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Home >> Infiniti >> 2022 >> QX60 Pure, FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (3 Of 3) >> Symptom Diagnosis >> Normal Operating Condition >> Description >> Normal Operation Of Stop/Start System
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Normal Operation Of Stop/Start System

1. When there is no prohibit cause in "Stop / Start prohibit cause data recorder". 

Stop/Start system may be deactivated for driver safety and vehicle protection by cooperation with other control units as normal operation. Refer to System Description .

Check displayed items on CONSULT following the table below to confirm relation between cause of stop/start system deactivation and a customer complaint.

If "Driver operation", "S/S OFF switch ON", "Driving pattern", "Fail-safe" are displayed in "Stop / Start prohibit cause data recorder" of "Work support" of CONSULT, investigate the cause in the table. Also, if the above four points are displayed as the main factors, please ignore the numbers displayed on the CONSULT screen.

CONSULT display

Detailed condition

Work support

Main factors

Stop/Start prohibit cause data recorder

Driving pattern
  • Not drive the vehicle at specified speed after turn ignition switch ON.
  • Not pass 5 seconds or more after engine restart.
  • Not drive the vehicle forward at specified speed after engine restart.

Driver operation
  • Shift lever position is at Neutral position and clutch pedal is not depressed. (M/T models)
  • Brake pedal is not depressed. (A/T models)

S/S OFF switch ON

Stop/Start OFF switch is ON.

Fail-safe

Fail safe of stop/start system is applied.

Select "Stop / Start error" in "Monitor Menu" of "DATA MONITOR" mode of CONSULT, and check if there is any "NG" item. Refer to CONSULT Function .

Stop/Start engine restart cause data recorder

Driving pattern
  • M/T models

    - Clutch pedal is slightly depressed when shift lever position is at Neutral position.

    - Clutch pedal is fully depressed when shift lever position is at except Neutral position.

  • A/T models

    - Brake pedal is released.

    - Shift selector is switched from P or N position to D or R position.

    - Accelerator pedal is depressed.

    - Paddle shifter is operated when shift selector is at D, L, or M position.

    - Change gear position when shift selector is at M position.

S/S OFF switch ON

Stop/Start OFF switch is ON.

Fail-safe

Fail safe of stop/start system is applied.

Select "Stop / Start error" in "Monitor Menu" of "DATA MONITOR" mode of CONSULT, and check if there is any "NG" item. Refer to CONSULT Function .

Stop/Start engine stall cause data recorder

Fail-safe

Fail safe of stop/start system is applied.

Select "Stop / Start error" in "Monitor Menu" of "DATA MONITOR" mode of CONSULT, and check if there is any "NG" item. Refer to CONSULT Function .

Prevent jumping out
  • One of below condition is satisfied when engine is stopped and gear position is except N position without depressing clutch pedal.

    - Driving seat door is opened.

    - Driving seat belt is unfastened.

    - 5 minutes passes after other system requires restarting engine.

  • Clutch pedal is released cranking.

Hood open

Hood is opened.

*: Not applicable for this vehicle.

2. When there is a prohibit cause in the "Stop / Start prohibit cause data recorder" 

Stop/Start system may be deactivated for driver safety and vehicle protection by cooperation with other control units as normal operation. Refer to System Description .

Check displayed items on CONSULT following the table below to confirm relation between cause of stop/start system deactivation and a customer complaint.

If "System condition" is displayed in "Stop / Start prohibit cause data recorder" of "Work support" of CONSULT, investigate the cause in the table. Also, please check the consultation screen for the explanation of the numbers displayed on the CONSULT screen.

CONSULT display

Detailed condition

Work support

Main factors

Condition item

Stop/Start prohibit cause data recorder

System condition

Hood condition

Open

Driving seat door

Open

Driving seat belt

Not fastened

ABS condition

Operating

NOTE: If ABS system is activated, drive the vehicle at 12 km/h (7.5 MPH) or more after stop the vehicle.

VDC condition

Brake control system prohibits stop/start system operation.

Negative pressure cond

Below specified pressure

AC cond

Air conditioner system prohibits stop/start system operation.

Power supply cond
  • Power supply system prohibits stop/start system operation.
  • The battery is depleted.
  • Insufficient battery charge.
  • Check whether use battery designed for stop/start system. Refer to Battery .

IPA condition

Operating

ProPILOT condition

ProPILOT system prohibits stop/start system operation.

ABH condition

Automatic brake hold system prohibits stop/start system operation. (Brake fluid pressure is insufficient.)

I-KEY condition

Intelligent key is outside vehicle.

4WD mode

4WD mode is selected.

Delivery mode

ON

NOTE: No activation in market

Continuous times

Starter becomes hot due to continuous operation.

ST RLY OFF exp

Starter relay which is connected to BCM is not turned off after engine restart.

DC/DC temp cond

Above specified temperature (CVT models)

Neutral SW OFF exp *

Neutral switch is not turned off after engine restart. (M/ T models)

ENG/TM condition

Engine or transmission conditions are not satisfied.

ST RLY condition

Starter relay which is connected to BCM is turned on.

Steering condition

Steer

Slope condition

Above specified degrees

Brake fluid pressure

Above specified pressure

Automatic emergency braking

Automatic emergency braking system prohibits stop/start system operation.

TOW mode

"TOW" mode is selected as the drive mode.

Drive mode

--

Stop/Star engine restart cause data recorder

System condition

VDC condition

Brake control system requires restarting engine.

Negative pressure cond

Below specified pressure.

AC cond

Air conditioner requires restarting engine.

Power supply cond

Power supply system requires restarting engine.

IPA condition

Operating

ProPILOT condition

ProPILOT system requires restarting engine.

ABH condition

Automatic brake hold system requires restarting engine.

I-KEY condition

Intelligent key is outside vehicle.

Vehicle speed cond

Above specified speed.

ENG/TM condition

Engine or transmission are satisfied.

Steering condition

Steer (A/T models)

DC/DC temp cond

Above specified temperature (CVT models)

Driving seat door

Open

Driving seat belt

Unfastened

Automatic emergency braking

Automatic emergency braking system prohibits stop/start system operation.

TOW mode

"TOW" mode is selected as the drive mode.

Drive mode

--

*: Not applicable for this vehicle.

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