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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1229 (Supplemental Restraint System) >> Diagnosis And Testing >> Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) >> Pinpoint Test - Restraints Control Module (RCM) >> Pinpoint Test A: The Air Bag Warning Indicator is Illuminated Continuously >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

During normal operation, the Instrument Cluster (IC) module will illuminate the air bag indicator continuously for 6 seconds after the ignition is placed in the ON position. If the Supplemental Restraint System (SRS) is fault free, the air bag warning indicator will turn off and remain off. If a fault is detected in the SRS  , the air bag warning indicator will illuminate and remain illuminated for the rest of the ignition cycle until the fault is no longer detected. The Restraints Control Module (RCM) will communicate to the IC  module via the High Speed Controller Area Network (HS-CAN). The IC  module will illuminate the air bag indicator based on messaging from the RCM  or if there is no communication between the RCM  and IC  module.

This pinpoint test is intended to diagnose the following: 

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