2005 INFINITI FX35 Key switch

DI-78
WARNING CHIME
Revision: 2005 July 2005 FX
3. CHECK INTELLIGENT KEY UNIT INPUT SIGNAL
With CONSULT-ll
1. Select “INTELLIGENT KEY”.
2. With “DATA MONITOR”, confirm “PUSH SW” when the ignition knob switch is operated. Refer to BL-119, "
CONSULT-II Func-
tions" .
Without CONSULT-ll
Check voltage between Intelligent Key unit harness connector M34
terminal 27 (L/W) and ground.
OK or NG
OK >> Replace Intelligent Key unit. Refer to BL-151, "Removal
and Installation of Intelligent Key Unit" .
NG >> GO TO 4.
4. CHECK IGNITION KNOB SWITCH POWER SUPPLY CIRCUIT
1. Disconnect key switch and ignition knob switch connector.
2. Check voltage between key switch and ignition knob switch har- ness connector M22 terminal 1 (L/R) and ground.
OK or NG
OK >> GO TO 5.
NG >> Check harness between key switch and ignition knob
switch and fuse.
“PUSH SW”
When ignition knob switch
is pushed : ON
When ignition knob switch
is withdrawn : OFF
SKIA5064E
27 (L/W) – Ground
When ignition knob switch
is pushed : Approx. 12 V
When ignition knob switch
is withdrawn : Approx. 0 V
SKIA5065E
1 (L/R) – Ground : Battery voltage
SKIA5068E

WARNING CHIME DI-79
C
D E
F
G H
I
J
L
M A
B
DI
Revision: 2005 July 2005 FX
5. CHECK IGNITION KNOB SWITCH
Check continuity between key switch and ignition knob switch con-
nector M22 terminals 1 and 2.
OK or NG
OK >> GO TO 6.
NG >> Replace key switch and ignition knob switch.
6. CHECK IGNITION KNOB SWITCH CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check continuity between Intelligent Key unit harness connector M34 terminal 27 (L/W) and key switch and ignition knob switch
harness connector M22 terminal 2 (L/W).
3. Check continuity between Intelligent Key unit harness connector M34 terminal 27 (L/W) and ground.
OK or NG
OK >> Replace Intelligent Key unit. Refer to BL-151, "Removal
and Installation of Intelligent Key Unit" .
NG >> Repair harness or connector.
Light Warning Chime Does Not OperateAKS007OJ
1. CHECK WARNING CHIME OPERATION
Check the chime under conditions in exception of light warning chime operation.
Does warning chime sound?
YES >> GO TO 2.
NO >> Go to DI-71, "
All Warnings Are Not Operated" .
2. CHECK BCM INPUT SIGNAL
1. Select “BCM”.
2. With “DATA MONITOR” of “BUZZER”, confirm “LIGHT SW 1ST” when the lighting switch is operated.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> Check the lighting switch. Refer to LT- 11 0 , "
Removal
and Installation" .
1 – 2
When ignition knob
switch is pushed : Continuity should exist.
When ignition knob
switch is withdrawn : Continuity should not exist.
SKIA5066E
27 (L/W) – 2 (L/W) : Continuity should exist.
27 (L/W) – Ground : Continuity should not exist.
SKIA5067E
“LIGHT SW 1ST”
Lighting switch ON (1st position) : ON
Lighting switch OFF : OFF
PKIB1956E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) EC-53
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
DescriptionABS00E90

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-213, "
IVIS (INFINITI VEHICLE IMMOBILIZER
SYSTEM-NATS)" .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and all IVIS (NATS) ignition key ID registration, refer to CONSULT-II Operation Manual,
IVIS/NVIS.
SEF543X

EC-70
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2005 July 2005 FX
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following three functions.
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.
MIL Flashing Without DTC
When any SRT codes are not set, MIL may flash without DTC. For the details, refer to EC-63, "How to Display
SRT Status" .
HOW TO SWITCH DIAGNOSTIC TEST MODE
NOTE:

It is better to count the time accurately with a clock.

It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.

Always ECM returns to Diagnostic Test Mode I after ignition switch is turned OFF.
How to Set Diagnostic Test Mode II (Self-Diagnostic Results)
1. Confirm that accelerator pedal is fully released, turn ignition switch ON and wait 3 seconds.
2. Repeat the following procedure quickly 5 times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the MIL starts blinking.
Diagnostic Test
Mode KEY and ENG.
Sta tus Function Explanation of Function
Mode I Ignition switch in ON position
Engine stopped BULB CHECK This function checks the MIL bulb for damage (blown,
open circuit, etc.).
If the MIL does not come on, check MIL circuit.
Engine running MALFUNCTION WARNING This is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MIL will light up to inform the driver
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.

