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 719 (ENGINE COOLING SYSTEM (2AZ-FE))COOLING FAN SYSTEMINSPECTION

2004 Toyota Matrix XR, FWD, Standard

Cooling Fan System: Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection

WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RELAY (FAN NO. 1, FAN NO. 3)
1. Check the resistance of the relay.
  
  Fig 1: Checking Resistance Of Relay (FAN NO. 1, FAN NO. 3)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Relay Resistance Chart (FAN NO. 1, FAN NO. 3)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the result is not as specified, replace the relay.
INSPECT RELAY (FAN NO. 2)
1. Check the resistance of the relay.
  
  Fig 3: Checking Resistance Of Relay (FAN NO. 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 4: Relay Resistance Chart (Fan No. 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the result is not as specified, replace the relay.

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Check the resistance between terminals 1 and 2.

Fig 5: Checking Resistance Between Terminals 1 & 2
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

RESISTANCE CHECK

Condition	Specified Condition
Approx. 20°C(68°F)	2.29 to 2.6 kΩ.
Approx. 80°C(176°F)	0.300 to 0.327 kΩ

If the result is not as specified, replace the sensor.

NOTE: When checking the ECT sensor in the water, the terminals should be kept dry. After the check, dry the sensor.

RENDER: 1.0x

NO RELATED

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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.