Pinpoint Test A: The Air Bag Indicator Is Illuminated Continuously
Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS)
Pinpoint Tests - Supplemental Restraint System (SRS)
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 after the ignition is ON. 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 the air bag warning indicator will illuminate and remain illuminated for the rest of each key cycle until the fault is no longer detected. The Restraints Control Module (RCM) communicates to the IC module via 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:
- IC module
- RCM
PINPOINT TEST A: THE AIR BAG WARNING INDICATOR IS ILLUMINATED CONTINUOUSLY
WARNING: If a vehicle has been in a crash, inspect the restraints control module (RCM) and the impact sensor (if equipped) mounting areas for deformation. If damaged, restore the mounting areas to the original production configuration. A new RCM and sensors must be installed whether or not the air bags have deployed. Failure to follow these instructions may result in serious personal injury or death in a crash.
WARNING: Always tighten the fasteners of the restraints control module (RCM) and impact sensor (if equipped) to the specified torque. Failure to do so may result in incorrect restraint system operation, which increases the risk of personal injury or death in a crash.
NOTE: 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
If DTCs are retrieved, GO to the DTC Charts for diagnostic direction. [1][2]Diagnostic Trouble Code Descriptions
Do not clear any DTCs until all DTCs have been resolved.
No
If the RCM does communicate with the scan tool, REFER to Instrumentation, Message Center, and Warning Chimes Testing and Inspection to diagnose the IC module concern.
If the RCM does not communicate with the scan tool, REFER to Module Communications Network Testing and Inspection to diagnose the no communication concern.
Do not clear any DTCs until all DTCs have been resolved.
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