Warning Lamp Activation

WARNING LAMP ACTIVATION

The warning lamp, during the initialization phase, can be in one of three cases:

(CASE 1) A CRASH ENTRY EXISTS OR THERE IS AN ACTIVE SYSTEM FAULT PRESENT.

The warning lamp is continuously illuminated when (after the SRSCM completes initialization) a crash entry (designated by crash record locked) exists or if a qualified restraint system fault exists. In this case, the initialization is shown with a historic fault and therefore the warning lamp is on during initialization.
a. Continuously illuminated for 6 seconds after ignition on
b. Turn-off for 2 seconds




c. Warning lamp will continuously illuminate after above procedures a) and b) are completed

(CASE 2) ONE OR MORE HISTORIC FAULTS HAVE BEEN RECORDED (NO ACTIVE FAULTS)

The warning lamp is turned off after the SRSCM completes initialization.
a. Continuously illuminated for 6 seconds after ignition on
b. Turn-off for 2 seconds




c. Turn-off for remainder of key cycles unless a crash or active fault is detected.

(CASE 3-1) NORMAL OPERATION (NO ACTIVE RESTRAINT SYSTEM FAULT, NO HISTORICAL FAULTS)




The SRSCM will flash warning lamp at 1 Hz (50% duty cycle) if there are no active faults and no historic faults. If a fault is qualified during the 1 Hz flashing, the SRSCM will finish the 6 seconds flash, turn off the warning lamp for 2 seconds and then turn the warning lamp on.

(CASE 3-2) NORMAL OPERATION (LOW/HIGH VOLTAGE FAULT, NO ACTIVE RESTRAINT SYSTEM FAULT, NO HISTORICAL FAULTS)




The SRSCM will flash warning lamp at 1 Hz (50% duty cycle) if there was a low/high voltage fault but there were no active faults and no historic faults. If a fault is qualified during the 1 Hz flashing, the SRSCM will finish the 6 second flash, turn off the warning lamp for 2 seconds and then turn the warning lamp on.