On-Vehicle Inspection
ON-VEHICLE INSPECTION1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
a. Check the operation.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the hand-held tester ON.
4. Start the engine and warm it up.
5. Select the menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1.
6. Operate the OCV using the hand-held tester, then check the engine speed.
If the operation is not as specified, check the camshaft timing oil control valve, wire harness and ECM.
2. INSPECT THROTTLE BODY ASSEMBLY
a. Listen to the throttle control motor operating sounds.
1. Turn the ignition switch to ON.
2. When pressing the accelerator pedal, listen to the running sounds of the motor. Make sure no friction noises come from the motor.
If friction noises exist, check the throttle body, wire harness and ECM.
b. Inspect the throttle position sensor.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the hand-held tester ON.
4. Select the menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / THROTTLE POS.
5. Depress the accelerator pedal. When the throttle valve is fully opened, check that the THROTTLE POS value is within the specified values.
Standard : 60 % or more
NOTE: When checking the standard throttle valve opening percentage, the transmission should be in the neutral position.
If the result is not as specified, check the throttle body, wire harness and ECM.
3. INSPECT ACCELERATOR PEDAL ASSEMBLY
a. Inspect the voltage.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the hand-held tester ON.
4. Select the menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ACCEL POS #1, ACCEL POS #2.
5. Operate the accelerator pedal, then check that of the ACCEL POS #1 and ACCEL POS #2 values are within the specified values.
If the result is not as specified, check the accelerator pedal, wire harness and ECM.
4. CHECK MASS AIR FLOW METER (MAF meter)
NOTE:
- Perform the MAF meter inspection by following the procedures below.
- Only replace the MAF meter when both the LONG FT#1 value and MAF value in the DATA LIST (with the engine stopped) are not within the normal operating range.
a. Perform confirmation driving pattern.
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. Turn the tester on.
4. Clear the DTCs.
5. Start the engine and warm it up with all accessory switches off (until the engine coolant temperature is 75 degrees C (167 degrees F) or more).
6 Drive the vehicle at 31 mph (50 km/h) or more for 3 to 5 minutes. *1
7. Allow the engine to idle for 2 minutes. *2
8. Perform steps *1 and *2 at least 3 times.
b. Read value using the hand-held tester (LONG FT#1).
1. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / LONG FT#1.
2. Read the values displayed on the tester.
Standard value:
Within -15 to +15 %
If the result is not within the specified range, perform the inspection below.
c. Read value using the hand-held tester (MAF).
NOTE:
- Turn off the engine.
- Perform the inspection with the vehicle indoors and on a level surface.
- Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
- During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.
1. Turn off the engine (do not run the engine).
2. Turn the ignition switch ON.
3. Turn the tester on.
4. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / PRIMARY / MAF.
5. Wait 30 seconds, and read the values on the hand- held tester.
Standard condition:
Less than 0.48 g/s
- If the result is not as specified, replace the MAF meter.
- If the result is within the specified range, inspect the cause of the extremely rich or lean air fuel ratio.