check engine INFINITI M35 2006 Factory Service Manual

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
2. CHECK POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect key slot connector.
3. Check voltage between key slot connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check key slot power supply circuit for open or short.
3. CHECK HARNESS CONTINUITY 1
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit connector and key slot connector.
3. Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK KEY SLOT
Check key slot.
OK or NG
OK >> Check the condition of harness and connector.
NG >> Replace key slot.
Terminals
Voltage (V)
(Approx.) (+)
(–)
Key slot connector Terminal
M14 1 Ground Battery voltage
PIIB6258E
AB
Continuity
Intelligent Key
unit connectorTerminal Key slot connector Terminal
M32 19 M14 2 Yes
A
GroundContinuity
Intelligent Key unit connector Terminal
M32 19 No
PIIB6259E
Terminal
Condition Continuity
Key slot
12Keyslot inserted Yes
Keyslot removed No
PIIB6260E

BL-188
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Revision: 2006 January2006 M35/M45
5. CHECK HARNESS CONTINUITY 2
1. Disconnect BCM connector.
2. Check continuity between BCM connector and key slot connector.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> Replace BCM. Refer to "C/U INITIALIZATION", and then perform the registration again after
replacing BCM.
NG >> Repair or replace harness.
Check NATS Antenna Amp. Built In Key SlotNIS001Z8
For the circuit information of this diagnosis, refer to Engine Immobilizer System Circuit Diagram.
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect key slot connector.
3. Check voltage between key slot connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Check key slot power supply circuit for open or short.
2. CHECK GROUND CIRCUIT
Check continuity between key slot connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
AB
Continuity
BCM connector Terminal Key slot connector Terminal
M1 37 M14 2 Yes
A
GroundContinuity
BCM connector Terminal
M1 37 No
PIIB6261E
Terminals
Voltage (V)
(Approx.) (+)
(–)
Key slot connector Terminal
M14 1 Ground Battery voltage
PIIB6258E
Key slot connector Terminal
GroundContinuity
M14 8 Yes
PIIB6262E

INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Revision: 2006 January2006 M35/M45
3. CHECK KEY SLOT SIGNAL
1. Connect key slot connector.
2. Check voltage between key slot connector and ground.
OK or NG
OK >> Check the condition of harness and connector.
NG >> Repair or replace harness between BCM and key slot.
Terminals
ConditionVoltage (V)
(Approx.) (+)
(–)
Key slot
connectorTerminal
M146
GroundCheck the voltage just
after the Intelligent Key
is inserted into the key
slot and the ignition
switch is turned to
START.The pointer of
the analog
tester fluctu-
ates. 7
PIIB6263E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-271
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Revision: 2006 January2006 M35/M45
“NATS V5.0” SELF-DIAGNOSTIC RESULTS ITEM CHART
“NATS BCM OR S/ENT” SELF-DIAGNOSTIC RESULTS ITEM CHART
Suspect Systems Description Possible malfunction Action to take/Reference page
NO DTC NO DTC — —
DON'T ERASE BEFORE
CHECKING ENG DIAGThere is the engine trouble
diagnosis information in ECM
(ECM trouble diagnosis is nec-
essary separately)Engine control system malfunc-
tionThere is the engine trouble
diagnosis information in ECM.
Check the trouble diagnostic
results of “ENGINE” before
that.
LOCK MODE
[P1610]The immobilizer switches to the
mode that prevents the engine
from being started. If the ID ver-
ification between BCM and
ECM is NG, the ID verification
malfunction between remote
control starter and BCM may be
detected 5 times or more.—When “LOCK MODE” is dis-
played, check for any other dis-
played malfunction, and then
erase the self-diagnostic results
after replacement.
ID DISCORD, IMM-ECM
[P1611]The ID verification results
between BCM and ECM are
NG. The registration is neces-
sary.Registration of ECM is not com-
pletedBL-280
ECM malfunction Replace ECM.
CHAIN OF ECM-IMMU
[P1612]Inactive communication
between ECM and BCMOpen circuit in battery power
supply line of BCM
BL-278
Open circuit in ignition power
supply line of BCM
Open circuit in ground of BCM
Short circuit in communication
line between BCM and ECM to
power supply line
Open circuit in communication
line between BCM and ECM
Short circuit in communication
line between BCM and ECM to
ground
ECM malfunction
BCM malfunction
CHAIN OF IMMU-KEY
[P1614]BCM malfunction BCM malfunctionBCS-17
Suspect Systems Description Possible malfunction Action to take/Reference page
NO DTC NO DTC — —
ID DISCORD BCM-ECM
[B2192]The ID verification results
between BCM and ECM are
NG. The registration is neces-
sary.Registration of ECM is not com-
pletedPerform “Control Unit Initializa-
tion”, and then perform the ID
registration. Refer to the Tech-
nical Bulletin.
ECM malfunction Replace ECM.
CHAIN OF BCM-ECM
[B2193]Inactive communication
between ECM and BCMShort circuit in communication
line between BCM and ECM to
power supply lineMalfunction have occurred in
CAN communication
Check “Self-diagnostic Results”
of “Intelligent Key” using CON-
SULT-II. Refer to BL-152,
"SELF-DIAGNOSTIC
RESULTS" . Open circuit in communication
line between BCM and ECM
Short circuit in communication
line between BCM and ECM to
ground
ECM malfunction Replace ECM.

