Component Inspection

INSPECTION

1. INSPECT MASS AIR FLOW METER




a. Check the output voltage.
1. Apply battery voltage across terminals 3 (+B) and 4 (E2G).
2. Connect the positive (+) tester prove to terminal 5 (VG), and the negative (-) tester prove to terminal 4 (E2G).
3. Blow air into the MAF meter, and check if the voltage fluctuates.

b. Check the resistance.
Using an ohmmeter, measure the resistance between terminals 2 (THA) and 1 (E2).

Resistance:
12.5 to 16.9 kOhms at -20 °C (-4 °F)
2.19 to 2.67 kOhms at 20 °C (68 °F)
0.50 to 0.68 kOhms at 60 °C (140 °F)

2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY




a. Check the resistance.
Using an ohmmeter, measure the resistance between the terminals.
If the result is not as specified, replace the camshaft timing oil control valve.




b. Check the operation.
Apply battery voltage across the terminals, and check that the spool valve operates.

NOTE: Check that the spool valve is not stuck.

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

3. INSPECT THROTTLE W/MOTOR BODY ASSY




a. Disconnect the throttle control motor connector.
b. Using an ohmmeter, measure the motor resistance between terminals M+ and M-.

Motor resistance: 0.3 to 100 Ohms at 20 °C (68 °F)

4. INSPECT KNOCK SENSOR







a. Check the resistance.
Using an ohmmeter, measure the resistance between the terminals.

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

5. INSPECT ENGINE COOLANT TEMPERATURE SENSOR




a. Check the resistance.
Using an ohmmeter, measure the resistance between the terminals.

Resistance:
2.32 to 2.59 kOhms at 20 °C (68 °F)
0.310 to 0.326 kOhms at 80 °C (176 °F)

NOTE: If inspecting the water temperature sensor in water, prevent water from flowing into the terminals. After inspection, wipe the water off the sensor.

6. INSPECT CIRCUIT OPENING RELAY







a. Check the resistance.
Using an ohmmeter, measure the resistance between the terminals.

If the result is not as specified, replace the circuit opening relay.

7. INSPECT EFI RELAY







a. Check the resistance.
Using an ohmmeter, measure the resistance between the terminals.

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