Pinpoint Test 20: The Air Bag Warning Indicator Is Never/Always On

PINPOINT TEST 20: THE AIR BAG WARNING INDICATOR IS NEVER/ALWAYS ON

Normal Operation

The instrument cluster receives the supplemental restraint system (SRS) status from the restraints control module (RCM) over the high speed controller area network (HS-CAN) communication bus. The instrument cluster illuminates the air bag warning indicator upon receipt of a message from the RCM.
DTC U0151 (Lost Communication With The Restraints Control Module [RCM]) - is a continuous DTC that sets in the instrument cluster if a missing message from the RCM occurs and the instrument cluster defaults the air bag warning indicator on.

This pinpoint test is intended to diagnose the following:
- RCM
- Instrument cluster

Step 1-Step 3:

Step 4: