display INFINITI QX56 2011 Factory Service Manual
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![INFINITI QX56 2011 Factory Service Manual
DAS
U0401 ECM CAN 1DAS-493
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U0401 ECM CAN 1
DTC LogicINFOID:0000000006228270
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected alon](/img/42/57033/w960_57033-1457.png "INFINITI QX56 2011 Factory Service Manual
DAS
U0401 ECM CAN 1DAS-493
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U0401 ECM CAN 1
DTC LogicINFOID:0000000006228270
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected alon")
DAS
U0401 ECM CAN 1DAS-493
< DTC/CIRCUIT DIAGNOSIS > [BSW]
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U0401 ECM CAN 1
DTC LogicINFOID:0000000006228270
DTC DETECTION LOGIC
NOTE:
If DTC “U0401” is detected along with DTC “U 1000”, first diagnose the DTC “U1000”. Refer to DAS-486,
"ADAS CONTROL UNIT : DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine.
2. Turn the BSW system ON.
3. Perform “All DTC Readi ng” with CONSULT-III.
4. Check if the “U0401” is detected as the current ma lfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U0401” detected as the current malfunction?
YES >> Refer to DAS-493, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006228271
1.CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “U0401” in “Self Diagnostic Result” of “ICC/ADAS”.
Is
“U1000” detected?
YES >> Perform the CAN communicati on system inspection. Repair or replace the malfunctioning parts.
Refer to DAS-486, "
ADAS CONTROL UNIT : DTC Logic".
NO >> GO TO 2.
2.CHECK ECM SELF-DIAGNOSIS RESULTS
Check if any DTC is detected in “S elf Diagnostic Result” of “ENGINE”.
Is any DTC detected?
YES >> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
EC-98, "
DTC Index".
NO >> Replace the ADAS control unit. Refer to DAS-63, "
Removal and Installation".
DTC
(On board
display) Trouble diagnosis name DTC detecting condition Possible causes
U0401 (120) ECM CAN CIR1 If ADAS control unit detects an error signal
that is received from ECM via CAN communi-
cation
ECM
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DEF-2
Component Function Check ...................................34
Diagnosis Procedure ..............................................34
SYMPTOM DIAGNOSIS .............................36
REAR WINDOW DEFOGGER DOES NOT
OPERATE ....................................................... ...
36
Diagnosis Procedure ........................................... ...36
REAR WINDOW DEFOGGER AND DOOR
MIRROR DEFOGGER DO NOT OPERATE. .....
37
Diagnosis Procedure ........................................... ...37
REAR WINDOW DEFOGGER DOES NOT
OPERATE BUT BOTH DOOR MIRROR DE-
FOGGERS OPERATE. ......................................
38
Diagnosis Procedure ........................................... ...38
DOOR MIRROR DEFOGGER DOES NOT OP-
ERATE ...............................................................
39
BOTH SIDES .......................................................... ...39
BOTH SIDES : Description .....................................39
BOTH SIDES : Diagnosis Procedure ................... ...39
DRIVER SIDE ......................................................... ...39
DRIVER SIDE : Description ....................................39
DRIVER SIDE : Diagnosis Procedure .....................39
PASSENGER SIDE ...................................................39
PASSENGER SIDE : Descripti on ...........................39
PASSENGER SIDE : Diagnos is Procedure ............39
WIPER DEICER DOSE NOT OPERATE ........ ...41
Diagnosis Procedure ............................................ ...41
ON IS NOT DISPLAYED WHEN PRESSING
REAR WINDOW DEFOGGER SWITCH BUT
IT IS OPERATED ...............................................
42
Diagnosis Procedure ............................................ ...42
REMOVAL AND INSTALLATION ..............43
FILAMENT ...................................................... ...43
Inspection and Repair .......................................... ...43
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DIAGNOSIS SYSTEM (BCM)DEF-7
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Fu nction (BCM - COMMON ITEM)INFOID:0000000006349773
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
×: Applicable item
*: This item is indicated, but not used.
