Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 49 (MANUAL A/C-HEATER SYSTEMS)COMPRESSOR AND MAGNETIC CLUTCHON-VEHICLE INSPECTION

2004 Toyota Matrix XR, FWD, Standard

On-Vehicle Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION On-Vehicle Inspection

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Set up manifold gauge set. See SET UP .
Start engine.
Inspect compressor for metallic sound.
1. Check if there is a metallic sound from the compressor when the A/C switch is on.
2. If metallic sound is not heard, replace the compressor assembly.
Inspect refrigerant pressure. See step 2 under ON-VEHICLE INSPECTION.
Stop engine.
Inspect visually for leakage of refrigerant from safety seal.
1. Using a gas leak detector, check for leakage of refrigerant. If there is any leakage, replace the compressor assembly.
Take down manifold gauge set. See TAKE DOWN .
Check for leakage of grease from clutch bearing.
Check for signs of oil on pressure plate.
1. If necessary, repair or replace.
Inspect magnetic clutch bearing for noise.
1. Start engine.
2. Check for abnormal noise from near the compressor when the A/C switch is OFF.
  If abnormal noise is being emitted, replace the magnetic clutch.
5VZ-FE engine: Inspect magnetic clutch operation.
1. Disconnect the connector.
2. Connect the positive (+) lead from the battery to terminal on the magnetic clutch connector and the negative (-) lead to the body ground.
  
  Fig 1: Inspecting Magnetic Clutch Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the magnetic clutch is energized.
  If operation is not as specified, replace the magnetic clutch.
2UZ-FE engine: Inspect magnetic clutch operation.
1. Disconnect the connector.
2. Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to the body ground.
  
  Fig 2: Inspecting Magnetic Clutch Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Check that the magnetic clutch is energized.
  If operation is not as specified, replace the magnetic clutch.
2UZ-FE engine: Inspect compressor lock sensor resistance.
1. Disconnect the connector.
2. Measure resistance between terminals 1 and 2.
  
  Fig 3: Measuring Resistance Between Terminals 1 & 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard resistance: 65-125 Ω at 20° C (68° F)
  
  If resistance is not as specified, replace the compressor.

RENDER: 1.0x

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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.