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:

    Retractor - Front Seat Safety Belt, Convertible
    Special Tool(s) Torx Bit, Safety Belt Bolt 501-010 (T77L-2100-A) Removal 1. Remove the quarter trim panel (31012). For additional information, refer to Section. 2. Remove the nut and bolts and safety belt retractor. Installation NOTE: Make ...

    Mass Air Flow (MAF) Sensor - Cobra
    Removal and Installation 1. Disconnect the intake air temperature (IAT) sensor. 2. Disconnect the breather hose. 3. Disconnect the vacuum hose. 4. Loosen the clamps and remove the air cleaner outlet pipe. 5. CAUTION: The mass air flow (MAF) sensor ho ...

    Automatic Transaxle/Transmission
    General Specifications a - MERCON V is not interchangeable at this time with the current MERCON fluids. Check the transmission fluid level indicator to determine the correct fluid and refer to the Workshop/Owner publication to determine the correct service ...