Ford 2003 Mustang Workshop Manual page 4028

SECTION 501-20B: Supplemental Restraint System
DIAGNOSIS AND TESTING
Pinpoint Tests — Air Bag Supplemental Restraint System
(SRS)
Special Tool(s)
73III Automotive Meter
105-R0057 or equivalent
Diagnostic Tool, Restraint
System
418-F088 (105-R0012)
Worldwide Diagnostic System
(WDS)
418-F224,
New Generation STAR (NGS)
Tester
418-F052, or equivalent scan
tool
Restraint System Diagnostic Tool Warning
WARNING: This 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.
Pinpoint Test Note
Do not carry out any pinpoint test unless directed by the Symptom Chart.
Pinpoint Test A: The Air Bag Warning Indicator Is Illuminated Continuously — RCM
Disconnected, Inoperative or Lost/Low Ignition Feed
Normal Operation
NOTE: During normal operation the air bag indicator will be lit continuously for 6 seconds after the
ignition switch is placed in the RUN position and after five cycles of a lamp fault code (LFC) if a fault
exists. Be sure to cycle the ignition switch and look for a 6 second indicator prove-out without LFCs.
The restraints control module (RCM) will communicate diagnostic trouble codes (DTCs) to the scan
tool through the data link connector (DLC). If the scan tool displays NO COMMUNICATION when
retrieving continuous DTCs,
Possible Causes
Go To Pinpoint Test P
2003 Mustang Workshop Manual
to troubleshoot the system.