Nissan Sentra. Manual — part 761
SEC-72
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2198 NATS ANTENNA AMP.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-30, "Removal and Installation"
NO
>> Repair or replace harness.
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
IPDM E/R
NATS antenna amp.
Continuity
Connector
Terminal
Connector
Terminal
E45
32
M42
1
Yes
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M42
4
Yes
(+)
(–)
Condition
Voltage (V)
(Approx.)
NATS antenna amp.
Connector
Terminal
M42
2
Ground
Intelligent Key: Intelligent
Key battery is removed
Brake pedal: Depressed
NOTE:
Waveform varies each time
when brake pedal is depressed
Brake pedal: Not depressed
12
JMKIA6232JP
NATS antenna amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M42
2
M84
21
Yes
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M42
2
No
B2198 NATS ANTENNA AMP.
SEC-73
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Check voltage signal between NATS antenna amp. harness connector and ground using an oscilloscope.
Is the inspection result normal?
YES
>> Replace NATS antenna amp. Refer to
SEC-135, "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-73, "Removal and Installation"
.
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
>> Inspection End
(+)
(–)
Condition
Voltage (V)
(Approx.)
NATS antenna amp.
Connector
Terminal
M42
3
Ground
During waiting
Brake pedal: Depressed
NOTE:
Waveform varies each time
when brake pedal is depressed
Brake pedal: Not depressed
12
JMKIA6233JP
NATS antenna amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M42
3
M84
25
Yes
NATS antenna amp.
Ground
Continuity
Connector
Terminal
M42
3
No
SEC-74
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2555 STOP LAMP
B2555 STOP LAMP
DTC Logic
INFOID:0000000009756717
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Depress brake pedal and wait 1 second or more.
2. Check DTC in Self Diagnostic Result mode of BCM using CONSULT.
Is DTC detected?
YES
>> Go to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009756718
Regarding Wiring Diagram information, refer to
.
1.
CHECK STOP LAMP SWITCH INPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
Is the inspection normal?
YES
>> GO TO 2.
NO-1 >> Check 10 A fuse [No. 30, located in the fuse block (J/B)].
NO-2 >> Check harness for open or short between BCM and fuse.
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness for open or short between stop lamp switch and fuse.
3.
CHECK STOP LAMP SWITCH INPUT SIGNAL 2
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B2555
STOP LAMP CIRCUIT
BCM makes a comparison between the
upper voltage and lower voltage of stop
lamp switch. It judges from their values to
detect the malfunctioning circuit.
• Harness or connectors
(Stop lamp switch circuit is open or
shorted.)
• Stop lamp switch
• Fuse
• BCM
(+)
(–)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M83
66
Ground
Battery voltage
(+)
(–)
Voltage (V)
(Approx.)
Stop lamp switch
Connector
Terminal
E60
1
Ground
Battery voltage
B2555 STOP LAMP
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
1. Connect stop lamp switch connector.
2. Check voltage between BCM harness connector and ground.
Is the inspecting result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
REPLACE BCM
1. Replace BCM. Refer to
BCS-73, "Removal and Installation"
.
2. Perform initialization of BCM and registration of all Intelligent Keys using CONSULT.
>> Inspection End.
5.
CHECK STOP LAMP SWITCH CIRCUIT
1. Disconnect stop lamp switch connector.
2. Check continuity between stop lamp switch harness connector and BCM harness connector.
3. Check continuity between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK STOP LAMP SWITCH
SEC-75, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace stop lamp switch. Refer to
.
7.
CHECK INTERMITTENT INCIDENT
GI-39, "Intermittent Incident"
.
>> Inspection End.
Component Inspection
INFOID:0000000009756719
1.
CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Check continuity between stop lamp switch terminals.
(+)
(–)
Condition
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M84
9
Ground
Brake pedal
Depressed
Battery voltage
Not depressed
0
Stop lamp switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
E60
2
M84
9
Yes
Stop lamp switch
Ground
Continuity
Connector
Terminal
E60
2
No
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