically erased, and the SRS warning light will go out.

TROUBLESHOOTING HINTS
Damaged wiring harnesses of connectors
Blown bulb (for DTC 43)
Malfunction of the SRS-ECU
Malfunction of the combination meter (for DTC 43)