2011 INFINITI QX56 Back door

DIAGNOSIS SYSTEM (AUTOMATIC BACK DOOR CONTROL UNIT)
DLK-45
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (AUTOMATIC BACK DOOR CONTROL UNIT)
CONSULT-III Function (AUTOMATIC BACK DOOR CONTROL UNIT)INFOID:0000000006225858
APPLICATION ITEM
CONSULT-III performs the following functions via CA N communication with automatic back door control unit.
DATA MONITOR
SELF-DIAG RESULT
Refer to DLK-50, "DTCIndex".
Diagnosis mode Function Description
Self Diagnostic Result Displays the diagnosis results judged by automatic back door control unit
CAN Diag Support Monitor Monitors the reception status of CAN communication viewed from automatic back door
control unit
Data Monitor The automatic back door control unit input/output signals are displayed
Ecu Identification The automatic back door control unit part number is displayed
Monitor Item Unit Description
VHCL SPEED MTR [km/h] Display the vehicle speed signal received from combination meter by nu-
merical value
VHCL SPEED ABS [km/h] Display the vehicle speed
signal received from ABS actuator and electrical
unit by numerical value
VHCL SPEED SIG [NORMAL/ER-
ROR] Indicates condition of vehicle speed from automatic back door control unit
MAIN SW [ON/OFF] Indicates condition of automatic back door main switch
AUTO BD SW [ON/OFF] Indicates condition of automatic back door switch
BK DOOR CL SW [ON/OFF] Indicates condition of automatic back door close switch
UNLOCK SEN DR [ON/OFF] Indicates condition of unlock sensor
OPEN SW [ON/OFF] Indicates condition of open switch
CLOSE SW [ON/OFF] Indicates condition of close switch
HALF LATCH SW [ON/OFF] Indicates condition of half latch switch
TOUCH SEN RH [ON/OFF/OPEN] Indicates condition of touch sensor RH
TOUCH SEN LH [ON/OFF/OPEN] Indicates condition of touch sensor LH
P RANGE IND [ON/OFF] Indicates condition of P range signal from combination meter
RKE REQ [OFF/MOVE/
REV] Indicates condition of remote keyless entry signal from BCM
IGN SW [ON/OFF] Indicates condition of IGN power supply
ENCODER A [LO/HI] Indicates condition of encoder signal from encoder A
ENCODER B [LO/HI] Indicates condition of encoder signal from encoder B
BD OPENER SW [ON/OFF] Indicates condition of back door opener switch
UNLOCK SEN BD [LOCK/
UNLOCK] NOTE:
This item is displayed, but cannot be monitored
DESTINATION [JPN/NAM] Indicates specification of destination of the automatic back door system
HAZARD [ON/OFF] Indica tes specification of hazard warning
Revision: 2010 May2011 QX56

AUTOMATIC BACK DOOR CONTROL MODULEDLK-47
< ECU DIAGNOSIS INFORMATION >
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AUTOMATIC BACK DOOR CONTROL MODULE
Reference ValueINFOID:0000000006225860
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
Monitor Item Condition Value/Status
VHCL SPEED MTR While driving Equivalent to speedometer
reading
VHCL SPEED ABS While driving Equivalent to speedometer
reading
VHCL SPEED SIG Vehicle speed from automatic back
door control unit Normal NORMAL
Error ERROR
MAIN SW Automatic back door main switch OFF OFF
ON ON
AUTO BD SW Automatic back door switch Release OFF
Press ON
BK DOOR CL SW Automatic back door close switch Release OFF
Press ON
UNLOCK SEN DR Door lock (driver) Unlock OFF
Lock ON
OPEN SW Back door Half latch/fully closed OFF
Open ON
CLOSE SW Back door Open/half latch OFF
Fully closed ON
HALF LATCH SW Back door Half latch/fully closed OFF
Open ON
TOUCH SEN RH Touch sensor RH Other than bellow OFF
Detect obstruction ON
TOUCH SEN LH Touch sensor LH Other than bellow OFF
Detect obstruction ON
P RANGE IND Selector lever Other than P position OFF
P position ON
RKE REQ Intelligent Key button (back door) Release OFF
Press (more than 0.5 sec-
ond)
MOVE
Press (just after) REV
IGN SW Ignition switch Other than ON position OFF
ON position ON
ENCODER A Automatic back door Not operate No change HI or LO
Operate Change HI or LO
ENCODER B Automatic back door Not operate No change HI or LO
Operate Change HI or LO
BD OPENER SW Back door opener switch Release OFF
Press ON
UNLOCK SEN BD Door lock (back door) Unlock OFF
Lock ON
Revision: 2010 May2011 QX56

DLK-48
< ECU DIAGNOSIS INFORMATION >
AUTOMATIC BACK DOOR CONTROL MODULE
TERMINAL LAYOUT
PHYSICAL VALUES
DESTINATIONCircuit between automatic back
door control module terminal 22
and ground Normal NAM
Open or short JPN
HAZARD Circuit between automatic back
door control module terminal 23 and ground Normal ON
Open or short OFF
Monitor Item Condition Value/Status
JMKIA5246ZZ
Te r m i n a l N o .
(Wire color) Description
Condition Vo l ta g e
(Approx.)
(+) (–) Signal name Input/
Output
1
(L) Ground
Automatic back door
warning buzzer OutputAutomatic back
door warning
buzzer Sounding 0 V
Not sounding Battery voltage
2
(Y/B) Ground Automatic back door
switch InputAutomatic back
door switch Pressed 0 V
Released Battery voltage
4
(GR) Ground Automatic back door
close switch InputAutomatic back
door close switch Pressed 0 V
Released Battery voltage
6
(P) Ground CAN - L
Input/
Output ——
7
(L) Ground CAN - H Input/
Output ——
8
(L/W) Ground Half latch switch signal Input Back door Open 0 V
Fully closed/half
latch
Battery voltage
9
(GR/ L) Ground Power supply (IGN) Input Ignition switch ON Battery voltage
10
(Y) Ground Power supply (BAT) Input — Battery voltage
11
(R) Ground
Back door closure mo-
tor (open) Output Back door Open operation Battery voltage
Other than above 0 V
12
(V) Ground
Back door closure mo-
tor (close) Output Back door Close operation Battery voltage
Other than above 0 V
14
(GW) Ground Touch sensor LH sig-
nal
Input Touch sensor LH Detect obstruc-
tion
0 V
Other than above 6 V
15
(L/R) Ground Touch sensor ground Input — 0 V
Revision: 2010 May2011 QX56

