DTC Confirmation Procedure

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION: 

Before performing the following procedure, confirm that battery voltage is more than 11V at idle. 

Do you have CONSULT-III? 

YES: GO TO 2.

NO: GO TO  5.

With CONSULT-III 

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Select "A/F SEN1(B1) P1278/P1279" (for DTC P0133) or "A/F SEN1(B2) P1288/P1289" (for DTC P0153) of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-III.
6. Touch "START".

Is "COMPLETED" displayed on CONSULT-III screen? 

YES: GO TO 3

NO: GO TO  4.

Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III screen? 

OK: INSPECTION END

NG: Go to "DIAGNOSIS PROCEDURE ".

1. After perform the following procedure, "TESTING" will be displayed on the CONSULT-III screen.
   • Increase the engine speed up to 4, 000 to 5, 000 rpm and keep it for 10 seconds.
   • Fully release accelerator pedal and then let engine idle for about 10 seconds.

     If "TESTING" is not displayed after 10 seconds,  refer to "COMPONENT FUNCTION CHECK ".

2. Wait for about 20 seconds at idle at under the condition that "TESTING" is displayed on the CONSULT-III screen.
3. Check that "TESTING" changes to "COMPLETED".

   If "TESTING" changed to "OUT OF CONDITION",  refer to "COMPONENT FUNCTION CHECK ".

4. Touch "SELF-DIAG RESULT".

Which is displayed on CONSULT-III screen? 

OK: INSPECTION END

NG: Go to "DIAGNOSIS PROCEDURE ".

With GST 

1. Start engine and warm it up to normal operating temperature.
2. Select Service $01 with GST.
3. Calculate the total value of "Short term fuel trim" and "Long term fuel trim" indications.

Is the total percentage within ±15%? 

YES: GO TO  7.

NO: GO TO 6.

Check the following.

• Intake air leaks
• Exhaust gas leaks
• Incorrect fuel pressure
• Lack of fuel
• Fuel injector
• Incorrect PCV hose connection
• PCV valve
• Mass air flow sensor

  Repair or replace malfunctioning part.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
3. Let engine idle for 1 minute.
4. Increase the engine speed up to 4, 000 to 5, 000 rpm and keep it for 10 seconds.
5. Fully release accelerator pedal and then let engine idle for about 1 minute.
6. Check 1st trip DTC.

Is 1st trip DTC detected? 

YES: Go to "DIAGNOSIS PROCEDURE ".

NO: INSPECTION END