Procedure For Malfunction B

With CONSULT-III 

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

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

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

   If NG, go to "DIAGNOSTIC PROCEDURE ."

   If OK, go to following step.

   Fig 1: Linear Voltage Graph

   Courtesy of NISSAN MOTOR CO., U.S.A.
7. Maintain the following conditions for at least 10 consecutive seconds.
   ENGINE SPEED AND THROTTLE SENSOR VOLTAGE SPECIFICATION
   
   

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

8. Check 1st trip DTC.
9. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "