Ford Mustang (1999-2004) Service Manual: Inspection and Verification

1. Verify the customer's concern by operating the active restraint system to duplicate the condition.

2. Inspect to determine if any of the following mechanical or electrical concerns apply:

Visual Inspection Chart

Mechanical Electrical

  • Inspect the safety belt webbing for integrity.
  • Open fuse.
  • Bare, broken or disconnected wire.
  • Connector not tightly engaged.
  • Safety belt warning indicator lamp burned out or broken.

3. If the inspection reveals an obvious concern(s) that can be readily identified, repair as required.

With the exception of removing a twist from the safety belt webbing, do not attempt to repair a component of the safety belt system; new components must be installed.

4. If the concern remains after the inspection, determine the symptom. GO to Symptom Chart .

Symptom Chart

Condition Possible Sources Action
  • The safety belt warning chime does not operate, the safety belt warning indicator lamp is OK
  • Virtual image cluster (VIC).
  • Circuitry.
  • Driver seat module.
  • REFER to Section
  • The safety belt warning indicator lamp does not operate, the safety belt warning chime is OK
  • Burned-out bulb.
  • Circuitry.
  • Driver seat module.
  • REFER to Section
  • Neither the safety belt warning chime nor the safety belt warning indicator lamp operates
  • Safety belt buckle switch.
  • Driver seat module.
  • Circuitry.
  • REFER to Section
  • Excessive pressure on the occupant during normal wear, the webbing cannot be extracted, excessive slack in webbing does not retract
  • Front safety belt retractor and tongue.
  • Rear safety belt retractor and tongue.
  • Carry out the Functional Test. REFER to Component Test.

    INSTALL a new retractor and tongue if necessary
    Component Test
    Carry out the appropriate Functional Test(s) as determined in Inspection and Verification. Functional Test I (Buckle and Tongue) The safety belt buckle and tongue assembly must operate freely during ...

    Other materials:

    General information
    WARNING: Extended idling at high engine speeds can produce very high temperatures in the engine and exhaust system, creating the risk of fire or other damage. WARNING: Do not park, idle, or drive your vehicle on dry grass or other dry ground cover. The emissio ...

    Exhaust System Neutralizing
    WARNING: Exhaust gases contain carbon monoxide, which is harmful to health and potentially lethal. Repair exhaust system leaks immediately. Never operate the engine in an enclosed area. WARNING: Exhaust system components are hot. NOTE: Neutralize the exhau ...

    External Controls (Diagnosis and Testing)
    Refer to Wiring Diagrams Cell 37 , Shift Lock for schematic and connector information. Refer to Wiring Diagrams Cell 29 , Transmission Control for schematic and connector information. Special Tool(s) 73 Digital Multimeter 105-R0051 or equivalent ...