Nissan Sentra. Instruction — part 239
DLK-72
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2621 INSIDE ANTENNA
B2621 INSIDE ANTENNA
DTC Logic
INFOID:0000000009756373
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
1. Select INTELLIGENT KEY of BCM using CONSULT.
2. Select INSIDE ANT DIAGNOSIS in WORK SUPPORT mode.
3. Perform inside key antenna (INSIDE ANT DIAGNOSIS) on WORK SUPPORT of INTELLIGENT KEY.
4. Check BCM for DTC.
Is inside key antenna DTC detected?
YES
>> Refer to
.
NO
>> Inside key antenna (instrument center) is OK.
Diagnosis Procedure
INFOID:0000000009756374
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 INSIDE KEY ANTENNA INPUT SIGNAL 1
1. Turn ignition switch ON.
2. Check signal between BCM harness connector and ground using oscilloscope.
DTC
CONSULT display
description
DTC detecting condition
Possible cause
B2621
INSIDE ANTENNA 1
An excessive high or low voltage from inside anten-
na (instrument center) is sent to BCM
• Inside key antenna (instrument
center)
• Harness between BCM and inside
key antenna (instrument center)
• BCM
B2621 INSIDE ANTENNA
DLK-73
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-73, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK INSIDE KEY ANTENNA CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and inside key antenna (instrument center) connector.
3. Check continuity between BCM harness connector and inside key antenna (instrument center) harness
connector.
4. Check continuity between BCM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2
1. Replace inside key antenna (instrument center). (New antenna or other antenna)
2. Connect BCM connector and inside key antenna (instrument center) connector.
3. Turn ignition switch ON.
4. Check signal between BCM harness connector and ground using oscilloscope.
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M83
46
47
Ground
When Intelligent Key is in the an-
tenna detection area
When Intelligent Key is not in the
antenna detection area
JMKIA3839GB
JMKIA5951GB
BCM
Inside key antenna (instrument center)
Continuity
Connector
Terminal
Connector
Terminal
M83
47
M86
1
Yes
46
2
BCM
Ground
Continuity
Connector
Terminal
M83
47
No
46
DLK-74
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2621 INSIDE ANTENNA
Is the inspection result normal?
YES
>> Replace inside key antenna (instrument center).
NO
>> Replace BCM. Refer to
BCS-73, "Removal and Installation"
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M83
47
46
Ground
When Intelligent Key is in the an-
tenna detection area
When Intelligent Key is not in the
antenna detection area
JMKIA3839GB
JMKIA5951GB
B2622 INSIDE ANTENNA
DLK-75
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
B2622 INSIDE ANTENNA
DTC Logic
INFOID:0000000009756375
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
1. Select INTELLIGENT KEY of BCM using CONSULT.
2. Select INSIDE ANT DIAGNOSIS in WORK SUPPORT mode.
3. Perform inside key antenna (INSIDE ANT DIAGNOSIS) on WORK SUPPORT of INTELLIGENT KEY.
4. Check BCM for DTC.
Is inside key antenna DTC detected?
YES
>> Refer to
.
NO
>> Inside key antenna (console) is OK.
Diagnosis Procedure
INFOID:0000000009756376
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 INSIDE KEY ANTENNA INPUT SIGNAL 1
1. Turn ignition switch ON.
2. Check signal between BCM harness connector and ground using oscilloscope.
DTC
CONSULT display
description
DTC detecting condition
Possible cause
B2622
INSIDE ANTENNA 2
An excessive high or low voltage from inside anten-
na (console) is sent to BCM
• Inside key antenna (console)
• Harness between BCM and inside
key antenna (console)
• BCM
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