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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Introduction, Wiring Diagrams And Basic Inspection) >> Ecu Diagnosis Information >> ECM >> Reference Value >> Values On The Diagnosis Tool
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Values On The Diagnosis Tool

NOTE:
  • The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.
  • Numerical values in the following table are reference values.
  • These values are input/output values that ECM receives/transmits and may differ from actual operations.

    Example:

    The ignition timing shown by the timing light may differ from the ignition timing displayed on the data monitor. This occurs because the timing light shows a value calculated by ECM according to signals received from the cam shaft position sensor and other sensors related to ignition timing.

For outlines of following items, refer to CONSULT FUNCTION .

CONSULT MONITOR ITEM

Monitor Item Condition Values/Status
ENG SPEED
  • Run engine and compare CONSULT value with the tachometer indication.
 Almost the same speed as the tachometer indication
MAS A/F SE-B1 See DESCRIPTION .
B/FUEL SCHDL See DESCRIPTION .
A/F ALPHA-B1 See DESCRIPTION .
A/F ALPHA-B2 See DESCRIPTION .
COOLANT TEMP/S
  • Ignition switch: ON
 Indicates engine coolant temperature
A/F SEN1 (B1)
  • Engine: After warming up
 Maintaining engine speed at 2, 000 rpm Fluctuates around 2.2 V
A/F SEN1 (B2)
  • Engine: After warming up
 Maintaining engine speed at 2, 000 rpm Fluctuates around 2.2 V
HO2S2 (B1)
  • Revving engine from idle up to 3, 000 rpm quickly after the following conditions are met.
    • Engine: After warming up
    • After keeping engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 0 - 0.3 V ==> Approx. 0.6 - 1.0 V
HO2S2 (B2)
  • Revving engine from idle up to 3, 000 rpm quickly after the following conditions are met.
    • Engine: After warming up
    • After keeping engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 0 - 0.3 V ==> Approx. 0.6 - 1.0 V
HO2S2 MNTR (B1)
  • Revving engine from idle up to 3, 000 rpm quickly after the following conditions are met.
    • Engine: After warming up
    • After keeping engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 LEAN ==> RICH
HO2S2 MNTR (B2)
  • Revving engine from idle up to 3, 000 rpm quickly after the following conditions are met.
    • Engine: After warming up
    • After keeping engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 LEAN ==> RICH
VHCL SPEED SE
  • Turn drive wheels and compare CONSULT value with the speedometer indication.
 Almost the same speed as speedometer indication
BATTERY VOLT
  • Ignition switch: ON (Engine stopped)
 11 - 14 V
ACCEL SEN 1
  • Ignition switch: ON

    (Engine stopped)

 Accelerator pedal: Fully released 0.5 - 1.0 V
Accelerator pedal: Fully depressed 4.2 - 4.8 V
ACCEL SEN 2*1
  • Ignition switch: ON

    (Engine stopped)

 Accelerator pedal: Fully released 0.5 - 1.0 V
Accelerator pedal: Fully depressed 4.2 - 4.8 V
TP SEN 1-B1
  • Ignition switch: ON

    (Engine stopped)

  • Selector lever: D position
 Accelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
TP SEN 2-B1*1
  • Ignition switch: ON

    (Engine stopped)

  • Selector lever: D position
 Accelerator pedal: Fully released More than 0.36 V
Accelerator pedal: Fully depressed Less than 4.75 V
FUEL T/TMP SE
  • Ignition switch: ON
 Indicates fuel tank temperature
EVAP SYS PRES
  • Ignition switch: ON
 Approx. 1.8 - 4.8 V
FUEL LEVEL SE
  • Ignition switch: ON
 Depending on fuel level of fuel tank
START SIGNAL
  • Ignition switch: ON → START → ON
 OFF → ON → OFF
CLSD THL POS
  • Ignition switch: ON

    (Engine stopped)

 Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
  • Engine: After warming up, idle the engine
 Air conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)		 ON
PW/ST SIGNAL
  • Engine: After warming up, idle the engine
 Steering wheel: Not being turned OFF
Steering wheel: Being turned ON
LOAD SIGNAL
  • Ignition switch: ON
 Rear window defogger switch: ON
and/or
Lighting switch: 2nd position		 ON
Rear window defogger switch and lighting switch: OFF OFF
IGNITION SW
  • Ignition switch: ON → OFF → ON
 ON → OFF → ON
HEATER FAN SW
  • Engine: After warming up, idle the engine
 Heater fan switch: ON ON
Heater fan switch: OFF OFF
BRAKE SW
  • Ignition switch: ON
 Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
IGN TIMING
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 1 - 4°BTDC
2, 000 rpm 25 - 45°BTDC
COMBUSTION - These items are displayed but are not applicable to this model.
CAL/LD VALUE
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 5 - 35%
2, 500 rpm 5 - 35%
MASS AIRFLOW
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 2.0 - 6.0 g/s
2, 500 rpm 7.0 - 20.0 g/s
PURG VOL C/V
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle
(Accelerator pedal: Not depressed even slightly, after engine starting.)		 0%
2, 000 rpm 5%
INT/V SOL (B1)
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 0 - 2%
2, 000 rpm Approx. 0 - 50%
INT/V SOL (B2)
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 0 - 2%
2, 000 rpm Approx. 0 - 50%
AIR COND RLY
  • Engine: After warming up, idle the engine
 A/C switch: OFF OFF
A/C switch: ON
(Compressor operates)		 ON
VENT CONT/V
  • Ignition switch: ON
 OFF
THRTL RELAY
  • Ignition switch: ON
 ON
A/F S1 HTR (B1)
  • Engine: After warming up, idle the engine

    (More than 140 seconds after starting engine)

 4 - 100%
A/F S1 HTR (B2)
  • Engine: After warming up, idle the engine

    (More than 140 seconds after starting engine)

 4 - 100%
HO2S2 HTR (B1)
  • Engine speed: Below 3, 600 rpm after the following conditions are met.
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 ON
  • Engine speed: Above 3, 600 rpm
 OFF
HO2S2 HTR (B2)
  • Engine speed: Below 3, 600 rpm after the following conditions are met.
    • Engine: After warming up
    • Keeping the engine speed between 3, 500 and 4, 000 rpm for 1 minute and at idle for 1 minute under no load
 ON
  • Engine speed: Above 3, 600 rpm
 OFF
ALT DUTY SIG
  • Power generation voltage variable control: Operating
 ON
  • Power generation voltage variable control: Not operating
 OFF
I/P PULLY SPD
  • Vehicle speed: More than 20 km/h (12 MPH)
 Almost the same speed as the tachometer indication
VEHICLE SPEED
  • Turn drive wheels and compare CONSULT value with the speedometer indication.
 Almost the same speed as the speedometer indication
IDL A/V LEARN
  • Engine: Running
 Idle air volume learning has not been performed yet. YET
Idle air volume learning has already been performed successfully. CMPLT
TRVL AFTER MIL
  • Ignition switch: ON
 Vehicle has traveled after MIL has illuminated. 0 - 65, 535 km
(0 - 40, 723 miles)
SNOW MODE SW
  • Ignition switch: ON
 Snow mode switch: ON ON
Snow mode switch: OFF OFF
ENG OIL TEMP
  • Engine: After warming up
 More than 70°C (158°F)
MAIN SW
  • Ignition switch: ON
 MAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
  • Ignition switch: ON
 CANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
  • Ignition switch: ON
 RESUME/ACCELERATE switch: Pressed ON
RESUME/ACCELERATE switch: Released OFF
SET SW
  • Ignition switch: ON
 SET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
BRAKE SW1
(ASCD/ICC brake switch)
  • Ignition switch: ON
 Brake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch)
  • Ignition switch: ON
 Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DIST SW
  • Ignition switch: ON
 DISTANCE switch: Pressed ON
DISTANCE switch: Released OFF
CRUISE LAMP
  • Ignition switch: ON
 MAIN switch: Pressed at the 1st time → at the 2nd time ON → OFF
AC EVA TEMP
  • Engine: Running
 Indicates A/C evaporator temperature sent from "unified meter and A/C amp.".
AC EVA TARGET
  • Engine: Running
 Indicates target A/C evaporator temperature sent from "unified meter and A/C amp.".
FAN DUTY
  • Engine: Running
 0 - 100%
ALT DUTY
  • Engine: Idle
 0 - 80%
BAT CUR SEN
  • Engine speed: Idle
  • Battery: Fully charged * 2
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Approx. 2, 600 - 3, 500 mV
A/F ADJ-B1
  • Engine: Running
 - 0.330 - 0.330
A/F ADJ-B2
  • Engine: Running
 - 0.330 - 0.330
P/N POSI SW
  • Ignition switch: ON
 Selector lever: P or N ON
Selector lever: Except above position OFF
INT/A TEMP SE
  • Ignition switch: ON
 Indicates intake air temperature
AC PRESS SEN
  • Engine: Idle
  • Both A/C switch and blower fan switch: ON (Compressor operates)
 1.0 - 4.0 V
FUEL PRES SEN
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 2.74 Mpa
2, 000 rpm Approx. 3.0 Mpa
FUEL INJ B1
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 1.4 msec
2, 000 rpm Approx. 1.0 msec
FUEL INJ B2
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 1.4 msec
2, 000 rpm Approx. 1.0 msec
INT/V TIM (B1)
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle - 5 - 5°CA
2, 000 rpm Approx. 0 - 30°CA
INT/V TIM (B2)
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle - 5 - 5°CA
2, 000 rpm Approx. 0 - 30°CA
MAP SENSOR
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 1.0 V
2, 000 rpm Approx. 1.35 V
EVAP LEAK DIAG
  • Ignition switch: ON
 Indicates the condition of EVAP leak diagnosis.
EVAP DIAG READY
  • Ignition switch: ON
 Indicates the ready condition of EVAP leak diagnosis.
VVEL LEARN
  • Ignition switch: OFF → ON