FREEZE FRAME DATA (FFD)
The BCM records the following vehicle condition at the time a particular DTC is detected, and displays on
CONSULT-III.
Diagnosis mode Function Description
Work Support Changes the setting for each system function.
Self Diagnostic Result Displays the diagnosis results judged by BCM. Refer to BCS-57, "
DTCIndex".
CAN Diag Support Monitor Monitors the reception status of CAN communication viewed from BCM. Refer to CONSULT-III opera-
tion manual.
Data Monitor The BCM input/output signals are displayed.
Active Test The signals used to activate each device are forcibly supplied from BCM.
Ecu Identification The BCM part number is displayed.
Configuration Read and save the vehicle specification.
Write the vehicle specification when replacing BCM.
System Sub system selection item Diagnosis mode
Work Support Data Monitor Active Test
Door lock DOOR LOCK ×××
Rear window defo gger REAR DEFOGGER ××
Warning chime BUZZER ××
Interior room lamp timer INT LAMP ×××
Exterior lamp HEAD LAMP ×××
Wiper and washer WIPER ×××
Turn signal and hazard warning lamps FLASHER ×××
— AIR CONDITONER* ××
Intelligent Key system
Engine start system INTELLIGENT KEY
×××
Combination switch COMB SW ×
Body control system BCM ×
IVIS IMMU ×××
Interior room lamp battery saver BATTERY SAVER ×××
Back door TRUNK ×
Vehicle security system THEFT ALM ×××
RAP system RETAINED PWR ×
Signal buffer system SIGNAL BUFFER ××
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DEF-8
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER : CONSULT-III Function (BCM - REAR DEFOGGER)
INFOID:0000000006299428
Data monitor
ACTIVE TEST
CONSULT screen item Indication/Unit Description
Vehicle Speed km/h Vehicle speed of the moment a particular DTC is detected
Odo/Trip Meter km Total mileage (Odometer value) of the moment a particular DTC is detected
Vehicle Condition SLEEP>LOCK
Power position status of
the moment a particular
DTC is detected While turning BCM status from low power consumption mode to
normal mode (Power supply position is “LOCK”)
SLEEP>OFF While turning BCM status from low power consumption mode to
normal mode (Power supply position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACC While turning power supp
ly position from “RUN” to “ACC” (Vehicle
is stopping and selector lever is except P position.)
CRANK>RUN While turning power su
pply position from “CRANKING” to “RUN”
(From cranking up the engine to run it)
RUN>URGENT While turning power supply positi
on from “RUN“ to “ACC” (Emer-
gency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “OFF”.) to low power consumption mode
LOCK>SLEEP While turning BCM status from normal mode (Power supply posi-
tion is “LOCK”.) to low power consumption mode
LOCK Power supply position is “LOCK”
(Ignition switch OFF with steer-
ing is locked.)
OFF Power supply position is “OFF” (Ignition switch OFF with steering
is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine
stopped)
ENGINE RUN Power supply position is “RUN” (Ignition switch ON with engine
running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
IGN Counter 0 - 39 The number of times that ignition switch is turned ON after DTC is detected
The number is 0 when a malfunction is detected now.
The number increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition
whenever ignition switch OFF → ON.
The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
Monitor Item Description
REAR DEF SW Displays “Press (ON)/other (OFF)” status determined with the rear window defogger switch.
PUSH SW Indicates [ON/OFF] condition of push switch.
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DEF-12
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT-III Function (IPDM E/R)
INFOID:0000000006349777
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC RESULT
Refer to PCS-22, "DTCIndex".
DATA MONITOR
Monitor item
Oil pressure warning lamp does not operate Perform auto active test.
Does the oil pressure warning
lamp blink?YES
Harness or connector be-
tween IPDM E/R and oil
pressure switch
Oil pressure switch
IPDM E/R
NO CAN communication signal
between IPDM E/R and
BCM
CAN communication signal
between BCM and combi-
nation meter
Combination meter
Symptom Inspection contents Possible cause
Diagnosis mode Description
Ecu Identification Allows confirmation of IPDM E/R part number.
Self Diagnostic Result Displays the diagnosis results judged by IPDM E/R.
Data Monitor Displays the real-time input/output data from IPDM E/R input/output data.
Active Test IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item [Unit] MAIN SIG-
NALS Description
RAD FAN REQ
[1/2/3/4] ×Displays the value of the cooling fan speed request signal received from ECM via
CAN communication.
AC COMP REQ
[Off/On] ×Displays the status of the A/C compressor request signal received from ECM via
CAN communication.
TA I L & C L R R E Q
[Off/On] ×
Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[Off/On] ×Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[Off/On] ×Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[Off/On] ×Displays the status of the front fog light request signal received from BCM via
CAN communication.
FR WIP REQ
[Stop/1LOW/Low/Hi] ×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P] ×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK] ×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY1 -REQ
[Off/On] Displays the status of the ignition switch ON signal received from BCM via CAN
communication.
IGN RLY
[Off/On] ×
Displays the status of the ignition relay judged by IPDM E/R.
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![INFINITI QX56 2011 Factory Service Manual
DIAGNOSIS SYSTEM (IPDM E/R)DEF-13
< SYSTEM DESCRIPTION >
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ACTIVE TEST
Te s t i t e m
PUSH SW
[Off/On] Displays the status of the push-button ignition switch judged by](/img/42/57033/w960_57033-1504.png "INFINITI QX56 2011 Factory Service Manual
DIAGNOSIS SYSTEM (IPDM E/R)DEF-13
< SYSTEM DESCRIPTION >
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ACTIVE TEST
Te s t i t e m
PUSH SW
[Off/On] Displays the status of the push-button ignition switch judged by")
DIAGNOSIS SYSTEM (IPDM E/R)DEF-13
< SYSTEM DESCRIPTION >
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ACTIVE TEST
Te s t i t e m
PUSH SW
[Off/On] Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On] Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On] Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On] Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN] Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On] Displays the status of the A/T shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On] Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLK/UNKWN] Displays the status of the steering lock judged by IPDM E/R.
OIL P SW
[Open/Close] Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On] Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off/On] Displays the status of the headlamp washer request signal received from BCM via
CAN communication.
THFT HRN REQ
[Off/On] Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On] Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit] MAIN SIG-
NALS Description
Test item Operation Description
CORNERING LAMP LH
NOTE:
This item is indicated, but cannot be tested.
RH
HORN On Operates horn relay for 20 ms.
REAR DEFOGGER Off OFF
On Operates the rear window defogger relay.
FRONT WIPER Off OFF
Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
MOTOR FAN* 1OFF
2 Transmits 50% pulse duty signal (PWM signal) to the cooling fan control module.
3 Transmits 75% pulse duty signal (PWM signal) to the cooling fan control module.
4
Transmits 100% pulse duty signal (PWM signal) to the cooling fan control mod-
ule.
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 second.
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DEF-42
< SYMPTOM DIAGNOSIS >
ON IS NOT DISPLAYED WHEN PRESSING REAR WINDOW DEFOGGER
SWITCH BUT IT IS OPERATED
ON IS NOT DISPLAYED WHEN PR ESSING REAR WINDOW DEFOGGER
SWITCH BUT IT IS OPERATED
Diagnosis ProcedureINFOID:0000000006299466
1.CHECK AV CONTROL UNIT FUNCTION
Check that the AV control unit is operating normally.
