2011 INFINITI QX56 check engine

MWI
COMBINATION METERMWI-37
< ECU DIAGNOSIS INFORMATION >
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DCA IND Ignition switch
ONNOTE:
This item is displayed, but cannot be moni-
tored.
Off
CHECK SUS IND Ignition switch
ONCK SUSP indicator lamp ON On
CK SUSP indicator lamp OFF Off
LCD Ignition switch
ON
During engine start in
formation indication B&P I
Ignition switch
ACC During engine start in
formation indication B&P N
Ignition switch
LOCK During key ID warning indication ID NG
Ignition switch
LOCK During steering lock information indication ROTAT
Ignition switch
LOCK During P position warning indication SFT P
Ignition switch
LOCK During Intelligent Key insert information in-
dication
INSRT
Ignition switch
LOCK During Intelligent Key low battery warning
indication
BATT
Ignition switch
ON During take away warning indication NO KY
Ignition switch
LOCK During key warning indication OUTKY
Ignition switch
ON During ACC warning indication LK WN
ACC TARGET Ignition switch
ONDuring vehicle ahead detection indicator in-
dication
On
Other than the above Off
ACC DISTANCE Ignition switch
ONWhen following distance set to “LONG” LONG
When following distance set to “MIDDLE” MID
When following distance set to “SHORT” SHORT
Set distance indicator not displayed Off
ACC OWN VHL Ignition switch
ONDuring own vehicle indicator indication On
Other than the above Off
ACC SET SPEED Ignition switch
ONDuring set vehicle speed indicator not dis-
played
Off
During set vehicle speed indicator dis-
played Indicates the set vehicle speed
ACC UNIT Ignition switch
ONSet vehicle speed indicator unit display ON On
Set vehicle speed indicator unit display OFF Off
Monitor Item Condition Value/Status
Revision: 2010 May2011 QX56

MWI
COMBINATION METERMWI-43
< ECU DIAGNOSIS INFORMATION >
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DTC IndexINFOID:0000000006221723
Warning lamp/indicator lamp ABS warning lamp
The lamp turns ON by suspending communication.
VDC warning lamp
Brake warning lamp
IBA OFF indicator lamp
4WD warning lamp
Malfunction indicator lamp
VDC OFF indicator lamp
CRUISE warning lamp
Low tire pressure warning lamp The lamp blinking caused by suspending communication.
High beam indicator lamp
The lamp turns OFF by suspending communication.
Turn signal indicator lamp
Tail lamp indicator lamp
A/T CHECK indicator lamp
Key warning lamp
AT P w a r n i n g l a m p
Lane departure warning lamp
LDP ON indicator lamp
CRUISE indicator lamp
Oil pressure warning lamp
SNOW mode indicator lamp
TOW mode indicator lamp
CK SUSP indicator lamp
BSW indicator lamp
Function Specifications
Display contents of CONSULT-III Diagnostic item is detected when... Refer to
CAN COMM CIRCUIT
[U1000] When combination meter is not transmitting or receiving CAN communication signal
for 2 seconds or more. MWI-59,
"Diagnosis
Procedure"
CONTROL UNIT (CAN)
[U1010]
When detecting error during the initial diagnosis of the CAN controller of combina-
tion meter. MWI-60, "Diagnosis
Procedure"
VEHICLE SPEED
[B2205]
The abnormal vehicle speed signal is input from the ABS actuator and electric unit
(control unit) for
2 seconds or more. MWI-61, "Diagnosis
Procedure"
ENGINE SPEED
[B2267]
If ECM continuously transmits abnormal engine speed signals for 2 seconds or
more. MWI-62, "Diagnosis
Procedure"
WATER TEMP
[B2268]
If ECM continuously transmits abnormal engine coolant temperature signals for 60
seconds or more. MWI-63, "Diagnosis
Procedure"
Revision: 2010 May2011 QX56

MWI
OIL PRESSURE SWITCH SIGNAL CIRCUIT
MWI-71
< DTC/CIRCUIT DIAGNOSIS >
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OIL PRESSURE SWITCH SIGNAL CIRCUIT
Component Function CheckINFOID:0000000006221751
1.CHECK COMBINATION METER INPUT SIGNAL
Select the “Data Monitor” for the “METER/M& A” and check the “OIL W/L” monitor value.
>> INSPECTION END
Diagnosis ProcedureINFOID:0000000006221752
1.CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and oil pressure switch connector.
3. Check continuity between IPDM E/R harness c onnector and oil pressure switch harness connector.
4. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Component InspectionINFOID:0000000006221753
1.CHECK OIL PRESSURE SWITCH
Check continuity between oil pressure switch and ground.
Is the inspection result normal?
YES >> INSPECTION END
“OIL W/L”
Ignition switch ON : On
Engine running : Off
Te r m i n a l s Continuity
(+) (
−)
IPDM E/R Oil pressure switch
Connector Terminal Connector Terminal E1324E2061Existed
Te r m i n a l s Continuity
(+) (
−)
IPDM E/R Ground
Connector Terminal
E13 24 Not existed
Condition Continuity
Engine stopped Existed Engine running Not existed
ELF0044D
Revision: 2010 May2011 QX56

