Nissan Frontier. Instruction — part 1131
B2191, P1615 DIFFERENCE OF KEY
SEC-21
< DTC/CIRCUIT DIAGNOSIS >
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B2191, P1615 DIFFERENCE OF KEY
Description
INFOID:0000000009479041
Performs ID verification through BCM when key is inserted in key cylinder.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC Logic
INFOID:0000000009479042
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
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479043
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-49, "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
SEC-22
< DTC/CIRCUIT DIAGNOSIS >
B2192, P1611 ID DISCORD, IMMU-ECM
B2192, P1611 ID DISCORD, IMMU-ECM
Description
INFOID:0000000009479044
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:0000000009479045
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
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479046
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-49, "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 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
B2192, P1611 ID DISCORD, IMMU-ECM
SEC-23
< DTC/CIRCUIT DIAGNOSIS >
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4.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
.
>> Inspection End.
SEC-24
< DTC/CIRCUIT DIAGNOSIS >
B2193, P1612 CHAIN OF ECM-IMMU
B2193, P1612 CHAIN OF ECM-IMMU
Description
INFOID:0000000009479047
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:0000000009479048
DTC DETECTION LOGIC
NOTE:
• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2193 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
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009479049
1.
REPLACE BCM
1. Replace BCM. Refer to
BCS-49, "Removal and Installation"
.
2. Perform initialization with CONSULT.
For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.
Does the engine start?
YES
>> BCM was malfunctioning.
NO
>> ECM is malfunctioning.
• Replace ECM.
• Perform ECM re-communicating function.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2193
CHAIN OF BCM-
ECM
Inactive communication between ECM and BCM
• Harness or connectors
(The CAN communication line is
open or short)
• BCM
• ECM
P1612
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