Check engine NISSAN TIIDA 2007 Service Repair Manual

B2194 ID DISCORD IMMU-I-KEY
SEC-33
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B2194 ID DISCORD IMMU-I-KEY
DescriptionINFOID:0000000001404072
BCM performs the ID verification with Intelligent Key unit that allows the engine to start. BCM starts the com-
munication with Intelligent Key unit if ignition switch is turned ON and starts the engine if the ID is OK. BCM
prevents the engine from starting if the ID is not registered.
DTC LogicINFOID:0000000001404073
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-33, "Diagnosis Procedure".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000001404074
1.PERFORM INITIALIZATION
1. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT-III Operation Manual.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> GO TO 2.
NO >> ID was unregistered.
2.REPLACE BCM
1. Turn ignition switch OFF.
2. Replace BCM. Refer to XX-XX, "*****"
.
3. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT-III Operation Manual.
Can the system be initialized and can the engine be started?
YES >> BCM is malfunctioning.
NO >> GO TO 3.
3.CHECK INTERMITTENT INCIDENT
Refer to @@@.
>> INSPECTION END
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2194DISCORD BCM-I-
KEYThe ID verification results between BCM and Intel-
ligent Key unit are NG. The registration is neces-
sary.BCM
 Intelligent Key unit

SEC-34
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2552 INTELLIGENT KEY
B2552 INTELLIGENT KEY
DescriptionINFOID:0000000001404081
Intelligent key unit performs engine start operation and steering lock control by crosschecking ID with the Intel-
ligent key.
DTC LogicINFOID:0000000001404082
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-34, "Diagnosis Procedure".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000001404083
1.REPLACE INTELLIGENT KEY UNIT
1. Replace Intelligent Key unit.
2. Perform initialization with CONSULT-III. Re-register all mechanical keys. Refer to CONSULT-III Operation
Manual.
3. Start the engine.
Does the engine start?
YES >> INSPECTION END
NO >> Perform “DTC confirmation procedure”. Refer to SEC-34, "
DTC Logic".
Special Repair RequirementINFOID:0000000001404084
1.REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT
Initialize control unit. Refer to CONSULT-III operation manual.
>> Work end.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2552INTELLIGENT KEY
UNITMalfunction is detected inside Intelligent
key unit.Intelligent Key unit

B2590 ID DISCORD BCM-I-KEY
SEC-35
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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B2590 ID DISCORD BCM-I-KEY
DescriptionINFOID:0000000001404085
Intelligent Key unit performs the ID verification with BCM that allows the engine to start. BCM starts the engine
if the ID is OK and prevents the engine from starting if the ID is not registered.
DTC LogicINFOID:0000000001404086
DTC DETECTION LOGIC
NOTE:
 If DTC B2590 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
SEC-21, "
DTC Logic".
 If DTC B2590 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
SEC-22, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-35, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001404087
1.PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT-III Operation Manual.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES >> ID was unregistered.
NO >> BCM is malfunctioning.
 Replace BCM. Refer to BCS-57, "
Removal and Installation of BCM".
 Perform initialization again
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2590ID DISCORD BCM-I-
KEYThe ID verification results between BCM and Intel-
ligent Key unit are NG. The registration is neces-
sary.BCM
 Intelligent Key unit

SEC-36
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
P1610 LOCK MODE
P1610 LOCK MODE
DescriptionINFOID:0000000001404088
When the starting operation is carried more than five times consecutively under the following conditions, NATS
will shift to the mode which prevents the engine from being started.
 Unregistered mechanical key is used.
 BCM or ECM's malfunctioning.
DTC LogicINFOID:0000000001404089
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-36, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001404090
1.CHECK ENGINE START FUNCTION
1. Perform the check for DTC except DTC P1610.
2. Use CONSULT-III to erase DTC after fixing.
3. Check that engine can start with registered mechanical key.
Does the engine start?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK INTERMITTENT INCIDENT
Refer to @@@.
>> INSPECTION END
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1610 LOCK MODEWhen the starting operation is carried out
five or more times consecutively under the
following conditions.
 Unregistered mechanical key
 BCM or ECM's malfunctioning.—