MWI
THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFFMWI-79
< SYMPTOM DIAGNOSIS >
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THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF
DescriptionINFOID:0000000006221765
The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure).
Diagnosis ProcedureINFOID:0000000006221766
1.CHECK OIL PRESSURE WARNING LAMP
Perform auto active test. Refer to PCS-10, "
Diagnosis Description".
Is oil pressure warning lamp blinking?
YES >> GO TO 2.
NO >> GO TO 5.
2.CHECK IPDM E/R OUTPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect the oil pressure switch connector.
3. Turn ignition switch ON.
4. Check voltage between the oil pressure switch harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK OIL PRESSURE SWITCH
Perform a unit check for the oil pressure switch. Refer to MWI-71, "
Component Inspection".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Replace oil pressure switch. Refer to EM-58, "
Removal and Installation".
4.CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT
Check the oil pressure switch signal circuit. Refer to MWI-71, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK COMBINATION METER INPUT SIGNAL
Connect CONSULT-III and perform an input signal check for the combination meter. Refer to MWI-71, "
Com-
ponent Function Check".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace IPDM E/R. Refer to PCS-32, "
Removal and Installation".
Te r m i n a l s
Voltag e
(Approx.)
(+) (
−)
Oil pressure switch Ground
Connector Terminal
E206 1 12 V
Revision: 2010 May2011 QX56

MWI-80
< SYMPTOM DIAGNOSIS >
THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING, OR
DOES NOT DISPLAY
THE PARKING BRAKE RELEASE WA RNING CONTINUES DISPLAYING,
OR DOES NOT DISPLAY
DescriptionINFOID:0000000006221767
 The parking brake warning is displayed during vehi cle travel even though the parking brake is released.
 The parking brake warning is not displayed even though driving the vehicle with the parking brake applied.
Diagnosis ProcedureINFOID:0000000006221768
1.CHECK PARKING BRAKE WARNING LAMP OPERATION
1. Start engine.
2. Check the operation of the brake warni ng lamp when operating the parking brake.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> GO TO 2.
2.CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Check the parking brake switch signal circuit. Refer to WCS-43, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK PARKING BRAKE SWITCH UNIT
Perform a unit check for the parking brake switch. Refer to BRC-118, "
Component Inspection".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace parking brake switch. Refer to PB-5, "
Exploded View".
Condition Warning lamp status
Parking brake applied ON
Parking brake released OFF
Revision: 2010 May2011 QX56

PCS-10
< SYSTEM DESCRIPTION >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000006220170
AUTO ACTIVE TEST
Description
In auto active test, the IPDM E/R sends a drive si
gnal to the following systems to check their operation.
 Oil pressure warning lamp
 Rear window defogger
 Front wiper (LO, HI)
 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp
 Headlamp (LO, HI)
 A/C compressor (magnet clutch)
Operation Procedure
CAUTION:
Never perform auto active test in the following conditions.
 Engine is running.
 CONSULT-III is connected.
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, pr ess the driver door switch 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close passenger door.
4. Turn the ignition switch ON within 10 seconds. Af ter that the horn sounds once and the auto active test
starts.
CAUTION:
Engine starts when igniti on switch is turned ON while brake pedal is depressed.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
 When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
 When auto active test is not activated, door swit ch may be the cause. Check door switch. Refer to DLK-117,
"ComponentFunctionCheck".
Inspection in Auto Active Test
When auto active test is actuated, the following operation sequence is repeated 3 times.
Operation
sequence Inspection location Operation
1 Oil pressure warning lamp Blinks continuously during operation of auto active test
2 Rear window defogger 10 seconds
3 Front wiper LO for 5 seconds → HI for 5 seconds
4 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp 10 seconds
Revision: 2010 May2011 QX56

