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HOMESERVICE MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 239 (CHARGING SYSTEM - GENERATORS & REGULATORS)CHARGING SYSTEMON-VEHICLE INSPECTION
2004 Toyota Celica GT, Standard

On-Vehicle Inspection

2004 Toyota Celica GT, StandardSECTION On-Vehicle Inspection
WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check battery electrolyte level of each cell  . See Fig 1.

    If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.

    Fig 1: Checking Electrolyte Level
    G01128065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Except maintenance-free battery, check battery specific gravity of each cell.  . See Fig 2.

    Standard specific gravity  : 1.25-1.29 at 20°C (68°F)

    If the specific gravity is less than specification, charge the battery.

    Fig 2: Measuring Specific Gravity Of Electrolyte
    G01128066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. For maintenance-Free Battery, check battery voltage  :
    1. After having driven the vehicle and in the case that 20 minutes have not passed after having stopped the engine, turn the ignition switch ON and turn on the electrical system (headlight, blower motor, rear defogger etc.) for 60 seconds to remove the surface charge.
    2. Turn the ignition switch OFF and turn off the electrical systems.
    3. Measure the battery voltage between the negative (-) and positive (+) terminals of the battery. See Fig 3.
    Fig 3: Measuring Battery Voltage
    G01128067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Standard voltage  : 12.5-12.9 V at 20°C (68°F).

    If the voltage is less than specification, charge the battery.

    Check the indicator as shown in the illustration. See Fig 4.

  4. Check battery terminals, fusible link and fuses  :
    1. Check that the battery terminals are not loose or corroded.
    2. Check the fusible link and fuses for continuity.
    Fig 4: Identifying Battery Indicator
    G01128068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. NOTE: A belt tensioner is used, so checking the belt tension is not necessary.
    • Cracks on the rib side of a drive belt are considered acceptable. If the drive belt has chunks missing from the ribs, it should be replaced. See Fig 5.
    • The drive belt tension can be released by turning the belt tensioner counterclockwise. The pulley bolt for the belt tensioner has a left-hand thread.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.