INTELLIGENT KEY UNIT
SEC-71
< ECU DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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INTELLIGENT KEY UNIT
Reference ValueINFOID:0000000001404128
For LHD vehicles, refer to DLK-381, "Reference Value".
For RHD vehicles, refer to DLK-151, "
Reference Value".
Fail SafeINFOID:0000000001404132
DTC Inspection Priority ChartINFOID:0000000001404133
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC IndexINFOID:0000000001404134
NOTE:
Details of time display
 CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning igni-
tion switch OFF → ON again.
 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1
→ 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter
remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch
OFF → ON after returning to the normal condition if the malfunction is detected again.
Display contents of CONSULT-III Fail-safe Cancellation
B2013: STRG COMM 1  Inhibits steering look unlocking Erase DTC
B2552: INTELLIGENT KEY Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
B2590: NATS MALFUNCTION Inhibits steering look unlocking
 Inhibits engine cranking
(BCM)
Fuel cut
(ECM)Erase DTC
Priority DTC
1 U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
 B2552: INTELIGENT KEY
2 B2013: STRG COMM 1
 B2590: NATS MALFUNCTION
CONSULT display Detection condition Fail-safe Diagnosis
No DTC is detected.
further testing
may be required.———
U1000: CAN COMM CIRCUITIntelligent Key unit cannot receive CAN communi-
cation signal continuously for 2 seconds or more.—Check CAN communi-
cation system.
Refer to SEC-21
U1010: CONTROL UNIT (CAN)Intelligent Key unit detects internal CAN communi-
cation circuit malfunction.—Replace Intelligent Key
unit.
B2013: STRG COMM 1The ID verification result between Intelligent key
unit and steering lock unit are NG. Or Intelligent Key
unit cannot communicate with steering lock unit.×Perform steering lock
unit ID registration with
CONSULT-III

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION SYMPTOMS
SEC-75
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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SYMPTOM DIAGNOSIS
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION SYMPTOMS
Symptom TableINFOID:0000000001404141
NOTE:
 Before performing the diagnosis in the following table, check “XX-XX, "*****"
”.
 Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
 If the following symptoms are detected, check systems shown in the “Diagnosis/service procedure” column
in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
 Engine start function is ON when setting on CONSULT-III.
 Mechanical key is not inserted in key cylinder.
 One or more of Intelligent Keys with registered Intelligent Key ID is in the vehicle.
Symptom Diagnosis/service procedureReference
page
Ignition switch does not turn on with Intelligent Key.
[KEY warning lamp (green) illuminates.]1. Check steering lock unit.SEC-23
2. Replace Intelligent Key unit.XX-XX, "*****"
Ignition switch does not turn on with Intelligent Key.
[KEY warning lamp does not illuminate.]1.Check Intelligent Key unit power supply and ground cir-
cuit.XX-XX,
"*****"
2. Check ignition knob switch.XX-XX, "*****"
3. Check key switch.XX-XX, "*****"
4. Replace Intelligent Key unit.XX-XX, "*****"
Ignition switch does not turn on with Intelligent Key.
[KEY warning lamp (red) illuminates.]1. Check inside key antenna.XX-XX, "*****"
2. Replace Intelligent Key unit.XX-XX, "*****"
Ignition switch does not turn on with mechanical key Check key switch.XX-XX, "*****"
Engine cannot start1. Check key switch.XX-XX,
"*****"
2. Check stop lamp switch (A/T).XX-XX, "*****"
3. Check stop lamp switch (M/T).XX-XX, "*****"

SEC-76
< SYMPTOM DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
NATS (NISSAN ANTI-THEFT SYSTEM) SYMPTOMS
NATS (NISSAN ANTI-THEFT SYSTEM) SYMPTOMS
Symptom TableINFOID:0000000001404143
NOTE:
 Before performing the diagnosis in the following table, check “SEC-4, "
Work Flow"”.
 Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and
check each symptom.
 If the following symptoms are detected, check systems shown in the “Diagnosis/service procedure” column
in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
 Mechanical key is not inserted into key cylinder.
 Ignition knob switch is not depressed.
Symptom Diagnosis/service procedure Reference page
Engine cannot start.1. Check stop lamp switchXX-XX, "*****"
2. Check Intermittent IncidentXX-XX, "*****"
Security indicator does not turn ON or flash.1. Check vehicle security indicatorSEC-492. Check Intermittent IncidentXX-XX, "*****"

