Nissan Leaf. Instruction — part 1078
SEC-74
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2196 DONGLE UNIT
NO
>> Repair or replace harness.
3.
CHECK DONGLE UNIT GROUND CIRCUIT
Check continuity between dongle unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace dongle unit. Refer to
SEC-117, "Removal and Installation"
.
NO
>> Repair or replace harness.
Dongle unit
Ground
Continuity
Connector
Terminal
M91
4
Yes
B2198 NATS ANTENNA AMP.
SEC-75
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
B2198 NATS ANTENNA AMP.
DTC Logic
INFOID:0000000010119262
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Make the conditions that BCM enters in the low power consumption mode (BCM sleep condition), and
wait 15 to 60 minutes. Refer to
BCS-12, "POWER CONSUMPTION CONTROL SYSTEM : System
.
2. Turn power switch ON.
3. Check DTC in “Self Diagnostic Result” of “BCM” using CONSULT.
Is DTC detected?
YES
>> Go to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010119263
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE
1. Turn power switch OFF.
2. Check that the following fuse in the fuse, fusible link and relay block 2 is not blown.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the cause of blowing.
2.
CHECK NATS ANTENNA AMP. POWER SUPPLY
1. Disconnect NATS antenna amp. connector.
2. Check voltage between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK NATS ANTENNA AMP. POWER SUPPLY CIRCUIT
Check the following.
• 12V battery
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B2198
IMMOBI ANT NG
Inactive communication between NATS
antenna amp. and BCM is detected when
BCM enters in the low power consumption
mode (BCM sleep condition)
• Harness or connectors
(NATS antenna amp. circuit is open or
shorted.)
• NATS antenna amp.
• BCM
Signal name
Fuse No.
Battery power supply
77
(+)
(–)
Voltage (V)
(Approx.)
NATS antenna amp.
Connector
Terminal
M49
1
Ground
Battery voltage
SEC-76
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2198 NATS ANTENNA AMP.
• Harness for short or open between 12V battery and 20A fuse (No. 77)
• 20A fuse (No. 77)
• Harness for short or open between 20A fuse (No. 77) and NATS antenna amp.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK NATS ANTENNA AMP. GROUND CIRCUIT
Check continuity between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness.
5.
CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 1
Check voltage signal between NATS antenna amp. harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 1
1. Disconnect BCM connector.
2. Check continuity between NATS antenna amp. harness connector and BCM connector.
3. Check continuity between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace harness.
7.
CHECK NATS ANTENNA AMP. COMMUNICATION SIGNAL 2
Check voltage signal between NATS antenna amp. harness connector and ground using an oscilloscope.
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M49
4
Yes
(+)
(–)
Condition
Voltage (V)
(Approx.)
NATS antenna amp.
Connector
Terminal
M49
2
Ground
Intelligent Key: Intelligent
Key battery is removed
Brake pedal: Depressed
NOTE:
Waveform varies each time
when brake pedal is depressed
Brake pedal: Released
Battery voltage
JMKIA6232JP
NATS antenna amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M49
2
M24
21
Yes
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M49
2
No
B2198 NATS ANTENNA AMP.
SEC-77
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Is the inspection result normal?
YES
>> Replace NATS antenna amp. Refer to
SEC-113, "Removal and Installation"
NO
>> GO TO 8.
8.
CHECK NATS ANTENNA AMP. OUTPUT SIGNAL CIRCUIT 2
1. Disconnect BCM connector.
2. Check continuity between NATS antenna amp. harness connector and BCM connector.
3. Check continuity between NATS antenna amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace harness.
9.
REPLACE BCM
1. Replace BCM. Refer to
BCS-72, "Removal and Installation"
.
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT. Refer to the CON-
SULT Immobilizer mode and follow the on screen instructions.
>> Inspection End.
(+)
(–)
Condition
Voltage (V)
(Approx.)
NATS antenna amp.
Connector
Terminal
M49
3
Ground
Intelligent Key: Intelligent
Key battery is removed
Brake pedal: Depressed
NOTE:
Waveform varies each time
when brake pedal is depressed
Brake pedal: Released
Battery voltage
JMKIA6233JP
NATS antenna amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M49
3
M24
25
Yes
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M49
3
No
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