DTC Confirmation Procedure

If DTC Confirmation Procedure has been previously conducted, always perform the following 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.

: GO TO 2.

1. Start engine and warm it up to normal operating temperature.
2. Run engine for at least 10 seconds at idle speed.
3. Check 1st trip DTC.

Is 1st trip DTC detected? 

YES: Go to "DIAGNOSIS PROCEDURE ".

NO-1: With CONSULT-III: GO TO 3.

NO-2: Without CONSULT-III: GO TO 5.

1. Turn ignition switch ON.
2. Start engine and warm it up to normal operating temperature.

   If engine cannot be started, go to "DIAGNOSIS PROCEDURE ".

3. Select "MAS A/F SE-B1" in "DATA MONITOR" mode with CONSULT-III.
4. Check the voltage of "MAS A/F SE-B1".
5. Increases engine speed to about 4, 000 RPM.
6. Monitor the linear voltage rise in response to engine speed increases.

Is the inspection result normal? 

YES: GO TO 4.

NO: Go to "DIAGNOSIS PROCEDURE ".

Fig 1: MAS A/F SE-B1 Voltage Graph

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Maintain the following conditions for at least 10 consecutive seconds.
   VOLTAGE REFERENCE CHART
   
   

   ENG SPEED	More than 2, 000 RPM
   TP SEN 1-B1	More than 3 V
   TP SEN 2-B1	More than 3 V
   Selector lever	Suitable position
   Driving location	Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.

   CAUTION: Always drive vehicle at a safe speed.
2. Check 1st trip DTC.

Is 1st trip DTC detected? 

YES: Go to "DIAGNOSIS PROCEDURE ".

NO: INSPECTION END

Perform component function check. Refer to "COMPONENT FUNCTION CHECK ".

Is the inspection result normal? 

YES: INSPECTION END

NO: Go to "DIAGNOSIS PROCEDURE ".