BL-272
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2006 January2006 M35/M45
“NATS I-KEY” SELF-DIAGNOSTIC RESULTS ITEM CHART
Work FlowNIS0020O
1. LISTEN TO CUSTOMER COMPLAINT OR REQUEST
Get symptoms or listen to customer complaints or request.
NOTE:
In case of request for Intelligent Key or IVIS (NATS) system repair, the key ID re-registration might be neces-
sary. Keep all the Intelligent Keys before work for the re-registration.
Key ID registration request>>Register Intelligent Key by referring to CONSULT-II operation manual IVIS/
NVIS NATS.
Request for malfunction repair.>>GO TO 2.
2. CHECK DOOR LOCK AND REMOTE CONTROL FUNCTION
Check that Door Lock and remote control function of Intelligent Key operate normally.
Door Lock or remote control function is malfunctioning.>>Malfunction of Door Lock and remote control func-
tion, Refer to
Door Lock and remote control function are normal.>>GO TO 3.
DISCORD BCM-I-KEY
[B2194]The ID verification results
between BCM and Intelligent
Key unit are NG.Short circuit in communication
line between BCM and Intelli-
gent Key unit to power supply
lineMalfunction have occurred in
CAN communication
Check “Self-diagnostic Results”
of “Intelligent Key” using CON-
SULT-II. Refer to BL-152,
"SELF-DIAGNOSTIC
RESULTS" . Short circuit in communication
line between BCM and ECM to
ground
Intelligent Key unit malfunctionBL-125
ANTI-SCANNING
[B2195]A remote control starter that is
not Genuine NISSAN is
installedIf a remote control starter that is
not Genuine NISSAN is
installed, the anti-theft system
is activated and the engine may
not be started. In this case,
remove the parts after the cus-
tomer understands the situa-
tion.— Suspect Systems Description Possible malfunction Action to take/Reference page
Suspect Systems Description Possible malfunction Action to take/Reference page
NO DTC NO DTC — —
DISCORD BCM-I-KEY
[B2590]The ID verification results
between Intelligent Key unit
and BCM are NG.Short circuit in communication
line between BCM and Intelli-
gent Key unit to power supply
lineMalfunction have occurred in
CAN communication
Check “Self-diagnostic Results”
of “Intelligent Key” using CON-
SULT-II. Refer to BL-152,
"SELF-DIAGNOSTIC
RESULTS" . Short circuit in communication
line between BCM and ECM to
ground
BCM malfunctionBCS-17

BL-274
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2006 January2006 M35/M45
8. CHECK TURNING TIMING OF POWER SOURCE POSITION 2
Check all the Intelligent Keys for power source turning delay time after Push-button ignition switch is pushed
with Intelligent Key inserted into key slot. (Approx. 3 sec)
CAUTION:
Operate Push-button ignition switch without depressing the brake pedal.
No delay time exists>>GO TO 9.
Delay time exists when operated with particular Intelligent Key.>>Perform “C/U INITIALIZATION” referring to
CONSULT-II operation manual IVIS/NVIS NATS. In case that delay time still exists after the initial-
ization, replace the Intelligent Key.
Delay time exists when operated with any of the Intelligent Keys.>>Perform Trouble diagnosis symptom
chart 3. Refer to BL-180, "
Trouble Diagnosis Symptom Chart 3" .
9. CHECK ENGINE START FUNCTION
Check that engine can be started with Intelligent Key carried and inserted into the key slot respectively.
Engine can be started.>>GO TO 10.
Engine cannot be started.>>Inspect Trouble Diagnosis Flow Chart for IVIS (NATS). Refer to BL-275, "
Trou-
ble Diagnoses Flow Chart for IVIS (NATS)" .
10. CHECK SECURITY INDICATOR FUNCTION
Check Security Indicator for lighting up under the two conditions below.
Security Indicator lights off when Push-button ignition switch is pushed with Intelligent Key inserted into or
pulled out of the key slot.
Security Indicator blinks when Intelligent Key is pulled out and Push-button ignition switch is in lock posi-
tion.
Lighting up condition is normal.>>Inspection END.
Lighting up condition is malfunctioning.>>Perform Security Indicator Inspection. Refer to BL-277, "
Symptom
Chart for Security Indicator" .