Misfire (Possible three way catalyst damage)

One trip detection diagnoses
Mode II Ignition switch in ON position
Engine stopped SELF-DIAGNOSTIC
RESULTS This function allows DTCs and 1st trip DTCs to be read.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut

EC-96
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2005 July 2005 FX
32. ERASE UNNECESSARY DTC
After this inspection, unnecessary DTC might be displayed.
Erase the stored memory in ECM and TCM. Refer to EC-68, "
How to Erase DTC" and AT- 4 0 , "HOW TO
ERASE DTC" .
>> GO TO 4.
33. CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to BL-215, "
ECM Re-Communicating Function" .
>> GO TO 4.
VIN RegistrationABS00E92
DESCRIPTION
VIN Registration is an operation to registering VIN in ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM may be required for Inspection & Maintenance (I/M).
OPERATION PROCEDURE
With CONSULT-II
1. Check the VIN of the vehicle and note it. Refer to GI-49, "IDENTIFICATION INFORMATION" .
2. Turn ignition switch ON and engine stopped.
3. Select “VIN REGISTRATION” in “WORK SUPPORT” mode.
4. Follow the instruction of CONSULT-II display.
Accelerator Pedal Released Position LearningABS006KE
DESCRIPTION
Accelerator Pedal Released Position Learning is an operation to learn the fully released position of the accel-
erator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON and wait at least 2 seconds.
5. Turn ignition switch OFF and wait at least 10 seconds.
Throttle Valve Closed Position LearningABS006KF
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
PBIB2242E

EC-416
[VQ35DE]
DTC P1065 ECM POWER SUPPLY
Revision: 2005 July 2005 FX
4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
See EC-413
.
5. Is the 1st trip DTC P1065 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3. Perform DTC Confirmation Procedure.
See EC-413
.
4. Is the 1st trip DTC P1065 displayed again?
Ye s o r N o
Yes >> GO TO 5.
No >> INSPECTION END
5. REPLACE ECM
1. Replace ECM.
2. Perform initialization of IVIS(NATS) system and registration of all IVIS(NATS) ignition key IDs. Refer to BL-215, "
ECM Re-Communicating Function" .
3. Perform EC-96, "
VIN Registration" .
4. Perform EC-96, "
Accelerator Pedal Released Position Learning" .
5. Perform EC-96, "
Throttle Valve Closed Position Learning" .
6. Perform EC-97, "
Idle Air Volume Learning" .
>> INSPECTION END

EC-744
[VK45DE]
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2005 July 2005 FX
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)PFP:28591
DescriptionABS00E46

If the security indicator lights up with the ignition switch in
the ON position or “NATS MALFUNCTION” is displayed on
“SELF-DIAG RESULTS” screen, perform self-diagnostic
results mode with CONSULT-II using NATS program card.
Refer to BL-213, "
IVIS (INFINITI VEHICLE IMMOBILIZER
SYSTEM-NATS)" .

Confirm no self-diagnostic results of IVIS (NATS) is dis-
played before touching “ERASE” in “SELF-DIAG RESULTS”
mode with CONSULT-II.

When replacing ECM, initialization of IVIS (NATS) system
and registration of all IVIS (NATS) ignition key IDs must be
carried out with CONSULT-II using NATS program card.
Therefore, be sure to receive all keys from vehicle owner. Regarding the procedures of IVIS (NATS)
initialization and IVIS (NATS) ignition key ID registration, refer to CONSULT-II operation manual,
IVIS/NVIS.
SEF543X

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-761
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
ON BOARD DIAGNOSTIC SYSTEM FUNCTION
The on board diagnostic system has the following four functions.
When there is an open circuit on MIL circuit, the ECM cannot warn the driver by lighting up MIL when there is
malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses are continuously detected as
NG for 5 trips, ECM warns the driver that engine control system malfunctions and MIL circuit is open by means
of operating fail-safe function.
The fail-safe function also operates when above diagnoses except MIL circuit are detected and demands the
driver to repair the malfunction.
MIL Flashing Without DTC

When any SRT codes are not set, MIL may flash without DTC. For the details, refer to EC-754, "How to
Display SRT Status" .

If the ECM is in Diagnostic Test Mode II, MIL may flash when engine is running. In this case, check ECM
diagnostic test mode. EC-762, "
HOW TO SWITCH DIAGNOSTIC TEST MODE" .
How to switch the diagnostic test (function) modes, and details of the above functions are described later.
EC-762, "
HOW TO SWITCH DIAGNOSTIC TEST MODE" .
The following emission-related diagnostic information is cleared when the ECM memory is erased.
–Diagnostic trouble codes
–1st trip diagnostic trouble codes
–Freeze frame data
–1st trip freeze frame data
–System readiness test (SRT) codes
Diagnostic Test
Mode KEY and ENG.
Status Function Explanation of Function
Mode I Ignition switch in ON position
Engine stopped BULB CHECK This function checks the MIL bulb for damage (blown,
open circuit, etc.).
If the MIL does not come on, check MIL circuit.
Engine running MALFUNCTION WARNING This is a usual driving condition. When a malfunction is
detected twice in two consecutive driving cycles (two trip
detection logic), the MIL will light up to inform the driver
that a malfunction has been detected.
The following malfunctions will light up or blink the MIL in
the 1st trip.

Misfire (Possible three way catalyst damage)

One trip detection diagnoses
Mode II Ignition switch in ON position
Engine stopped SELF-DIAGNOSTIC
RESULTS This function allows DTCs and 1st trip DTCs to be read.
Engine running HEATED OXYGEN SENSOR 1 MONITOR This function allows the fuel mixture condition (lean or
rich), monitored by heated oxygen sensor 1, to be read.
Engine operating condition in fail-safe mode Engine speed will not rise more than 2,500 rpm due to the fuel cut