Refer to AV-104, "
Work Flow (Multi AV)".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
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DLK-4
Component Function Check ................................145
Diagnosis Procedure .............................................145
COMBINATION METER BUZZER ..................146
Component Function Check .............................. ..146
Diagnosis Procedure .............................................146
INFORMATION DISPLAY ...............................147
Component Function Check .............................. ..147
Diagnosis Procedure .............................................147
KEY WARNING LAMP ....................................148
Component Function Check .............................. ..148
Diagnosis Procedure .............................................148
HAZARD FUNCTION .......................................149
Component Function Check .............................. ..149
Diagnosis Procedure .............................................149
AUTOMATIC BACK DOOR CLOSE SWITCH .150
Component Function Check .............................. ..150
Diagnosis Procedure .............................................150
Component Inspection ...........................................151
AUTOMATIC BACK DOOR MAIN SWITCH ...152
Component Function Check .............................. ..152
Diagnosis Procedure .............................................152
Component Inspection ...........................................153
AUTOMATIC BACK DOOR SWITCH .............154
Component Function Check .............................. ..154
Diagnosis Procedure .............................................154
Component Inspection ...........................................155
HALF LATCH SWITCH ...................................156
Component Function Check ................................ ..156
Diagnosis Procedure .............................................156
Component Inspection ...........................................157
TOUCH SENSOR ............................................158
RH ........................................................................... ..158
RH : Component Function Check ........................158
RH : Diagnosis Procedure .....................................158
RH : Component Inspection ..................................159
LH ........................................................................... ..159
LH : Component Function Check .........................159
LH : Diagnosis Procedure ......................................159
LH : Component Inspection ...................................160
BACK DOOR CLOSURE MOTOR ..................162
Diagnosis Procedure ........................................... ..162
AUTOMATIC BACK DOOR WARNING BUZZ-
ER ....................................................................
163
Diagnosis Procedure ........................................... ..163
Component Inspection ...........................................163
GROUND CIRCUIT ......................................... .165
Component Function Check .............................. ..165
Diagnosis Procedure .............................................165
INTEGRATED HOMELINK TRANSMITTER ....166
Component Function Check ............................... .166
Diagnosis Procedure .............................................166
SYMPTOM DIAGNOSIS ...........................168
DOOR DOES NOT LOCK/UNLOCK WITH
DOOR LOCK AND UNLOCK SWITCH .......... ..
168
ALL DOOR ............................................................. .168
ALL DOOR : Description .......................................168
ALL DOOR : Diagnosis Procedure .......................168
DRIVER SIDE ......................................................... .168
DRIVER SIDE : Description ..................................168
DRIVER SIDE : Diagnosis Procedure ...................168
PASSENGER SIDE .................................................168
PASSENGER SIDE : Descripti on .........................169
PASSENGER SIDE : Diagnos is Procedure ..........169
REAR LH ................................................................ .169
REAR LH : Description .........................................169
REAR LH : Diagnosis Procedure ..........................169
REAR RH ................................................................ .169
REAR RH : Description .........................................169
REAR RH : Diagnosis Procedure .........................169
DOOR DOES NOT LOCK/UNLOCK WITH
DOOR KEY CYLINDER OPERATION .............
171
Diagnosis Procedure ............................................ .171
DOOR DOES NOT LOCK/UNLOCK WITH
DOOR REQUEST SWITCH ..............................
172
ALL DOOR REQUEST SWITCHES ....................... .172
ALL DOOR REQUEST SWITCHES : Description .172
ALL DOOR REQUEST SWITCHES : Diagnosis
Procedure .............................................................
172
DRIVER SIDE DOOR REQUEST SWITCH ............ .173
DRIVER SIDE DOOR REQUEST SWITCH : De-
scription .................................................................
173
DRIVER SIDE DOOR REQUEST SWITCH : Diag-
nosis Procedure ....................................................
173
PASSENGER SIDE DOOR REQUEST SWITCH ... .173
PASSENGER SIDE DOOR REQUEST SWITCH :
Description ............................................................
173
PASSENGER SIDE DOOR REQUEST SWITCH :
Diagnosis Procedure .............................................
173
BACK DOOR REQUEST SWITCH ........................ .173
BACK DOOR REQUEST SWITCH : Description ..173
BACK DOOR REQUEST SWITCH : Diagnosis
Procedure .............................................................
173
DOOR DOES NOT LOCK/UNLOCK WITH IN-
TELLIGENT KEY ..............................................
