Section 249 (Engine Control System (SFI) (2AZ-FE)): 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 MASS AIR FLOW METER

Check the output voltage.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Using a voltmeter, 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 fluctuates.
Measure the resistance between terminals 4 (THA) and 5 (E2).
Standard:

AIR FLOW METER CHECKING REFERENCE

Condition	Specified Condition
-20 °C (-4°F)	13.6 to 18.4 kΩ
20°C(68°F)	2.21 to 2.69 kΩ
60°C(140°F)	0.493 to 0.667 kΩ

If the result is not as specified, replace the MAF meter.

Fig 1: Inspecting Mass Air Flow Meter

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
1. Measure the resistance between the terminals.
  Standard: 6.9 to 7.9 Ω at 20°C (68°F)
  
  If the result is not as specified, replace the OCV assy.
2. Connect the battery's positive (+) lead to terminal 1 and negative (-) lead to terminal 2, and check the movement of the valve.
  
  Fig 2: Connecting Battery To Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: Confirm that the valve moves freely and does not become stuck in any position.

If necessary, replace the OCV assy.

If the valve cannot return properly because of foreign matter, a small pressure leak in the advanced direction may occur and a DTC will be output.

INSPECT ACCELERATOR PEDAL ASSY (ACCELERATOR PEDAL POSITION SENSOR)

Measure the resistance between the terminals.
Standard:

TESTER CONNECTION AND CONDITION-SPECIFICATION

Tester Connection	Specified Condition
2(VPA2)-3(EP1)	5.0 kΩ or less
5(VPA1)-1 (EP2)	5.0 kΩ or less
6(VCP1)-3 (EP1)	2.25 to 4.75 kΩ
4 (VCP2) - 1 (EP2)	2.25 to 4.75 kΩ

If the result is not as specified, replace the pedal assy.

Fig 3: Inspecting Accelerator Pedal Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT THROTTLE BODY ASSY

Measure the resistance between the terminals.
Resistance:

TERMINALS CONDITION AND RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
2 (M+) - 1 (M-)	20°C(68°F)	0.3 to 100 Ω
5 (VC) - 3 (E2)	20°C(68°F)	1.2 to 3.2kΩ

If the result is not as specified, replace the throttle body assy.

Fig 4: Inspecting Throttle Body Assy

INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Measure the resistance between the terminals.
Standard:

TERMINAL CONDITION AND RESISTANCE SPECIFICATION

Condition	Specified Condition
Approx. 20°C(68°F)	2.32 to 2.59 kΩ.
Approx. 80°C(176°F)	0.310 to 0.326 kΩ.

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

Fig 5: Inspecting Engine Coolant Temperature Sensor

NOTE: If checking the engine coolant temperature sensor in the water, keep the terminals dry. After the check, wipe the sensor dry.

INSPECT KNOCK SENSOR
1. Using an ohmmeter, measure the resistance between the terminals.
  Standard: 120 to 280 kΩ at 20°C (68°F)
If the result is not as specified, replace the sensor.

Fig 6: Measuring Resistance Between Terminals Using An Ohmmeter
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT RELAY (EFI, C/OPN)
1. Remove the EFI and C/OPN relays from the engine room J/B.
2. Using an ohmmeter, measure the resistance of the relay.
  Standard:
If the result is not as specified, replace the relay.

Fig 7: Inspecting Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 8: Relay Inspection Specification Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002