Infiniti QX56 (Z62). Manual — part 408
DLK-98
< DTC/CIRCUIT DIAGNOSIS >
B2422 BACK DOOR STATE
B2422 BACK DOOR STATE
DTC Logic
INFOID:0000000006225899
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES
>> Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006225900
1.
REPLACE AUTOMATIC BACK DOOR CONTROL MODULE
When DTC [B2422] is detected, replace automatic back door control module.
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
DTC
CONSULT-III display
description
DTC detecting condition
Possible cause
B2422
BACK DOOR STATE
When the automatic back door control unit detects
back door position malfunction according to the
pulse signal
• Back door mechanism
• Automatic back door control mod-
ule
B2423 AUTOMATIC BACK DOOR MOTOR OPERATION TIME
DLK-99
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
B2423 AUTOMATIC BACK DOOR MOTOR OPERATION TIME
DTC Logic
INFOID:0000000006225901
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES
>> Refer to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID: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)
DLK-100
< DTC/CIRCUIT DIAGNOSIS >
B2424 CLOSURE CONDITION
B2424 CLOSURE CONDITION
DTC Logic
INFOID:0000000006225903
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self Diagnostic Result” mode of “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-
III.
Is DTC detected?
YES
>> Refer to
DLK-100, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006225904
1.
CHECK OPEN/CLOSE SWITCH SIGNAL
1.
Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2.
Select “CLOSE SW”, “OPEN SW” in “DATA MONITOR” mode.
3.
Check that the function operates normally 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
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 OPEN/CLOSE SWITCH CIRCUIT
1.
Disconnect automatic back door control module connector.
DTC
CONSULT-III display de-
scription
DTC detecting condition
Possible cause
B2424
CLSR CONDITION
When the following conditions are detected after
OPEN/CLOSE operation of the back door closure
motor
• Open switch and close switch are ON
• Harness or connector
(Open switch or close switch
circuit is open or shorted)
• Back door lock assembly
Monitor item
Condition
Status
OPEN SW
Back door
Half latch/fully closed
OFF
Open
ON
CLOSE SW
Open/half latch
OFF
Fully closed
ON
(+)
(–)
Voltage
(Approx.)
Back door lock assembly
Connector
Terminal
D157
4
Ground
Battery voltage
5
B2424 CLOSURE CONDITION
DLK-101
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
2.
Check continuity between automatic back door control module harness connector and back door lock
assembly harness connector.
3.
Check continuity between automatic back door control module harness connector and ground.
Is the inspection result normal?
YES
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
NO
>> Repair or replace harness.
4.
CHECK GROUND CIRCUIT
Check continuity between back door lock assembly harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness.
5.
CHECK OPEN/CLOSE SWITCH
DLK-101, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace back door lock assembly.
6.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000006225905
COMPONENT INSPECTION
1.
CHECK OPEN/CLOSE SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect back door lock assembly.
3.
Check continuity between back door lock assembly terminals.
Automatic back door control module
Back door lock assembly
Continuity
Connector
Terminal
Connector
Terminal
B26
19
D157
5
Existed
20
4
Automatic back door control module
Ground
Continuity
Connector
Terminal
B26
19
Not existed
20
Back door lock assembly
Ground
Continuity
Connector
Terminal
D157
8
Existed
Back door lock assembly
Condition
Continuity
Terminal
5
8
Back door lock
Fully closed
Existed
Open/half latch
Not existed
4
Open
Existed
Fully closed/half latch
Not existed
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