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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1112 (Instrument Cluster (Ic), Message Center, And Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC) and Warning Chimes >> Pinpoint Tests >> Pinpoint Test P: The Air Bag Warning Indicator Is Never/Always On >> Normal Operation

Normal Operation

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The instrument cluster (IC) receives the supplemental restraint system (SRS) status from the restraints control module (RCM) over the high speed controller area network (HS-CAN) communication bus. If a SRS concern is detected, the RCM sets a DTC and sends a message to the instrument cluster (IC) to turn on the air bag warning indicator. If the SRS status message is missing or is deemed invalid for more than 5 seconds, the instrument cluster (IC) sets DTC U0151 and defaults the air bag warning indicator on.

This pinpoint test is intended to diagnose the following:

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