Nissan Versa (N17): Normal operating condition
Description
FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED)
If the engine speed is above 2,400 rpm under no load (for example, the shift lever position is neutral and engine speed is over 2,400 rpm) fuel will be cut off after some time. The exact time when the fuel is cut off varies based on engine speed.
Fuel cut will be operated until the engine speed reaches 2,000 rpm, then fuel cut will be cancelled.
NOTE: This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC, "MULTIPORT FUEL INJECTION SYSTEM : System Description".
Engine control system symptoms
Symptom Table SYSTEM - BASIC ENGINE CONTROL SYSTEM 1 - 6: The numbers refer to the order of inspection. (continued on next table) SYSTEM - ENGINE MECHANICAL & OTHER ...
IDLE SPEED
Inspection 1.CHECK IDLE SPEED With CONSULT Check idle speed in "DATA MONITOR" mode with CONSULT. Without CONSULT Check idle speed by installing the pulse type tachometer clamp on the loop wir ...
Other materials:
Automatic speed control device (ASCD)
Automatic speed control device (ascd) : system diagram
NOTE:
Transmission range switch and TCM is also for A/T models.
Automatic speed control device (ascd) : system description
INPUT/OUTPUT SIGNAL CHART
Sensor
Input signal to ECM
ECM function
Actuator
Brake pedal ...
Positive crankcase ventilation
Inspection
1.CHECK PCV VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be felt immediately when a finger is
placed over valve inlet.
Is the inspection result normal?
YES &g ...
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