Nissan Maxima. Manual — part 1053
B2190 NATS ANTENNA AMP.
SEC-37
< DTC/CIRCUIT DIAGNOSIS >
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B2190 NATS ANTENNA AMP.
Description
INFOID:0000000010051933
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed.
Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
DTC Logic
INFOID:0000000010051934
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert Intelligent Key into the key slot.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> GO TO 2
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Press the push-button ignition switch.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051935
Regarding Wiring Diagram information, refer to
1.
INSPECTION START
Check the case in which DTC is detected.
• Case1: It is detected when Intelligent Key is inserted into key slot.
• Case2: It is detected after Intelligent Key is inserted into key slot and push-button ignition switch is pressed.
In which case is DTC detected?
Case1. >> GO TO 2
Case2. >> GO TO 4
2.
CHECK KEY SLOT INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect key slot harness connector.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2190
NATS ANTENNA
AMP
Inactive communication between key slot and
BCM.
• Harness or connectors
(The key slot circuit is open or
shorted)
• Key slot
• BCM
SEC-38
< DTC/CIRCUIT DIAGNOSIS >
B2190 NATS ANTENNA AMP.
3. Check voltage between key slot harness connector M40 termi-
nal 2 and ground.
Is the inspection result normal?
YES
>> Replace key slot. Refer to
NO
>> GO TO 3
3.
CHECK KEY SLOT CIRCUIT
1. Disconnect BCM harness connector.
2. Check continuity between key slot harness connector M40 (A)
terminal 2 and BCM harness connector M19 (B) terminal 68.
3. Check continuity between key slot harness connector M40 (A)
terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 8
NO
>> Repair harness or connector.
4.
CHECK PUSH-IGNITION SWITCH OPERATION
Press push-button ignition switch and check if it turns ON.
Does ignition switch turn to ON?
YES
>> GO TO 5
NO
>> GO TO 7
5.
CHECK KEY SLOT COMMUNICATION SIGNAL
1. Turn ignition switch OFF.
2. Disconnect key slot harness connector.
3. Check voltage between key slot harness connector M40 termi-
nal 3 and ground.
Is the inspection result normal?
YES
>> Replace key slot. Refer to
NO
>> GO TO 6
6.
CHECK KEY SLOT COMMUNICATION SIGNAL CIRCUIT
1. Disconnect BCM harness connector.
Key slot
Ground
Voltage [V]
(approx.)
Connector
Terminal
M40
2
Ground
Battery voltage
ALKIA0428ZZ
Key slot
BCM
Continuity
Connector
Terminal
Connector
Terminal
A: M40
2
B: M19
68
Yes
Key slot
Ground
Continuity
Connector
Terminal
A: M40
2
Ground
No
ALKIA0429ZZ
Key slot
Ground
Voltage [V]
(approx.)
Connector
Terminal
M40
3
Ground
Battery voltage
ALKIA0430ZZ
B2190 NATS ANTENNA AMP.
SEC-39
< DTC/CIRCUIT DIAGNOSIS >
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2. Check continuity between key slot harness connector M40 (A)
terminal 3 and BCM harness connector M19 (B) terminal 69.
3. Check continuity between key slot harness connector M40 (A)
terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 8
NO
>> Repair harness or connector.
7.
CHECK KEY SLOT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key slot harness connector.
3. Check continuity between key slot harness connector M40 ter-
minal 7 and ground.
Is the inspection result normal?
YES
>> GO TO 8
NO
>> Repair harness or connector.
8.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
>> Inspection End.
Key slot
BCM
Continuity
Connector
Terminal
Connector
Terminal
A: M40
3
B: M19
69
Yes
Key slot
Ground
Continuity
Connector
Terminal
A: M40
3
Ground
No
ALKIA0431ZZ
Key slot
Ground
Continuity
Connector
Terminal
M40
7
Ground
Yes
ALKIA0344ZZ
SEC-40
< DTC/CIRCUIT DIAGNOSIS >
B2191 DIFFERENCE OF KEY
B2191 DIFFERENCE OF KEY
Description
INFOID:0000000010051936
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed.
Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
DTC Logic
INFOID:0000000010051937
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert the Intelligent Key in the key slot. Press the push-button ignition switch.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051938
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all Intelligent Keys.
For initialization and registration of Intelligent 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 Intelligent Key?
YES
>> Intelligent Key was unregistered.
NO
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-79, "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 Intel-
ligent Key are NG. The registration is necessary.
• Intelligent Key
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