    (After warming up)

 VVEL learning has not been performed yet. YET
VVEL learning has already been performed successfully. DONE
VVEL SEN LEARN-B1
  • VVEL learning has already been performed successfully
 Approx. 0.30 - 0.80 V
VVEL SEN LEARN-B2
  • VVEL learning has already been performed successfully
 Approx. 0.30 - 0.80 V
VVEL POSITION SEN-B1
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 0.25 - 1.50 V
When revving engine up to 2, 000 rpm quickly Approx. 0.25 - 4.75 V
VVEL POSITION SEN-B2
  • Engine: After warming up
  • Selector lever: P or N position
  • Air conditioner switch: OFF
  • No load
 Idle Approx. 0.25 - 1.50 V
When revving engine up to 2, 000 rpm quickly Approx. 0.25 - 4.75 V
VVEL TIM-B1
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 0 - 23 deg
When revving engine up to 2, 000 rpm quickly Approx. 0 - 90 deg
VVEL TIM-B2
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 0 - 23 deg
When revving engine up to 2, 000 rpm quickly Approx. 0 - 90 deg
FPCM
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
  • Engine: Cranking
 HI
  • Revving engine from idle to 4, 000 rpm quickly
 MID
  • Engine: Idle
  • Engine coolant temperature: More than 10°C (50°F)
 LOW
BAT TEMP SEN
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Indicates the temperature around the battery.
COOLING FAN SPD
  • Engine speed: Idle
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Water temp: Less than 98°C Approx. 100 - 200 rpm
Water temp: More than 98°C Approx. 600 - 700 rpm
THRTL STK CNT B1
NOTE:

The item is indicated, but not used.

