Nissan Leaf. Manual — part 393
DIAGNOSIS AND REPAIR WORK FLOW
DLK-67
< BASIC INSPECTION >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
Inspect according to Diagnostic Procedure of the system.
Is malfunctioning part detected?
YES
>> GO TO 8.
NO
>> Check according to
GI-53, "Intermittent Incident"
.
8.
REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.
3. Check DTC. If DTC is detected, erase it.
>> GO TO 9.
9.
FINAL CHECK
When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.
Is DTC detected and does symptom remain?
YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO
>> Before returning the vehicle to the customer, always erase DTC.
DLK-68
< DTC/CIRCUIT DIAGNOSIS >
B2621 INSIDE ANTENNA
DTC/CIRCUIT DIAGNOSIS
B2621 INSIDE ANTENNA
DTC Logic
INFOID:0000000010119741
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”.
3. Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) in “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:0000000010119742
Regarding Wiring Diagram information, refer to
.
1.
CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1
1. Turn power switch ON.
2. Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
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 or connector
[Inside key antenna (instrument
center) circuit is open or shorted]
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M23
84
85
Ground
When Intelligent Key is in the
antenna detection area
When Intelligent Key is not in
the antenna detection area
JMKIA3839GB
JMKIA5951GB
B2621 INSIDE ANTENNA
DLK-69
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
DLK
N
O
P
YES
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
NO
>> GO TO 2.
2.
CHECK INSIDE KEY ANTENNA CIRCUIT
1. Turn power 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 power switch ON.
4. Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> Replace inside key antenna (instrument center). Refer to
.
NO
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
BCM
Inside key antenna (instrument center)
Continuity
Connector
Terminal
Connector
Terminal
M23
84
M86
1
Yes
85
2
BCM
Ground
Continuity
Connector
Terminal
M23
84
No
85
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M23
84
85
Ground
When Intelligent Key is in the
antenna detection area
When Intelligent Key is not in
the antenna detection area
JMKIA3839GB
JMKIA5951GB
DLK-70
< DTC/CIRCUIT DIAGNOSIS >
B2622 INSIDE ANTENNA
B2622 INSIDE ANTENNA
DTC Logic
INFOID:0000000010119743
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”.
3. Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) in “Work support” of “INTELLIGENT KEY”.
4. Check BCM for DTC.
Is inside key antenna DTC detected?
YES
>> Refer to
.
NO
>> Inside key antenna (rear seat) is OK.
Diagnosis Procedure
INFOID:0000000010119744
Regarding Wiring Diagram information, refer to
.
1.
CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1
1. Turn power switch ON.
2. Check signal between BCM harness connector and ground using oscilloscope.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-72, "Removal and Installation"
NO
>> GO TO 2.
DTC
CONSULT display
description
DTC detecting condition
Possible cause
B2622
INSIDE ANTENNA 2
An excessive high or low voltage from inside anten-
na (rear seat) is sent to BCM.
• Inside key antenna (rear seat)
• Harness or connector
[Inside key antenna (rear seat) cir-
cuit is open or shorted]
(+)
(–)
Condition
Signal
(Reference value)
BCM
Connector
Terminal
M23
86
87
Ground
When Intelligent Key is in the an-
tenna detection area
When Intelligent Key is not in the
antenna detection area
JMKIA3839GB
JMKIA5951GB
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