Ford 2003 Mustang Workshop Manual page 4026

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a
DTC: Diagnostic Trouble Code, retrieved using a scan tool.
b
LFC: Lamp fault code, flashed on air bag indicator.
c
Tone will sound only if additional DTCs are present.
Inspection and Verification
1. Verify the customer concern by checking the air bag indicator in the instrument cluster. Refer to
Prove Out the System in this section.
2. Visually inspect for obvious signs of mechanical and electrical damage using the following chart:
Visual Inspection Chart
Damaged restraints control module (RCM) bracket
3. If the concern is not visually evident, use the scan tool to retrieve diagnostic trouble codes
(DTCs) and perform the on-demand self test.
4. WARNING: The restraint system diagnostic tool is for restraint system service only.
Remove from vehicle prior to road use. Failure to remove could result in injury and
possible violation of vehicle safety standards.
If the on-demand self test is passed and no DTCs are retrieved, GO to
5. If DTCs are retrieved, proceed to the Restraints Control Module (RCM) Diagnostic Trouble
Code (DTC) Priority Table.
Symptom Chart
Symptom Chart
Condition
Air bag warning indicator is
illuminated continuously
Air bag indicator flashing
Audible tone — DTCs
retrieved
No communication with the
No Communication with the Restraints Control Module
Mechanical
Possible Sources
Circuitry.
Worn or damaged
connector component.
RCM.
Instrument cluster.
Air bag SRS system
fault.
Air bag SRS system
fault.
Scan Tool.
Go To Pinpoint
Test P
Electrical
Open fuse(s)
Damaged wiring harness
Loose or corroded connectors
Circuitry open/shorted
Symptom Chart
Action
Go To Pinpoint
Test A .
REFER to DTC
Priority Table.
Go To Pinpoint
Test N .
Go To Pinpoint
Test O .
Go To Pinpoint
.
.