 -
HO2 S2 DIAG1(B1) DTC P0139 self-diagnosis (delayed response) has not been performed yet. INCMP
DTC P0139 self-diagnosis (delayed response) has already been performed successfully. CMPLT
HO2 S2 DIAG1(B2) DTC P0159 self-diagnosis (delayed response) has not been performed yet. INCMP
DTC P0159 self-diagnosis (delayed response) has already been performed successfully. CMPLT
HO2 S2 DIAG2(B1) * 3 DTC P0139 self-diagnosis (slow response) has not been performed yet. INCMP
DTC P0139 self-diagnosis (slow response) has already been performed successfully. CMPLT
HO2 S2 DIAG2(B2) * 3 DTC P0159 self-diagnosis (slow response) has not been performed yet. INCMP
DTC P0159 self-diagnosis (slow response) has already been performed successfully. CMPLT
FUEL INJ TIMG
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 16 deg
2, 000 rpm Approx. - 170 deg
H/P FUEL PUMP DEG
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 211.0 deg
2, 000 rpm Approx. 206.0 deg
FUEL PRES SEN V
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 820 - 1.220 mV
Revving engine from idle to 4, 000 rpm quickly Approx. 820 - 3.060 mV
L/FUEL PRES SEN
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 0.45 MPa
2, 000 rpm Approx. 0.45 MPa
L/FUEL PRES SEN V
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 3250 mV
3, 000 rpm Approx. 3100 mV
ECM TEMP 1
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Indicates the temperature of ECM internal circuit 1.
ECM TEMP 2
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Indicates the temperature of ECM internal circuit 2.
FUEL PUMP DUTY
  • Engine: After warming up
  • Shift lever: P or N
  • Air conditioner switch: OFF
  • No load
 Engine speed: Idle 30 - 40%
A/F SEN1 DIAG1 (B1) DTC P015A and P015B self - diagnosis incomplete. INCMP
DTC P015A and P015B self - diagnosis is complete. CMPLT
A/F SEN1 DIAG1 (B2) DTC P015C and P015D self - diagnosis incomplete. INCMP
DTC P015C and P015D self - diagnosis is complete. CMPLT
A/F SEN1 DIAG2 (B1) DTC P014C and P014D self - diagnosis incomplete. INCMP
DTC P014C and P014D self - diagnosis is complete. CMPLT
A/F SEN1 DIAG2 (B2) DTC P014E and P014F self - diagnosis incomplete. INCMP
DTC P014E and P014F self - diagnosis is complete. CMPLT
A/F SEN1 DIAG3 (B1) The vehicle condition is not within the diagnosis range of DTC P014C, P014D, P015A or P015B. ABSNT
The vehicle condition is within the diagnosis range of DTC P014C, P014D, P015A or P015B. PRSNT
A/F SEN1 DIAG3 (B2) The vehicle condition is not within the diagnosis range of DTC P014E, P014F, P015C or P015D. ABSNT
The vehicle condition is within the diagnosis range of DTC P014E, P014F, P015C or P015D. PRSNT
SYSTEM 1 DIAGNOSIS A B1 DTC P219A self - diagnosis is incomplete. INCMP
DTC P219A self - diagnosis is complete. CMPLT
SYSTEM 1 DIAGNOSIS A B2 DTC P219B self - diagnosis is incomplete. INCMP
DTC P219B self - diagnosis is complete. CMPLT
SYSTEM 1 DIAGNOSIS B B1 DTC P219A self - diagnosis is on standby. ABSENT
DTC P219A self - diagnosis is under diagnosis. PRSENT
SYSTEM 1 DIAGNOSIS B B2 DTC P219B self - diagnosis is on standby. ABSENT
DTC P219B self - diagnosis is under diagnosis. PRSENT
A/F-S ATMSPHRC CRCT B1 Engine: After warming up, idle the engine Varies depending on vehicle environment.
A/F-S ATMSPHRC CRCT B2 Engine: After warming up, idle the engine Varies depending on vehicle environment.
A/F-S ATMSPHRC CRCT UP B1 Engine: Running Varies depending on the number of updates.
A/F-S ATMSPHRC CRCT UP B2 Engine: Running Varies depending on the number of updates.
EXH/V TIM B1
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 0° - 1.5°CA
Around 2, 500 rpm while the engine speed is rising Approx. 0 - 30°CA
EXH/V TIM B2
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle 0 - 1.5°CA
Around 2, 500 rpm while the engine speed is rising Approx. 0 - 30°CA
EXH V/T LEARN
  • Engine: Running
 Exhaust Valve Timing Control Learning has not been performed yet. YET
Exhaust Valve Timing Control Learning has not been performed yet. CMPLT
EXHAUST GAS TEMP SEN 1 B1
  • Engine: After warming up
  • Idle speed
 1, 290 - 2, 940 mV
Output voltage varies with exhaust gas temperature.
EXHAUST GAS TEMP SEN 1 B2
  • Engine: After warming up
  • Idle speed
 1, 290 - 2, 940 mV
Output voltage varies with exhaust gas temperature.
EOP SENSOR
  • Engine: After warming up
  • Selector lever: P or N position
  • A/C switch: OFF
  • No load
 Idle Approx. 1200 mV
2, 000 rpm Approx. 2800 mV
RADIATOR COOLANT TEMP Engine: running 0 - 4.8 V
ENGINE COOLANT B/V POSI
  • Ignition switch: ON
  • Cold condition
 Approx. 0 deg
Engine: Idle Engine coolant temperature: 66°C (151°F) Approx. 51 deg
Engine coolant temperature: 76°C (169°F) Approx. 89 deg
Engine coolant temperature: 86°C (187°F) Approx. 131 deg
A/F IMBALNC DIAG- CPS STAT The vehicle condition is not within the diagnosis range of DTC P219C - P219F and P21A0 - P21A3. ABSENT
The vehicle condition is within the diagnosis range of DTC P219C - P219F and P21A0 - P21A3. PRSENT
A/F IMBLNC DIAG- CPS CMPLT Self-diagnosis of DTC P219C - P219F and P21A0 - P21A3 is incomplete. INCMP
Self-diagnosis of DTC P219C - P219F and P21A0 - P21A3 is complete. CMPLT

* 1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they differ from ECM terminals voltage signal.

* 2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to HOW TO HANDLE BATTERY .

* 3: For America and Canada.

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