Infiniti QX56 (Z62). Manual — part 424
DLK-162
< DTC/CIRCUIT DIAGNOSIS >
BACK DOOR CLOSURE MOTOR
BACK DOOR CLOSURE MOTOR
Diagnosis Procedure
INFOID:0000000006225989
1.
CHECK BACK DOOR CLOSURE MOTOR 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
>> Replace back door lock assembly.
NO
>> GO TO 2.
2.
CHECK BACK DOOR CLOSURE MOTOR 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.
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.
(+)
(–)
Condition
Voltage
(Approx.)
Back door lock assembly
Connector
Terminal
D157
1
Ground
Back door opener
switch
Pressed
Battery voltage
2
Released
0 V
Automatic back door control module
Back door lock assembly
Continuity
Connector
Terminal
Connector
Terminal
B26
11
D157
1
Existed
12
2
Automatic back door control module
Ground
Continuity
Connector
Terminal
B26
11
Not existed
12
AUTOMATIC BACK DOOR WARNING BUZZER
DLK-163
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
AUTOMATIC BACK DOOR WARNING BUZZER
Diagnosis Procedure
INFOID:0000000006225990
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10 A fuse, [No.9, 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 AUTOMATIC BACK DOOR WARNING BUZZER POWER SUPPLY CIRCUIT
1.
Disconnect automatic back door warning buzzer connector.
2.
Check voltage between automatic back door warning buzzer harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK AUTOMATIC BACK DOOR WARNING BUZZER OUTPUT SIGNAL CIRCUIT
1.
Disconnect automatic back door control module connector.
2.
Check continuity between automatic back door control module harness connector and automatic back
door warning buzzer harness connector.
3.
Check continuity between automatic back door control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK AUTOMATIC BACK DOOR WARNING BUZZER
DLK-163, "Component Inspection"
Is the inspection result normal?
YES
>> Replace automatic back door control module. Refer to
DLK-262, "Removal and Installation"
.
NO
>> Replace automatic back door warning buzzer.
Component Inspection
INFOID:0000000006225991
1.
CHECK AUTOMATIC BACK DOOR WARNING BUZZER
1.
Turn ignition switch OFF.
2.
Disconnect automatic back door warning buzzer connector.
3.
Check battery power supply directly to automatic back door warning buzzer terminals and check the oper-
ation.
(+)
(–)
Voltage
(Approx.)
Automatic back door warning buzzer
Connector
Terminal
D159
1
Ground
Battery voltage
Automatic back door control module
Automatic back door warning buzzer
Continuity
Connector
Terminal
Connector
Terminal
B26
1
D159
2
Existed
Automatic back door control module
Ground
Continuity
Connector
Terminal
B26
1
Not existed
DLK-164
< DTC/CIRCUIT DIAGNOSIS >
AUTOMATIC BACK DOOR WARNING BUZZER
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace automatic back door warning buzzer.
Automatic back door warning buzzer
Operation
Terminal
(+)
(-)
1
2
Buzzer sounds
GROUND CIRCUIT
DLK-165
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
GROUND CIRCUIT
Component Function Check
INFOID:0000000006225992
1.
CHECK FUNCTION
1.
Select “AUTOMATIC BACK DOOR CONTROL UNIT” using CONSULT-III.
2.
Select “DESTINATION” and “HAZARD” in “DATA MONITOR” mode.
3.
Check that the function operates normally according to the following conditions.
Is the inspection result normal?
YES
>> Automatic back door ground circuit is OK.
NO
>> Refer to
DLK-165, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006225993
1.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect automatic back door control module 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.
Monitor item
Condition
Status
DESTINATION
Circuit 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
Automatic back door control module
Ground
Continuity
Connector
Terminal
B26
22
Existed
23
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