Pinpoint Test A: The Air Bag Indicator Is Illuminated Continuously

Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)

Pinpoint Tests

Pinpoint Test A: The Air Bag Warning Indicator is Illuminated Continuously

Refer to Wiring Diagram Set 46, Supplemental Restraint System for schematic and connector information. Diagrams By Number

Normal Operation

During normal operation, the Instrument Cluster (IC) module will illuminate the air bag warning indicator continuously for 6 seconds and then turn off. If the Supplemental Restraint System (SRS) is fault free, the air bag warning indicator will remain off. 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 warning 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:
- Wiring, terminals or connectors
- IC module
- RCM



PINPOINT TEST A: THE AIR BAG WARNING INDICATOR IS ILLUMINATED CONTINUOUSLY

WARNING: Never probe the electrical connectors on air bag, Safety Canopy(R) or side air curtain modules. Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

WARNING: Never disassemble or tamper with safety belt buckle/retractor pretensioners or adaptive load limiting retractors or probe the electrical connectors. Failure to follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors which increases the risk of serious personal injury or death.

NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.

Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test. Inspection and Verification

NOTE: SRS components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS.

NOTE: The SRS must be fully operational and free of faults before releasing the vehicle to the customer.

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A1 RETRIEVE RCM DTCs


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM.
- Were any DTCs retrieved on-demand during self-test?

Yes
GO to the Supplemental Restraint System (SRS) DTC Chart for diagnostic direction. Diagnostic Trouble Code Tests and Associated Procedures

Do not clear any DTCs until all DTCs have been resolved.

No
If the RCM does communicate with the scan tool, REFER to Instrument Panel, Gauges and Warning Indicators to diagnose the IC module concern.

If the RCM does not communicate with the scan tool, REFER to Information Bus to diagnose the no communication concern.

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