Pinpoint Test K : The Airbag Warning Indicator Is Never Or Always On

Normal Operation and Fault Conditions
If the airbag indicator lamp request message is missing for less than 2 seconds, the IPC defaults the airbag warning indicator to its last state (on or off) based upon the last message received.

If the BCM doesn't receive the airbag indicator lamp request message from the RCM, the BCM sets DTC U0151:00.

If the IPC doesn't receive the airbag indicator lamp request message or if the message is deemed invalid for 2 seconds or longer, the IPC sets DTC U0151:00 and defaults the airbag warning indicator on.

See Airbag Warning Indicator. REFER to: Instrument Panel Cluster (IPC) - System Operation and Component Description .

Possible Sources
- BCM concern
- SRS concern
- RCM
- IPC

K1 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to DTC Chart: IPC .

No GO to K2

K2 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the BCM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes REFER to: Body Control Module (BCM) .

No GO to K3

K3 CARRY OUT THE IPC (INSTRUMENT PANEL CLUSTER) INDICATOR LAMP CONTROL ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL

Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).

Select the IPC airbag warning indicator (AIRBAG_LMP) PID.

Command the airbag warning indicator on then off while observing the airbag warning indicator.

Does the airbag warning indicator illuminate when commanded on and turn off when commanded off?

Yes	If the airbag warning indicator is never on, the system is operating correctly. If the airbag warning indicator is always on, DIAGNOSE the SRS. REFER to: Airbag Supplemental Restraint System (SRS) .

No	Refer to IPC Guided Routine Testing .