AUTOMATIC BACK DOOR CONTROL MODULEDLK-49
< ECU DIAGNOSIS INFORMATION >
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Fail SafeINFOID:0000000006225861
DTC Inspection Priority ChartINFOID:0000000006225862
If some DTCs are displayed at the same time, per form inspections one by one based on the following priority
chart.
16
(LG) Ground
Touch sensor RH sig-
nal Input Touch sensor RH Detect obstruc-
tion
0 V
Other than above 6 V
17
(O) Ground Automatic back door
main switch
InputAutomatic back
door main switch ON Battery voltage
OFF 0 V
19
(L/Y) Ground Close switch signal Input Back door Fully closed 0 V
Open/half latch Battery voltage
20
(G/Y) Ground Open switch signal Input Back door Open 0 V
Half latch/fully
closed
Battery voltage
22
(B) Ground Ground (destination) — — 0 V
23
(B) Ground
Ground (Hazard re-
minder) —— 0 V
28
(R/W) Ground Power supply (BAT) Input — Battery voltage
34
(B) Ground Ground — — 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Vo l ta g e
(Approx.)
(+) (–) Signal name Input/
Output
Display contents of CONSUL T-III Fail-safe Cancellation
B2401 IGN OPEN Intermittent clutch function All following condition are satisfied
 Power supply condition of auto-
matic back door control unit: OFF
 BCM receive ignition position sig- nal (OFF) via CAN
B2403 PULSE ENCODER Inhibit automatic back door operation When receiving the pulse from en-
coders A and B normally (5 pulses)
B2409 HALF LATCH SW Intermittent clutch function Half latch switch is ON from OFF
B2416 TOUCH SEN R OPEN During close operation: Intermittent clutch
function
Normal return
B2417 TOUCH SEN L OPEN During close operation: Intermittent clutch
function Normal return
B2419 OPEN SW Inhibit automatic back door operation Erase DTC, reconnect battery
B2420 CLOSE SW Inhibit automatic back door operation Erase DTC, reconnect battery
B2421 CLUTCH TIME OUT Intermittent clutch function Reception of next operation request
B2422 BACK DOOR STATE Intermittent clutch function Detect back door fully closed posi-
tion
B2423 ABD MTR TIME OUT Intermittent clutch function Reception of next operation request
B2424 CLSR CONDITION Inhibit automatic back door operation Normal return or reconnect battery
Revision: 2010 May2011 QX56

DLK-50
< ECU DIAGNOSIS INFORMATION >
AUTOMATIC BACK DOOR CONTROL MODULE
DTC Index
INFOID:0000000006225863
NOTE: Details of time display
 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it . It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Priority DTC
1  B2425 AUTO BK DR CNT UNIT
 U1000: CAN COMM
 U1010: CONTROL UNIT (CAN)
 B2401 IGN OPEN
2  B2403 PULSE ENCODER
 B2409 HALF LATCH SW
 B2416 TOUCH SEN R OPEN
 B2417 TOUCH SEN L OPEN
 B2419 OPEN SW
 B2420 CLOSE SW
 B2421 CLUTCH TIME OUT
 B2422 BACK DOOR STATE
 B2423 ABD MTR TIME OUT
 B2424 CLSR CONDITION
CONSULT-III display Fail-safe Item Reference page
U1000: CAN COMM — CAN communication circuit DLK-82
U1010: CONTROL UNIT(CAN) — Internal CAN communication circuitDLK-83
B2401: IGN OPEN×IGN power supply circuit DLK-84
B2403: PULSE ENCODER×Encoder signal DLK-85
B2409: HALF LATCH SW×Half latch switch signal DLK-86
B2416: TOUCH SEN R OPEN×Touch sensor RH DLK-88
B2417: TOUCH SEN L OPEN×Touch sensor LH DLK-90
B2419: OPEN SW×Open switch signal DLK-92
B2420: CLOSE SW×Close switch signal DLK-95
B2421: CLUTCH TIME OUT×Clutch operation time DLK-97
B2422: BACK DOOR STATE×Back door state DLK-98
B2423: ABD MTR TIME OUT×Automatic back door motor operation time DLK-99
B2424: CLSR CONDITION×Closure condition DLK-100
B2425: AUTO BCK DR CNT UNIT — Automatic back door control unit DLK-103
Revision: 2010 May2011 QX56

DLK-66
< WIRING DIAGRAM >
AUTOMATIC BACK DOOR SYSTEM
AUTOMATIC BACK DOOR SYSTEM
Wiring Diagram - AUTOMATIC BACK DOOR SYSTEM -INFOID:0000000006225865
JCKWM4445GB
Revision: 2010 May2011 QX56

AUTOMATIC BACK DOOR SYSTEMDLK-67
< WIRING DIAGRAM >
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JCKWM4446GB
Revision: 2010 May2011 QX56

DLK-68
< WIRING DIAGRAM >
AUTOMATIC BACK DOOR SYSTEM
JCKWM4447GB
Revision: 2010 May2011 QX56