battery INFINITI QX56 2011 Factory Service Manual

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 >
C
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G H
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L
M A
B
DLK
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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-80
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : De-
scription
INFOID:0000000006225867
When the battery is disconnected from the negative terminal, it is necessary to perform initial setting to oper-
ate automatic back door control system normally.
NOTE:
The following specified operations are not performed under the non-initialized condition.
 Automatic back door open/close function
 Anti-pinch function
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Work
Procedure
INFOID:0000000006225868
1.INITIALIZATION
1. Fully close the back door manually. (when back door is already fully closed, this operation is not neces-
sary)
2. Perform automatic back door open/close operation of back door.
3. Check for noise or malfunctioning during operation.
4. Check that hazard lamp blinks and that warning buzzer operates.
NOTE:
Never touch back door, or allow foreign materials to be pinched in door, when performing automatic back door
open/close operation of back door, until it is in the fully closed or fully open position.
>> WORK END
ADDITIONAL SERVICE WHEN RE PLACING CONTROL UNIT (BCM)
ADDITIONAL SERVICE WHEN REPLACIN G CONTROL UNIT (BCM) : Description
INFOID:0000000006225869
Perform the system initialization when replacing BCM, replacing Intelligent Key or registering an additional
Intelligent Key.
ADDITIONAL SERVICE WHEN REPLACIN G CONTROL UNIT (BCM) : Work Proce-
dure
INFOID:0000000006225870
Refer to the CONSULT-III operation manual for the initialization procedure.
ADDITIONAL SERVICE WHEN REPLAC ING (AUTOMATIC BACK DOOR CON-
TROL MODULE)
ADDITIONAL SERVICE WHEN REPLACIN G (AUTOMATIC BACK DOOR CONTROL
MODULE) : Description
INFOID:0000000006225871
When replacing control module, or removing connector termi nal, it is necessary to perform initial setting to
operate automatic back door system normally.
NOTE:
The following specified operations are not performed under the non-initialized condition.
 Automatic back door open/close function
 Anti-pinch function
ADDITIONAL SERVICE WHEN REPLACIN G (AUTOMATIC BACK DOOR CONTROL
MODULE) : Work Procedure
INFOID:0000000006225872
1.INITIALIZATION
Revision: 2010 May2011 QX56

DLK-84
< DTC/CIRCUIT DIAGNOSIS >
B2401 IGNITION POWER SUPPLY CIRCUIT
B2401 IGNITION POWER SUPPLY CIRCUIT
DTC LogicINFOID:0000000006225878
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait for at least 1 second.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-84, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225879
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse, [No. 4, located in fuse block (J/B)].
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect automatic back door control unit connector.
3. Check voltage between automatic back door control unit harness connector and ground.
Is the measurement value normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace harness.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2401 IGN OPEN When the automatic back door control unit detects
the following condition for 0.3 second or more
 Power supply condition (OFF) of automatic back
door control unit and Ignition position signal (ON)
from BCM via CAN Fuse
 Harness or connectors
(Ignition power supply condition
circuit is open or shorted)
(+)
(− ) Condition Vo l ta g e
(Approx.)
Automatic back door control unit
Connector Terminal
B26 9 Ground Ignition switch ON Battery voltage
OFF 0 V
Revision: 2010 May2011 QX56

B2403 ENCODERDLK-85
< DTC/CIRCUIT DIAGNOSIS >
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B2403 ENCODER
DTC LogicINFOID:0000000006225880
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-85, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225881
1.CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check automatic back door control module power supply and ground circuit. Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC CONSULT-III dis-
play description DTC detecting condition Possible cause
B2403 PULSE ENCODER When the automatic back door control unit can not re-
ceive the signal from the encoder just after starting the
open/close operation  Battery voltage (low battery)
 Automatic back door control mod-
ule
Revision: 2010 May2011 QX56

DLK-86
< DTC/CIRCUIT DIAGNOSIS >
B2409 HALF LATCH SWITCH
B2409 HALF LATCH SWITCH
DTC LogicINFOID:0000000006225882
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-86, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225883
1.CHECK HALF LATCH SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “HALF LATCH SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK HALF LATCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK HALF LATCH SWITCH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door control module harness connector and back door lock
assembly harness connector.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2409 HALF LATCH SW When the automatic back door control unit can not
detects the half latch switch ON condition even
when the back door is in the open position  Half latch switch
 Harness or connectors
(Half latch switch circuit is open)
 Automatic back door control mod-
ule
Monitor item Condition Status
HALF LATCH SW Back door Fully closed/Half latch OFF
Open ON
(+)
(–)Voltag e
(Approx.)
Back door lock assembly
Connector Terminal D157 6 Ground Battery voltage
Revision: 2010 May2011 QX56

