Nissan Sentra. Manual — part 788
SEC-180
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
B2190, P1614 NATS ANTENNA AMP.
YES
>> GO TO 4
NO
>> Repair or replace fuse or harness.
4.
CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect NATS antenna amp. connector.
3. Check continuity between NATS antenna amp. connector M42 terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> • Repair or replace harness.
NOTE:
If harness is OK, replace BCM
BCS-126, "Removal and Installation"
. Perform initialization with
CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-screen
instructions.
5.
CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
1. Connect NATS antenna amp. connector.
2. Turn ignition switch ON.
3. Check voltage between NATS antenna amp. connector M42 terminal 2 and ground with analog tester.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> • Repair or replace harness.
NOTE:
If harness is OK, replace BCM
BCS-126, "Removal and Installation"
. Perform initialization with
CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-screen
instructions.
6.
CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M42 terminal 4 and ground with analog tester.
Is the inspection result normal?
YES
>> NATS antenna amp. is malfunctioning. Replace NATS antenna amp. Refer to
.
NO
>> • Repair or replace harness.
NOTE:
3 - Ground
: Continuity should exist.
Terminals
Position of ignition key cylinder
Voltage (V)
(Approx.)
( + )
( - )
2
Ground
Before inserting ignition key
Battery voltage
After inserting ignition key
Pointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch
ON
Pointer of tester should move for approx. 1 second, then
return to battery voltage
Terminals
Position of ignition key cylinder
Voltage (V)
(Approx.)
( + )
( - )
4
Ground
Before inserting ignition key
Battery voltage
After inserting ignition key
Pointer of tester should move for approx. 30 seconds,
then return to battery voltage
Just after turning ignition switch
ON
Pointer of tester should move for approx. 1 second, then
return to battery voltage
B2190, P1614 NATS ANTENNA AMP.
SEC-181
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
C
D
E
F
G
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A
B
SEC
N
O
P
If harness is OK, replace BCM, refer to
BCS-126, "Removal and Installation"
. Perform initializa-
tion with CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-
screen instructions.
SEC-182
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
B2191, P1615 DIFFERENCE OF KEY
B2191, P1615 DIFFERENCE OF KEY
Description
INFOID:0000000009756824
Performs ID verification through BCM when mechanical key is inserted in the ignition key cylinder.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC Logic
INFOID:0000000009756825
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert mechanical key into the key cylinder.
2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
SEC-182, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009756826
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the on-
screen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> Mechanical key was unregistered.
NO
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-126, "Removal and Installation"
.
• Perform initialization again.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2191
DIFFERENCE OF
KEY
The ID verification results between BCM and me-
chanical key are NG. The registration is necessary.
Mechanical key
P1615
B2192, P1611 ID DISCORD, IMMU-ECM
SEC-183
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
C
D
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F
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B
SEC
N
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B2192, P1611 ID DISCORD, IMMU-ECM
Description
INFOID:0000000009756827
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC Logic
INFOID:0000000009756828
DTC DETECTION LOGIC
NOTE:
• If DTC B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2192 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
SEC-183, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009756829
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key, refer to CONSULT Immobilizer mode and follow the on-
screen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> ID was unregistered.
NO
>> GO TO 2
2.
REPLACE BCM
1. Replace BCM. Refer to
BCS-126, "Removal and Installation"
.
2. Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key, refer to CONSULT Immobilizer mode and follow the
on-screen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> BCM is malfunctioning.
NO
>> GO TO 3
3.
REPLACE ECM
1. Replace ECM. Refer to
EC-485, "Removal and Installation"
2. Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key, refer to CONSULT Immobilizer mode and follow the
on-screen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> ECM is malfunctioning.
NO
>> GO TO 4
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2192
ID DISCORD BCM-
ECM
The ID verification results between BCM and ECM
are NG. The registration is necessary.
• BCM
• ECM
P1611
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