PCS
DIAGNOSIS SYSTEM (BCM)PCS-41
< SYSTEM DESCRIPTION > [POWER DISTRIBUTION SYSTEM]
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ENGINE START BY I-KEY
Engine start function mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
TRUNK/GLASS HATCH OPEN Buzzer reminder function mode by back door opener switch can be changed to operation with
this mode
 On: Operate
 Off: Non-operation
PANIC ALARM SET Panic alarm button pressing time on Intelligent Key button can be selected from the following
with this mode
 MODE 1: 0.5 sec
 MODE 2: Non-operation
 MODE 3: 1.5 sec
TRUNK OPEN DELAY Back door open button pressing to Intelligent Key button can be selected as per the following
in this mode
 MODE 1: Press and hold
 MODE 2: Press twice
 MODE 3: Press and hold, or press twice
LO- BATT OF KEY FOB WARN Intelligent Key low battery warning mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
ANTI KEY LOCK IN FUNCTI Key reminder function mode can be changed to operation with this mode
 On: Operate
 Off: Non-operation
HAZARD ANSWER BACK Hazard reminder function mode by door request switch and Intelligent Key button can be se-
lected from the following with this mode
 Lock Only: Door lock operation only
 Unlock Only: Door unlock operation only
 Lock/Unlock: Lock and unlock operation
 Off: Non-operation
ANS BACK I-KEY LOCK Buzzer reminder function (lock operation) mode by door request switch can be selected from
the following with this mode
 Horn Chirp: Sound horn
 Buzzer: Sound Intelligent Key warning buzzer
 Off: Non-operation
ANS BACK I-KEY UNLOCK Buzzer reminder function (unlock operation) mode by door request switch can be changed to
operation with this mode
 On: Operate
 Off: Non-operation
SHORT CRANKING OUTPUT Starter motor can operate during the times below
 70 msec
100 msec
200 msec
CONFIRM KEY FOB ID It can be checked wh ether Intelligent Key ID code is registered or not in this mode
AUTO LOCK SET Auto door lock operation time can be changed in this mode
 MODE 1: OFF
 MODE 2: 30 sec
 MODE 3: 1 minute
 MODE 4: 2 minutes
 MODE 5: 3 minutes
 MODE 6: 4 minutes
 MODE 7: 5 minutes
HORN WITH KEYLESS LOCK Horn reminder function mode by Intelligent Key button can be selected from the following with
this mode
 On: Operate
 Off: Non-operation
Monitor item Description
Revision: 2010 May2011 QX56

PCS
DIAGNOSIS SYSTEM (BCM)PCS-43
< SYSTEM DESCRIPTION > [POWER DISTRIBUTION SYSTEM]
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*: OFF is displayed when brake pedal is depressed while brake switch power supply is OFF.
ACTIVE TEST
PRMT RKE STRT
NOTE:
This item is displayed, but cannot be monitored
TRNK/HAT MNTR NOTE:
This item is displayed, but cannot be monitored
RKE-LOCK Indicates [On/Off] condition of LOCK signal from Intelligent Key
RKE-UNLOCK Indicates [On/Off] condition of UNLOCK signal from Intelligent Key
RKE-TR/BD NOTE:
This item is displayed, but cannot be monitored
RKE-PANIC Indicates [On/Off] condition of PANIC button of Intelligent Key
RKE-MODE CHG Indicates [On/Off] condition of MODE CHANGE signal from Intelligent Key
RKE OPE COUN1 When remote keyless entry receiver receives the signal transmitted while operating on Intelli-
gent Key, the numerical value start changing
RKE OPE COUN2 NOTE:
This item is displayed, but cannot be monitored
Monitor Item Condition
Test item Description
BATTERY SAVER This test is able to check interior room lamp operation
 On: Operate
 Off: Non-operation
OUTSIDE BUZZER This test is able to check Intelligent Key warning buzzer operation
 On: Operate
 Off: Non-operation
INSIDE BUZZER This test is able to check warning chime in combination meter operation
 Take Out: Take away warning chime sounds when CONSULT-III screen is touched
 Key: Key warning chime sounds when CONSULT-III screen is touched
 Knob: OFF position warning chime sounds when CONSULT-III screen is touched
 Off: Non-operation
INDICATOR This test is able to check warning lamp operation
 KEY ON: “KEY” Warning lamp illuminates when CONSULT-III screen is touched
 KEY IND: “KEY” Warning lamp blinks when CONSULT-III screen is touched
 Off: Non-operation
INT LAMP This test is able to check interior room lamp operation
 On: Operate
 Off: Non-operation
LCD This test is able to check meter display information
 Engine start information displays when “BP N” on CONSULT-III screen is touched
 Engine start information displays when “BP I” on CONSULT-III screen is touched
 Key ID warning displays when “ID NG” on CONSULT-III screen is touched
 Steering lock information displays when “ROTAT” on CONSULT-III screen is touched
 P position warning displays when “SFT P” on CONSULT-III screen is touched
 INSRT: This item is displayed, but cannot be monitored
 BATT: This item is displayed, but cannot be monitored
 Take away through window warning displays when “NO KY” on CONSULT-III screen is
touched
 Take away warning displa y when “OUTKEY” on CONSUL T-III screen is touched
 OFF position warning display when “LK WN” on CONSULT-III screen is touched
FLASHER This test is able to check security hazard lamp operation
The hazard lamps are activated after “LH/RH/Off” on CONSULT-III screen is touched
P RANGE This test is able to check A/T shift selector power supply
 On: Operate
 Off: Non-operation
ENGINE SW ILLUMI This test is able to check push-button ignition switch illumination operation
Push-ignition switch illumination illuminates when “ON” on CONSULT-III screen is touched
Revision: 2010 May2011 QX56