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:

    Disc Check
    Special Tool(s) Brake/Automobile Brake Drum System with Vacuum 164-R3622 or equivalent Dial Indicator/Magnetic Base 100-D002 (D78P-4201-B) or equivalent WARNING: Dust and dirt present on wheel brake and clutch assemblies may ...

    Column
    Removal and Installation All vehicles 1. Disconnect the battery ground cable and wait at least one minute to allow the depletion of the restraint system backup power supply. 2. WARNING: To avoid the risk of serious personal injury, follow all warnings, c ...

    Throttle Position (TP) Sensor
    Removal NOTE: The 3.8L engine is shown; the 4.6L (2V) is similar. 1. Disconnect the battery ground cable. For additional information, refer to Section. 2. Remove the throttle position (TP) sensor. Disconnect the connector. Remove the screws, ...