Warning Lamp Behavior
after Ignition On |
As soon as the operating
voltage is applied to the SRSCM ignition input, the SRSCM activates the
warning lamp for a LED lamp check.
The lamp shall turn on
for 6 seconds during the initialization phase and be turned off afterward.
However, in order to
indicate the driver, the warning lamp shall turn on for 6 seconds and off
for one second then on continuously after the operating voltage is applied
if any active fault exists.
1. |
Active fault.

|
2. |
Normal or historical faults only
exist.

|
3. |
When turning the ignition switch ON during
variant coding (EOL) mode, the airbag warning lamp is turned on and
blinks at intervals of 1 second till the coding is
completed.
In case the variant coding is normally
completed, the airbag warning lamp is turned on for 6 seconds, and
then turned off. Otherwise the airbag warning lamp continuously
blinks at intervals of 1 second.
(1) |
In case the variant coding is normally
completed

|
(2) |
In case the variant coding is not
completed

|
When there is active fault in airbag system or
SRSCM internal fault, the variant coding (EOL) can’t be completed.
In this case, do the variant coding (EOL) procedure again after
troubleshooting with the GDS. |
SRSCM Independent Warning Lamp
Activation
There are certain fault
conditions in which the SRSCM cannot function and thus cannot control the
operation of the standard warning lamp. In these cases, the standard
warning lamp is directly activated by appropriate circuitry that operates
independently of the SRSCM. These cases are:
1. |
Loss of battery supply to the SRSCM : warning
lamp turned on continuously. |
2. |
Loss of internal operating voltage : warning
lamp turned on continuously. |
3. |
Loss of Microprocessor operation : warning
lamp turned on continuously. |
4. |
SRSCM not connected : warning lamp turned on
continuously.
|
Telltale Lamp Activation
The Telltale Lamp
indicates the Passenger Airbag(PAB) enabled and disabled status based on
occupant status of passenger seat. If the passenger seat is empty or
occupied with child (or child seat), the Passenger Airbag is disabled and
the Telltale Lamp is turned ON to inform the driver that the PAB is
disabled. As soon as operating voltage is applied to the SRSCM ignition
input, the SRSCM activates telltale lamp prove out. PODS will send an
indeterminate status to the SRSCM as a default setting for passenger
airbag deployment during the prove out period.
After ignition on,
telltale lamp will turn on for 4 seconds and turn off for 3 seconds during
the initialization phase and be turned NO afterward until receipt of valid
enabled message from PODS system.
