WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT MASS AIR FLOW METER

Output voltage inspection.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G.
3. Blow air into the MAF meter, and check that the voltage output fluctuates.
Resistance inspection.
1. Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).

Resistance:

TERMINAL AND RESISTANCE TEMPERATURE

Terminals	Resistance	Temperature
THA - E2	13.6 to 18.4 kΩ	-20°C (-4°F)
THA - E2	2.21 to 2.69 kΩ	20°C (68°F)
THA - E2	0.493 to 0.667 kΩ	60°C (140°F)

Fig 1: Resistance To Temperature Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
1. Resistance inspection.
  1. Using an ohmmeter, measure the resistance between the terminals.
  Resistance: 6.9 to 7.9 Ω at 20°C (68°F)
2. Movement inspection.
  1. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead to terminal 2, and check the movement of the valve.
  Fig 2: Connecting Battery To Terminal 1 & 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Confirm the valve moves freely and does not stick in any position.

HINT:

Dirt or foreign objects in the oil line cause the subtle pressure leaks in the valve. The pressure leak will cause the camshaft to advance. This condition will usually set a DTC.

INSPECT ACCELERATOR PEDAL ROD ASSY

Resistance inspection
1. Using an ohmmeter, measure the resistance between the terminals.

Resistance:

ACCELERATOR PEDAL ROD

Terminal	Resistance
3 (VPA2) - 5 (EP1)	5.0 kΩ or less
6 (VPA1) - 2 (EP2)	5.0 kΩ or less
4 (VCP1) - 5 (EP1)	2.25 to 4.75 kΩ
1 (VCP2) - 2 (EP2)	2.25 to 4.75 kΩ

Fig 3: Measuring Resistance Between Accelerator Pedal Rod

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT THROTTLE BODY ASSY

Resistance inspection
1. Using an ohmmeter, measure the resistance between the terminals.

Resistance:

TERMINAL AND RESISTANCE TEMPERATURE

Terminals	Resistance	Temperature
2 (M+) - 1 (M-)	0.3 to 100 Ω	20°C (68°F)

Fig 4: Measuring Resistance Between Throttle Body

INSPECT E.F.I. ENGINE COOLANT TEMPERATURE SENSOR
1. Resistance inspection.
  1. Using an ohmmeter, measure the resistance between each terminal.
  Resistance:
  - 2.32 to 2.59 kΩ at Approx. 20°C (68°F)
  - 0.310 to 0.326 kΩ at Approx. 80°C (126°F)
NOTE: While checking the engine coolant temperature sensor in water, be careful not to allow water to go into the terminals, and after checking, dry the sensor.

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.

Safety Warning

SFI System: Inspection

Use the Manual With the Right Hardware

When to See a Mechanic

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