2011 INFINITI QX56 Factory Service Manual

towing turn signal park assist infotainment towing capacity weight

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INFINITI QX56 2011 Factory Service Manual
ECM
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TP SEN 1-B1
Ignition switch: ON
(Engine stopped)
Selector lever: D position Accelerator pedal: Fully released More

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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 tempera-
ture
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%
Monitor Item Condition Values/Status
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
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ECM
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 RL

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ECM
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-III value with the speedometer in-
dication. Almost the same speed as
the speedometer indication
IDL A/V LEARN Engine: Running Idle air volume learning has not been per-
formed yet.
YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL Ignition switch: ON Vehicle has traveled after MIL has illumi-
nated.0 - 65,535 km
(0 - 40,7
23 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: Re-
leased 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
Monitor Item Condition Values/Status
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
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BRAKE SW2
(Stop lamp switch)
Ignition switch: ON Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON

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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“uni-
fied meter and A/C amp.”.
AC EVA TARGET Engine: Running Indicates target A/C evapo-
rator temperature sentfrom
“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 temper-
ature
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.
Monitor Item Condition Values/Status
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
EC-76
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ECM
EVAP DIAG READY Ignition switch: ON Indicates the ready condi-
tion of EVAP leak diagnosis.
VVEL LEARN Ignition switch: OFF
→ ON
(After warming

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ECM
EVAP DIAG READY Ignition switch: ON Indicates the ready condi-
tion of EVAP leak diagnosis.
VVEL LEARN Ignition switch: OFF
→ ON
(After warming up) VVEL learning has no
t been performed
yet. YET
VVEL learning has already been per-
formed 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 DIAG2(B1) NOTE:
The item is indicated, but not used.
—
HO2 S2 DIAG2(B2) NOTE:
The item is indicated, but not used. —
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
Monitor Item Condition Values/Status
Revision: 2010 May2011 QX56

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INFINITI QX56 2011 Factory Service Manual
ECM
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*1: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally.

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INFINITI QX56 2011 Factory Service Manual
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ECM
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
+ – Signal name Input/
Output
1
(R)
2
(R) 175
(B) Fuel injector No. 8 (HI)

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INFINITI QX56 2011 Factory Service Manual
ECM
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6
(R) 7
(R) 175
(B) Fuel injector No. 3 (HI)
Fuel injector No. 2 (HI)
Output[Engine is running]
Warm-up condition

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INFINITI QX56 2011 Factory Service Manual
EC-80
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ECM
12
(Y)
13
(L/B) 14
(BR/ Y)
15
(LG/ R) 175
(B) Ignition signal No. 1
Ignition signal No. 2
Ignition signal No. 3
Ignition signal No. 4
Input[Engine is r

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