DLK-92
< DTC/CIRCUIT DIAGNOSIS >
B2419 OPEN SWITCH
B2419 OPEN SWITCH
DTC LogicINFOID:0000000006225891
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-92, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225892
1.CHECK OPEN SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “OPEN SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CONTROL MODULE OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2419 OPEN SW When the automatic back door control unit detects
any of the following conditions
 The change of open switch cannot be detected
for 1 second or more after starting the closure
open output for the 3rd time in a row
 The change of open switch cannot be detected for 0.5 second or more after starting the closure
close output for the 3rd time in a row
 The condition that the open switch is in the ON position and the close switch is in the OFF posi-
tion is detected when starting the closure open/
close output for the 3rd time in a row  Open switch
 Harness or connectors
(Open switch circuit is open or
shorted)
 Automatic back door control mod- ule
Monitor item Condition Status
OPEN SW Back door Fully closed/Half latch OFF
Open ON
(+)
(–)Voltag e
(Approx.)
Back door lock assembly
Connector Terminal D157 4 Ground Battery voltage
Revision: 2010 May2011 QX56

B2420 CLOSE SWITCHDLK-95
< DTC/CIRCUIT DIAGNOSIS >
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M A
B
DLK
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B2420 CLOSE SWITCH
DTC LogicINFOID:0000000006225894
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-95, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225895
1.CHECK CLOSE SWITCH SIGNAL
1. Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2. Select “CLOSE SW” in “DATA MONITOR” mode.
3. Check that the function operates normall y according to the following conditions.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK AUTOMATIC BACK DOOR CONTROL MODULE OUTPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect back door lock assembly connector.
3. Check voltage between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK CLOSE SWITCH CIRCUIT
1. Disconnect automatic back door control module connector.
2. Check continuity between automatic back door control module harness connector and back door lock
assembly harness connector.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2420 CLOSE SW When the automatic back door control unit detects
any of the following conditions
 The change of close switch cannot be detected
for 3 second or more after starting the closure
close output for the 3rd time in a row  Close switch
 Harness or connectors
(Close switch circuit is open or
shorted)
 Automatic back door control mod- ule
Monitor item Condition Status
CLOSE SW Back door Open/Half latch OFF
Fully closed ON
(+)
(–)Voltag e
(Approx.)
Back door lock assembly
Connector Terminal D157 5 Ground Battery voltage
Revision: 2010 May2011 QX56

B2421 CLUTCH OPERATION TIMEDLK-97
< DTC/CIRCUIT DIAGNOSIS >
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B2421 CLUTCH OPERATION TIME
DTC LogicINFOID:0000000006225897
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-97, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225898
1.CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check automatic back door control module power supply and ground circuit. Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC CONSULT-III display
description DTC detecting condition Possible cause
B2421 CLUTCH TIME OUT When the automatic back door control unit detects
the power distribution to the clutch for 2 minutes or
more  Automatic back door control mod-
ule
 Battery voltage (low voltage)
Revision: 2010 May2011 QX56

B2423 AUTOMATIC BACK DOOR MOTOR OPERATION TIMEDLK-99
< DTC/CIRCUIT DIAGNOSIS >
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B2423 AUTOMATIC BACK DOOR MOTOR OPERATION TIME
DTC LogicINFOID:0000000006225901
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self Diagnostic Result” mode of “AUTOMAT IC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES >> Refer to DLK-99, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000006225902
1.CHECK AUTOMATIC BACK DOOR CONTROL MODULE POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check automatic back door control module power supply and ground circuit. Refer to DLK-116, "
AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure".
Is the inspection result normal?
YES >> Replace automatic back door control module. Refer to DLK-262, "Removal and Installation".
NO >> Repair or replace the malfunctioning parts.
DTC CONSULT-III display de-
scription DTC detecting condition Possible cause
B2423 ABD MTR TIME OUT When the automatic back door control unit and au-
tomatic back door motor operate in the same direc-
tion for 30 seconds or more continuously  Back door mechanism
 Automatic back door control
module
 Battery voltage (low battery)
Revision: 2010 May2011 QX56