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-275
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Revision: 2006 January2006 M35/M45
Trouble Diagnoses Flow Chart for IVIS (NATS)NIS0020P
NOTE:
This procedure is used to resolve the engine start malfunction when the Intelligent Key inserted into the key
slot is used.
1. CHECK ENGINE FOR START
Check that the engine can be started when Push-button ignition switch is operated with Intelligent Key
inserted into the key slot.
NG >> GO TO 2.
OK >> System is normal.
2. CONFIRM SELF DIAGNOSIS
Confirm SELF DIAGNOSIS “NATS V5.0” using CONSULT-II.
NOTE:
NATS program card is necessary to display the “SELF DIAGNOSIS”.
No malfunction>>Re-check the engine for start according to “Work Flow”. Refer to BL-272, "
Work Flow" .
Malfunction related to IVIS (NATS) is displayed.>>GO TO 3.
Malfunctions related to “DON'T ERASE BEFORE CHECKING ENG DIAG” and IVIS (NATS) are displayed>>
GO TO 6.
3. TROUBLE DIAGNOSIS
Repair IVIS (NATS) according to “SELF DIAGNOSIS”.
>> GO TO 4.
4. ERASE SELF DIAGNOSIS
Erase the record of “SELF DIAGNOSIS” using CONSULT-II.
>> GO TO 5.
5. CHECK ENGINE FOR START
Check that the engine can be started when Push-button ignition switch is operated with Intelligent Key
inserted into the key slot.
NG >> GO TO 2.
OK >> Inspection END.
6. CONFIRM SELF DIAGNOSIS DISPLAY
IVIS (NATS) malfunction information and “DON'T ERASE BEFORE CHECKING ENG DIAG” are displayed on
the CONSULT-II screen.
NOTE:
This indication means that malfunctions have been detected in IVIS (NATS) and engine control system.
>> GO TO 7.

BL-276
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2006 January2006 M35/M45
7. TROUBLE DIAGNOSIS
Repair IVIS (NATS) according to “SELF DIAGNOSIS”.
NOTE:
Do not erase “SELF DIAGNOSIS” using CONSULT-II.
>> GO TO 8.
8. CONFIRM SELF DIAGNOSIS
Confirm SELF DIAGNOSIS “ECM” using CONSULT-II.
>> GO TO 9.
9. CONFIRM SELF DIAGNOSIS DISPLAY
In case that malfunction of engine control system is displayed other than “NATS MALFUNCTION” in “SELF
DIAGNOSIS”, repair engine control system.
NOTE:
In case that only “NATS MALFUNCTION” is displayed, erase record of “SELF DIAGNOSIS”.
>> GO TO 10.
10. CHECK ENGINE FOR START
Check that the engine can be started when Push-button ignition switch is operated with Intelligent Key
inserted into the key slot.
NG >> GO TO 2.
OK >> GO TO 11.
11 . CONFIRM SELF DIAGNOSIS
Confirm SELF DIAGNOSIS “ECM” using CONSULT-II.
“NO DTC” is displayed.>>Inspection END.
Malfunction information is displayed.>>GO TO 2.

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-277
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Revision: 2006 January2006 M35/M45
Symptom Chart for Security IndicatorNIS0020Q
Security indicator does not turn ON or flash.
CAUTION:
Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.
Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.
Check systems shown in the “Action” column in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
Intelligent Key is not inserted into key slot.
Engine switch is not depressed.
Check Security Indicator HarnessNIS0020R
1. SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT-II
Check (“THEFT IND”) in “ACTIVE TEST” mode with CONSULT-II.
OK or NG
OK >> Security indicator lamp is OK.
NG >> GO TO 2.
Action Reference page
1. Check security indicator harnessBL-277
2. Replace BCMBCS-17
Perform operation shown on display indicator lamp
should illuminate.
PIIA7005E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
BL-279
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Revision: 2006 January2006 M35/M45
2. CHECK POWER SUPPLY CIRCUIT FOR BCM
Check voltage between BCM and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.
50A fusible link (letter F , located in the fuse and fusible link box)
10A fuse [No.21, located in the fuse block (J/B)]
15A fuse [No. 1, located in the fuse block (J/B)]
Harness for open or short between fusible link and BCM
Harness for open or short between fuse and BCM
3. CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. REPLACE BCM
1. Replace BCM
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”.
Does the engine start?
Yes >> BCM is malfunctioning.
Replace BCM.
Perform initialization with CONSULT-II
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”
No >> ECM is malfunctioning.
Replace ECM.
Perform initialization or re-communicating function
For initialization, refer to “CONSULT-II Operation Manual NATS-IVIS/NVIS”
For re-communicating function, refer to BL-252, "ECM Re-Communicating Function"
Terminals
Condition of
ignition switchVoltage (V)
(Approx.) (+)
(–)
BCM connector Terminal
M1 38
GroundON
Battery voltage
M242
OFF
55
PIIB5934E
BCM connector Terminal
GroundContinuity
M2 52 Yes
PIIB5935E