Nissan Sentra Service Manual: Starter motor drive control

Nissan Sentra Service Manual / Engine / Engine control system / System / Starter motor drive control

STARTER MOTOR DRIVE CONTROL : System Description

SYSTEN DIAGRAM

*1: CVT models

*2: M/T models

INPUT/OUTPUT SIGNAL CHART

Sensor	Input signal to ECM		ECM function	Actuator
Crankshaft position sensor (POS)	Engine speed Piston position		Starter motor drive control	BCM IPDM E/R (Starter relay & starter control relay)
Camshaft position sensor (PHASE)
Engine coolant temperature sensor	Engine coolant temperature
Accelerator pedal position sensor	Accelerator pedal position
Transmission range switch (CVT)	Gear position
Park/ Neutral position switch (M/T)	Gear position
Stop lamp switch	Brake pedal position
Combination meter	CAN communication	Vehicle speed signal

SYSTEM DESCRIPTION

When rapid deceleration occurs during engine runs or idle speed decreases due to heavy load conditions, ECM detects a decrease in idle speed and restarts the engine to secure reliability in handleability by transmitting a cranking request signal to IPDM E/R for activating the starter motor under the following conditions:

Selector lever: Other than P and N (CVT models)
Shifter lever: Other than neutral position (M/T models)
Idle switch: ON (Accelerator pedal not depressed)
Brake switch: ON (Brake pedal depressed)

ECM transmits a control signal to IPDM E/R via BCM by CAN communication.

IPDM E/R detects an operating state of the starter motor relay and the starter motor control relay and transmits a feed back signal to ECM via CAN Communication.

Cooling fan control

SYSTEM DIAGRAM SYSTEM DESCRIPTION ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pressure, air conditioner ON signal. Then control syst ...

Evaporative emission system

EVAPORATIVE EMISSION SYSTEM : System Description SYSTEM DIAGRAM INPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Crankshaft position sensor (P ...

Other materials:

Using the system
The NISSAN Voice Recognition system allows hands-free operation of the Bluetooth® Phone System. If the vehicle is in motion, some commands may not be available so full attention may be given to vehicle operation. Initialization When the ignition switch is placed in the ON position, NISSAN ...

Diagnosis system (bcm) (with intelligent key system)
Common item Common item : consult function (bcm - common item) Application item Consult performs the following functions via can communication with bcm. Direct diagnostic mode Description ECU identification The BCM part number is displayed. Self diagnostic result ...

NISSAN vehicle immobilizer system (if so equipped)
The NISSAN Vehicle Immobilizer System will not allow the engine to start without the use of a registered key. If the engine fails to start using a registered key (for example, when interference is caused by another registered key, an automated toll road device or automatic payment device on ...