Pinpoint Test A: The Air Bag Indicator Is Illuminated Continuously

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

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

Refer to Wiring Diagram Set 46 (Fusion/Milan/MKZ, Fusion Hybrid, Milan Hybrid, MKZ Hybrid), Supplemental Restraint System for schematic and connector information. Diagrams By Number

Normal Operation

During normal operation, the Instrument Panel Cluster (IPC) will illuminate the air bag warning indicator continuously for 6 seconds. 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) communicates to the IPC via the High Speed Controller Area Network (HS-CAN). The IPC will illuminate the air bag warning indicator based on messaging from the RCM or if there is no communication between the RCM and IPC.

This pinpoint test is intended to diagnose the following:

- IPC
- RCM


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

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: Always make sure the correct SRS component is being installed. Parts released for other vehicles may not be compatible even if they appear physically similar. Check the part number listed in the Ford Catalog Advantage(TM) to make sure the correct component is being installed. If an incorrect SRS component is installed, DTCs may set.

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 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 IPC concern.

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

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