PRE-INSPECTION FOR DIAGNOSTIC
SEC-77
< ON-VEHICLE MAINTENANCE >[WITH INTELLIGENT KEY SYSTEM]
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ON-VEHICLE MAINTENANCE
PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINFOID:0000000001404144
The engine start function, door lock function, and NATS in the Intelligent Key system are closely related to
each other regarding control. Narrow down the functional area in question by performing basic inspection to
identify which function is malfunctioning. The vehicle security function can operate only when the door lock is
operating normally. Therefore, it is easy to identify any factor unique to the vehicle security system by perform-
ing the vehicle security operation check after basic inspection.
1.CHECK DOOR LOCK OPERATION
Check the door lock for normal operation with the Intelligent Key and door request switch.
Successful door lock operation with the Intelligent Key and request switch indicates that the remote keyless
entry receiver and inside key antenna required for engine start are functioning normally.
Identify the malfunctioning point by referring to the DLK section if the door cannot be unlocked.
Can the door be locked with the Intelligent Key and door request switch?
YES >> GO TO 2.
NO >> Refer to XX-XX, "*****"
.
2.CHECK IGNITION KNOB SWITCH OPERATION-1
With all registered Intelligent Keys, check if ignition knob can rotate when carrying Intelligent Key inside the
vehicle.
Does ignition knob rotate?
YES >> GO TO 3.
NO >> Refer to SEC-76, "
Symptom Table".
3.CHECK IGNITION KNOB SWITCH OPERATION-2
Insert registered mechanical key into key cylinder, and check if ignition knob can rotate. Check for all regis-
tered mechanical keys.
Does ignition knob rotate?
YES >> GO TO 4.
NO (Does not rotate with some of mechanical keys)>>Perform mechanical key registration.
NO (Does not rotate with all mechanical keys)>>Refer to SEC-76, "
Symptom Table".
4.CHECK VEHICLE SECURITY SYSTEM
Check the vehicle security system for normal operation.
The vehicle security function can operate only when the door lock function is operating normally.
Therefore, it is easy to identify any factor unique to the vehicle security by performing the vehicle security
operation check after this basic inspection.
>> Go to SEC-77, "
Vehicle Security Operation Check".
Vehicle Security Operation CheckINFOID:0000000001404145
1.INSPECTION START
Turn ignition switch “OFF” and pull out mechanical key from key cylinder.
NOTE:
Before starting operation check, open front windows.
>> GO TO 2.
2.CHECK SECURITY INDICATOR LAMP
1. Lock doors using Intelligent Key.
2. Check that security indicator lamp illuminates for 30 seconds.
Security indicator lamp should illuminate.
OK >> GO TO 3.

SEC-92
< COMPONENT DIAGNOSIS >[WITHOUT INTELLIGENT KEY SYSTEM]
B2190, P1614 NATS ANTENNA AMP.
B2190, P1614 NATS ANTENNA AMP.
DescriptionINFOID:0000000001532070
Performs ID verification through BCM and NATS antenna amplifier when ignition knob switch is pressed.
Prohibits the start of engine when an unregistered ID of mechanical key is used.
DTC LogicINFOID:0000000001532071
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Insert ignition key into the key cylinder.
2. Turn ignition switch ON.
3. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to XX-XX, "*****".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000001532072
1.CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to XX-XX, "*****"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Reinstall NATS antenna amp. correctly.
2.CHECK NATS IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.
Does the engine start?
YES >>  Ignition key ID chip is malfunctioning.
 Replace the ignition key.
 Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual”.
NO >> GO TO 3.
3.CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch ON.
2. Check voltage between NATS antenna amp. connector M21 terminal 3 and ground.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2190
NATS ANTENNA
AMP Inactive communication between NATS antenna
amp. and BCM.
 Mechanical key is malfunctioning. Harness or connectors
(The NATS antenna amp. circuit is
open or shorted)
 Mechanical key
 NATS antenna amp.
BCM P1614

SEC-94
< COMPONENT DIAGNOSIS >[WITHOUT INTELLIGENT KEY SYSTEM]
B2191, P1615 DIFFERENCE OF KEY
B2191, P1615 DIFFERENCE OF KEY
DescriptionINFOID:0000000001404177
Performs ID verification through BCM when ignition switch is ON position.
Prohibits the release of steering lock or start of engine when an unregistered key is used.
DTC LogicINFOID:0000000001404178
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Insert ignition key into the key cylinder.
2. Press the ignition knob switch.
3. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-94, "Diagnosis Procedure".
NO >> INSPECTION END.
Diagnosis ProcedureINFOID:0000000001404179
1.PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all ignition keys.
For initialization and registration of ignition key. Refer to CONSULT-III Operation Manual.
Can the system be initialized and can the engine be started with re-registered ignition key?
YES >> Ignition key was unregistered.
NO >> BCM is malfunctioning.
 Replace BCM. Refer to XX-XX, "*****"
.
 Perform initialization again
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2191
DIFFERENCE OF
KEYThe ID verification results between BCM and igni-
tion key are NG. The registration is necessary. Ignition key
P1615