Infiniti QX56 (Z62). Manual - part 405
DLK-86
< DTC/CIRCUIT DIAGNOSIS >
B2409 HALF LATCH SWITCH
B2409 HALF LATCH SWITCH
DTC Logic
INFOID:0000000006225882
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: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 normally 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
(+)
(–)
Voltage
(Approx.)
Back door lock assembly
Connector
Terminal
D157
6
Ground
Battery voltage