Ford Mustang (1999-2004) Service Manual: Battery (Diagnosis and Testing)

Special Tool(s)

Micro 490 Digital Battery Analyzer 162-00004

Inspection and Verification

1. Verify the customer concern by operating the system.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical Electrical

  • Battery

  • Battery mounting
  • Battery cables
  • Battery posts

3. If an obvious cause for a concern is found, correct the cause before proceeding to the next step.

4. If the fault is not visually evident, proceed to the pinpoint test.

Pinpoint Tests

PINPOINT TEST A: BATTERY CONDITION TEST

Test Step Result / Action to Take
A1 TEST BATTERY CONDITION Yes

Does the meter read, GOOD BATTERY? RETURN the battery to service. REFER to Section.

Does the meter read, GOODRECHARGE? CHARGE the battery and RETURN to service.

REFER to Section.

Does the meter read, CHARGE & RETEST? Fully CHARGE the battery and RETEST

No

Does the meter read, REPLACE BATTERY? INSTALL a new battery.

Does the meter read, BAD CELLREPLACE? INSTALL a new battery.
NOTE: No battery with a red test-eye should be replaced. The red eye only means the battery is discharged, not necessarily defective. NOTE: Failure to fully charge the battery before retesting may cause false readings.
  • Verify the battery condition using the Battery Analyzer.
  • Is the battery OK?
    Battery and Cables
    Vehicles are equipped with a 12 volt maintenance-free battery that contains a built-in hydrometer. The hydrometer eye indication is as follows: A green dot means the battery is OK. A yel ...

    Battery Disconnect
    WARNING: Batteries normally produce explosive gases which can cause personal injury. Therefore, do not allow flames, sparks or lighted substances to come near the battery, always shield you ...

    Other materials:

    Installation
    Convertible 1. For installation of the back window glass, refer to Section. Coupe CAUTION: After installing the urethane installed back window glass, the vehicle should not be driven until the urethane adhesive has cured. The curing time at tempe ...

    System menu features
    Your system offers many menu features, such as allowing you to adjust the touchscreen brightness, time and language, feedback and system settings. You can access these options by pressing the MENU hard button. ...

    Motorcraft part numbers
    1For spark plug replacement, see your authorized dealer. See Scheduled Maintenance Information for the appropriate intervals for changing the spark plugs. Replace the spark plugs with ones that meet Ford material and design specifications for your vehicle, ...