175
Diagnosis Procedure ............................................ .175
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COMPONENT PARTSDLK-13
< SYSTEM DESCRIPTION >
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AUTOMATIC BACK DOOR SYSTEM
Combination meter Displays each operation method guide and warning for system malfunction
Performs operation method guide and warning with buzzer
Transmits vehicle speed signal to CAN communication line
TCM Transmits shift position signal to BCM via CAN communication line
Remote keyless entry receiver Receives Intelligent Key operation and transmits to BCM
Inside key antenna Detects if Intelligent Key is inside the vehicle
Outside key antenna Detects if Intelligent Key is outside the vehicle
Push-button ignition switch Inputs push-button ignition switch ON/OFF condition to BCM
Door switch Inputs door open/close condition to BCM
Door lock and unlock switch Detects if door lock and unlock switch is press/release
Integrated in the power window main switch and front power window switch (passenger
side)
Door request switch Detects if each door request switch is press/release
Integrated in the outside handle (driver side, passenger side) and back door opener
switch assembly
Intelligent Key warning buzzer Warns the user of the lock/unlock condition and inappropriate operations with the buzzer
sound
Intelligent Key The following functions are available when having and carrying electronic ID
Door lock/unlock
Engine start
Remote control entry function is available when operating on button
Hazard warning lamp Warns the user of the lock/unlock condition and inappropriate operations with the lamps
blink
Door lock actuator Output lock/unlock signal from BCM and locks/unlocks each door
Fuel lid lock actuator Output lock/unlock signal from BCM and locks/unlocks fuel filler lid Item Function
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SYSTEM (INTELLIGENT KEY SYSTEM)
DLK-27
< SYSTEM DESCRIPTION >
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When the BCM detects that the Intelligent Key is within the outside key antenna detection area. BCM trans-
mits the request signal to the Intelligent Key and check it is near the door.
Intelligent Key receives the request signal and transmits the key ID signal to the BCM via remote keyless
entry receiver.
BCM receives the key ID signal and compares it with the registered key ID.
BCM illuminates lamps that are set, when key ID verification is OK.
TIMER FUNCTION
BCM can operate welcome light function, using the timer function, for 9 days, after key switch is turned OFF.
The timer function resets when the engine is started
*.Operating period of timer function may differ depending
on battery size.
*: Timer function does not stop if another Intelligent Key that has a different key ID is detected within the inte-
rior antenna detection area, when starting the engine.
OPERATION CONDITION
If the following condition are satisfi ed, welcome light function is operated.
OUTSIDE KEY ANTENNA DETECTION AREA
The outside key antenna detection area of door lock/unlock function
is in the range of approximately 80 cm (31.50 in) surrounding the
driver, passenger door handles (1) and back door handle (2). How-
ever, this operating range depends on the ambient conditions.
WELCOME LIGHT FUNCTION SETTING
Welcome light function operation mode can be changed using CONSULT-III
With CONSULT-III
Refer to DLK-41, "
INTELLIGENT KEY : CONSULT-III F unction (BCM - INTELLIGENT KEY)".
Without CONSULT-III
The welcome light function ON/OFF can be s witched by performing the following operation.
1. Turn ignition switch: OFF →ON
2. Press and hold the driver side door request switch for 5 seconds or more within 20 seconds after turning the ignition switch ON.
3. The switching is complete when combination meter buzzer sounds.
WARNING FUNCTION
WARNING FUNCTION : System DescriptionINFOID:0000000006225851
OPERATION DESCRIPTION
The warning function are as per the following items and are given to the user as warning information and
warnings using combinations of Intelligent Key warning buzzer, combination meter buzzer, KEY warning lamp
and information display in combination meter.
Intelligent Key system malfunction
OFF position warning
P position warning
ACC warning
Function Operation condition
Welcome light function All door are closed
All doors is locked
Ignition switch: OFF position
Shift position: P position
Intelligent Key is outside the vehicle
Timer function is activated
JMKIA5224ZZ
Revision: 2010 May2011 QX56