Nissan Maxima. Manual — part 336
B2623 INSIDE KEY ANTENNA 3
DLK-63
< DTC/CIRCUIT DIAGNOSIS >
C
D
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DLK
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O
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B2623 INSIDE KEY ANTENNA 3
Description
INFOID:0000000009471631
Detects whether Intelligent Key is inside the vehicle.
Installed in the trunk room.
DTC Logic
INFOID:0000000009471632
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
• Check Intelligent Key relative signal strength
• Confirm vehicle Intelligent Key antenna signal strength
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1. Perform rear parcel shelf antenna INSIDE ANT DIAGNOSIS on “Work Support” of “INTELLIGENT KEY”.
2. Perform “INTELLIGENT KEY” Self Diagnostic Result.
Is rear parcel shelf antenna DTC detected?
YES
>> Refer to
.
NO
>> Rear parcel shelf antenna is OK.
Diagnosis Procedure
INFOID:0000000009471633
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
• Check Intelligent Key relative signal strength
• Confirm vehicle Intelligent Key antenna signal strength
Regarding Wiring Diagram information, refer to
.
1.
CHECK REAR PARCEL SHELF ANTENNA INPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Check signal between BCM connector and ground with oscillo-
scope.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2623
INSIDE ANTENNA 3
CIRCUIT
An excessive high or low voltage from rear parcel
shelf antenna is sent to BCM.
• Rear parcel shelf antenna
• Between BCM and rear parcel
shelf antenna
ALKIA0329ZZ
DLK-64
< DTC/CIRCUIT DIAGNOSIS >
B2623 INSIDE KEY ANTENNA 3
Is the inspection result normal?
YES
>> Check the condition of harness and connector.
NO
>> GO TO 2
2.
CHECK REAR PARCEL SHELF ANTENNA CIRCUIT
1. Disconnect BCM and rear parcel shelf antenna connector.
2. Check continuity between BCM connector and rear parcel shelf antenna connector.
3. Check continuity between BCM connector and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness between BCM and rear parcel shelf antenna.
3.
CHECK REAR PARCEL SHELF ANTENNA INPUT SIGNAL 2
1. Replace rear parcel shelf antenna (new antenna or other antenna).
2. Connect BCM and rear parcel shelf antenna connector.
Terminals
Condition
Signal
(Reference value.)
(+)
(–)
BCM connector
Terminal
M21
Rear parcel
shelf antenna
115
Ground
Place Intelligent Key inside the
vehicle.
Place Intelligent Key outside
the vehicle.
JMKIA0062GB
JMKIA0063GB
BCM connector
Terminal
Rear parcel shelf antenna
connector
Terminal
Continuity
M21
114
B29
Trunk room
2
Yes
115
1
BCM connector
Terminal
Ground
Continuity
M21
Trunk room
114
No
115
B2623 INSIDE KEY ANTENNA 3
DLK-65
< DTC/CIRCUIT DIAGNOSIS >
C
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DLK
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3. Check signal between BCM connector and ground with oscillo-
scope.
Is the inspection result normal?
YES
>> Replace rear parcel shelf antenna. Refer to
INT-28, "Removal and Installation"
.
NO
>> Replace BCM. Refer to
BCS-79, "Removal and Installation"
ALKIA0329ZZ
Terminals
Condition
Signal
(Reference value.)
(+)
(–)
BCM connector
Terminal
M21
Trunk room
115
Ground
Place Intelligent Key inside
the vehicle.
Place Intelligent Key outside
the vehicle.
JMKIA0062GB
JMKIA0063GB
DLK-66
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000010056660
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE AND FUSIBLE LINK
Check if the following BCM fuses or fusible link are blown.
Is the fuse or fusible link blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
Special Repair Requirement
INFOID:0000000010056661
1.
REQUIRED WORK WHEN REPLACING BCM
Initialize control unit. Refer to
BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) :
>> Work End.
Terminal No.
Signal name
Fuse and fusible link No.
1
Battery power supply
H
11
10
24
7
Terminals
Voltage
(Approx.)
(+)
(
−)
BCM
Ground
Connector
Terminal
M16
1
Battery voltage
M17
11
M18
24
BCM
Ground
Continuity
Connector
Terminal
M17
13
Yes
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