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 MANUALSTOYOTA2005MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROL SYSTEMSFI SYSTEM (2ZZ-GE)INSPECTION

2005 Toyota Matrix XR, FWD, Standard

SFI System (2ZZ-GE): Inspection

2005 Toyota Matrix XR, FWD, StandardSECTION Inspection

INSPECT INTAKE AIR FLOW METER SUB-ASSY

Check the operation.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Using a voltmeter, connect the positive (+) tester prove to terminal 3 (VG) and the negative (-) tester prove to terminal 2 (E2G).
3. Blow air into the mass air flow meter, then check that the voltage fluctuates.
  
  Fig 1: Checking Battery Voltage Using Voltmeter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
If the voltage does not fluctuate, replace the mass air flow meter.

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

RESISTANCE SPECIFICATION (1 OF 7)

Tester Connection	Specified Condition
4(THA)-5(E2)	13.6 to 18.4 kΩ at-20oC(-4oF)
4(THA)-5(E2)	2.21 to 2.69 kΩ at 20oC (68oF)
4(THA)-5(E2)	0.493 to 0.667 kΩ at 60°C (140°F)

Fig 2: Measuring Resistance Between Terminals Using Ohmmeter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the mass air flow meter.

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

RESISTANCE SPECIFICATION (2 OF 7)

Tester Connection	Specified Condition
1 (+B)-2(GND)	6.9 to 7.9 kΩ at 20°C (68°F)

Fig 3: Inspecting Camshaft Timing Oil Control Valve Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the camshaft timing oil control valve.

Check the operation.
1. Apply battery voltage across the terminals, then check that the spool valve operates.
  
  Fig 4: Checking Battery Voltage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Check that the spool valve is not stuck.

HINT:

The spool valve may not return if foreign objects are caught in the spool valve. It may cause subtle pressure leaks to the advance side, and a DTC may be set.

INSPECT THROTTLE BODY ASSY
1. Check the throttle body.
  1. Check that the throttle valve shaft is not rickety.
  2. Check that all ports are not clogged.
  3. Check that the throttle valve opens and closes smoothly.
  4. Check that there is no clearance between the throttle stop screw and throttle lever at the throttle valve closed position.
    
    Fig 5: Identifying Throttle Liver
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Do not touch the throttle stop screw.

INSPECT E.F.I. THROTTLE POSITION SENSOR

Check inspection.
1. Disconnect the throttle position sensor connector.
2. Using an ohmmeter, measure the resistance between terminals VC and E2.
  Resistance: 2.5 to 6.0 kΩ
3. Check the resistance variation between terminals VTA and E2.
  
  Fig 6: Identifying Position Sensor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Variation of resistance:

The resistance value Increases in proportion to the throttle lever opening value.

HINT:

RESISTANCE SPECIFICATION (3 OF 7)

Throttle valve Movement	Resistance
Fully close	0.2 to 5.7kΩ
Fully open	2.0 to 10.2kΩ

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

INSPECT E.F.I. ENGINE COOLANT TEMPERATURE SENSOR

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals. Standard:

RESISTANCE SPECIFICATION (4 OF 7)

Tester Connection	Specified Condition
1(E2)-2(THW)	2.32 to 2.59 kΩ at 20oC (68°F)
1(E2)-2(THW)	0.310 to 0.326 kΩ at 80°C (176 °F)

Fig 7: Inspecting E.F.I. Engine Coolant Temperature Sensor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to intrude into the terminals. After checking, wipe up water on the engine coolant temperature sensor.

If the result is not as specified, replace the engine coolant temperature sensor.

INSPECT KNOCK SENSOR

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

RESISTANCE SPECIFICATION (5 OF 7)

Tester Connection	Specified Condition
1 (Ground) -2 (Output)	120 to 280 kΩ at 20°C(68°F)

Fig 8: Inspecting Knock Sensor Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT E.F.I. CIRCUIT OPENING RELAY ASSY

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

RESISTANCE SPECIFICATION (6 OF 7)

Tester Connection	Specified Condition
3-5	10kΩ or higher
3-5	Below 1 Ω (Apply battery voltage to terminal 1 and 2)

Fig 9: Inspecting E.F.I. Circuit Opening Relay Assy

If the result is not as specified, replace the E.F.I. circuit opening relay assy.

INSPECT E.F.I ECU RELAY

Check the resistance.

Using an ohmmeter, measure the resistance between the terminals.

Standard:

RESISTANCE SPECIFICATION (7 OF 7)

Tester Connection	Specified Condition
3-5	10kΩ or higher
3-5	Below 1 Ω (Apply battery voltage to terminal 1 and 2)

Fig 10: Inspecting E.F.I ECU Relay

If the result is not as specified, replace the E.F.I ECU relay.

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.