Malfunction Lamp / Indicator: Description and Operation

SRSCM INDEPENDENT LAMP ACTIVATION

The SRS malfunction indicator lamp (MIL) is located on the instrument cluster to provide information about SRS operating conditions.

There are certain fault conditions in which the SRSCM (SRS Control Module) cannot function and thus cannot control the operation of the lamp. In these cases, the lamp is directly activated by circuitry that operates independently of the SRSCM, as follows:

MIL Operating Method:

1. Loss of ignition voltage supply to the SRSCM: lamp turns on continuously.
2. Loss of internal operating voltage: lamp turns on continuously.
3. SRSCM not connected: lamp turns on through shorting bar in wiring harness connector.