DTC Confirmation Procedure

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

   TESTING CONDITION: 

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

   Do you have CONSULT? 

   YES: GO TO 2.

   NO: GO TO  6.

With CONSULT 

1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
6. Let engine idle for 1 minute.
7. Increase the engine speed up to about 3, 600 RPM and keep it for 10 seconds.
8. Fully release accelerator pedal and then let engine idle for about 1 minute.
9. Check the items status of "DATA MONITOR" as follows.
   NOTE: If "PRSNT" changed to "ABSNT", refer to "COMPONENT FUNCTION CHECK ".

   DTC	Data monitor item	Status
   P014C P014D P015A P015B	A/F SEN1 DIAG3 (B1)	PRSNT
   P014E P014F P015C P015D	A/F SEN1 DIAG3 (B2)

   Is "PRSNT" displayed on CONSULT screen? 

   YES: GO TO  4.

   NO: GO TO 3.

With CONSULT 

Perform DTC confirmation procedure-1 again.

Is "PRSNT" displayed on CONSULT screen? 

YES: GO TO 4.

NO: Refer to "COMPONENT FUNCTION CHECK ".

With CONSULT 

1. Wait for about 20 seconds at idle.
2. Check the items status of "DATA MONITOR" as follows.
   NOTE: If "CMPLT" changed to "INCMP", refer to "COMPONENT FUNCTION CHECK ".

   DTC	Data monitor item	Status
   P014C P014D P015A P015B	A/F SEN1 DIAG1 (B1)	CMPLT
   	A/F SEN1 DIAG2 (B1)
   P014E P014F P015C P015D	A/F SEN1 DIAG1 (B2)
   	A/F SEN1 DIAG2 (B2)

   Is "CMPLT" displayed on CONSULT screen? 

   YES: GO TO 5.

   NO: Refer to "COMPONENT FUNCTION CHECK ".

With CONSULT 

Check the "SELF-DIAG RESULT".

Is any DTC detected? 

YES: Proceed to "DIAGNOSIS PROCEDURE ".

NO: INSPECTION END

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  8.

   NO: GO TO 7.

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. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3, 500 and 4, 000 RPM for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Increase the engine speed up to about 3, 600 RPM and keep it for 10 seconds.
7. Fully release accelerator pedal and then let engine idle for about 1 minute.
8. Check 1st trip DTC.

   Is 1st trip DTC detected? 

   YES: Proceed to "DIAGNOSIS PROCEDURE ".

   NO: INSPECTION END