2007 INFINITI M35 check engine light

ELECTRICAL LOAD SIGNAL
EC-1387
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ELECTRICAL LOAD SIGNALPFP:25350
DescriptionNBS005QB
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, heater fan switch sig-
nal, etc.) is transferred through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeNBS005QC
Specification data are reference values.
Diagnostic ProcedureNBS005QD
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following
conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL

Ignition switch: ONRear window defogger switch: ON
and/or
Lighting switch: 2ND positionON
Rear window defogger switch and light-
ing switch: OFFOFF
HEATER FAN SW

Engine: After warming up, idle
the engineHeater fan switch: ON ON
Heater fan switch: OFF OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF
PBIB0103E

SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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Freezing

Water intrusion

Electrical load

Cold or hot start up
Get a thorough description of the incident from the customer. It is important for simulating the conditions of the
problem.
Vehicle Vibration
The problem may occur or become worse while driving on a rough road or when engine is vibrating (idle with
A/C on). In such a case, you will want to check for a vibration related condition. Refer to the following illustra-
tion.
CONNECTORS & HARNESS
Determine which connectors and wiring harness would affect the electrical system you are inspecting. Gently
shake each connector and harness while monitoring the system for the incident you are trying to duplicate.
This test may indicate a loose or poor electrical connection.
HINT
Connectors can be exposed to moisture. It is possible to get a thin film of corrosion on the connector termi-
nals. A visual inspection may not reveal this without disconnecting the connector. If the problem occurs inter-
mittently, perhaps the problem is caused by corrosion. It is a good idea to disconnect, inspect and clean the
terminals on related connectors in the system.
SENSORS & RELAYS
Gently apply a slight vibration to sensors and relays in the system you are inspecting.
This test may indicate a loose or poorly mounted sensor or relay.
ENGINE COMPARTMENT
There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the
things to check for are:

Connectors not fully seated.

Wiring harness not long enough and is being stressed due to engine vibrations or rocking.

Wires laying across brackets or moving components.

Loose, dirty or corroded ground wires.

Wires routed too close to hot components.
To inspect components under the hood, start by verifying the integrity of ground connections. (Refer to Ground
Inspection described later.) First check that the system is properly grounded. Then check for loose connection
by gently shaking the wiring or components as previously explained. Using the wiring diagrams inspect the
wiring for continuity.
BEHIND THE INSTRUMENT PANEL
An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehi-
cle vibration can aggravate a harness which is routed along a bracket or near a screw.
SGI839

CONSULT-II CHECKING SYSTEM
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CONSULT-II CHECKING SYSTEMPFP:00000
DescriptionNAS0007S

CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the
vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.

Refer to “CONSULT-II Software Operation Manual” for more information.
Function and System Application NAS0007T
x: Applicable
*: NISSAN Anti-Theft System (INFINITI/NISSAN Vehicle Immobilizer System)Diagnostic test
modeFunction
ENGINE
A/T
AIR BAG
METER A/C AMP
BCM
AUTO DRIVE POS.
ABS (Including VDC)
NATS (IVIS/NATS) *
IPDM E/R
ICC
ALL MODE AWD/4WD
INTELLIGENT KEY
LDW
AIR PRESSURE MONITOR
RAS/HICAS
ADAPTIVE LIGHT
PRECRASH SEATBELT
MULTI AV
Work supportThis mode enables a technician to adjust
some devices faster and more accurately by
following the indications on CONSULT-II.x---xxx--x-xxx-x--
Self-diagnostic
resultsSelf-diagnostic results can be read and
erased quickly.xxxxxxxxxxxxxxxxxx
Trouble diagnos-
tic recordCurrent self-diagnostic results and all trouble
diagnostic records previously stored can be
read.--x---------------
Data monitor Input/Output data in the ECU can be read. x x - x x x x - x x x x x x x x x x
CAN diagnosis
support monitorThe condition of CAN communication line
can be read.xx- xxxx- xxxxxxxxxx
Active testDiagnostic Test Mode in which CONSULT-II
drives some actuators apart from the ECUs
and also shifts some parameters in a speci-
fied range.x- - - xxx -xxxxxxxx- -
DTC & SRT con-
firmationThe results of SRT (System Readiness Test)
and the self-diagnosis status/result can be
confirmed.x- ----------------
DTC work sup-
portThe operating condition to confirm Diagnosis
Trouble Codes can be selected.xx----------------
ECU (ECM/TCM)
part numberECU (ECM/TCM) part number can be read. x x - - x x x - - x x x x x x x x x
ECU discrimi-
nated No.Classification number of a replacement ECU
can be read to prevent an incorrect ECU from
being installed.-- x---------------
Function testThis mode can show results of self-diagnosis
of ECU with either 'OK' or 'NG'. For engines,
more practical tests regarding sensors/
switches and/or actuators are available.xxx---x-----------
Control unit ini-
tializationAll registered ignition key IDs in NATS com-
ponents can be initialized and new IDs can
be registered.-- -----x----------
AV COMM moni-
torThe condition of AV communication can be
Indicated.------------ ---- -x

TERMINOLOGY
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Exhaust gas recirculation control-BPT
valveEGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid
valveEGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature sen-
sor
EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memoryFEEPROM ***
Flash erasable programmable read only
memoryFEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve*** PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valveIACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valveIACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection System MFI system Fuel injection controlNEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM

TROUBLE DIAGNOSES WORK FLOW
LAN-27
[CAN FUNDAMENTAL]
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2. CAN DIAG SUPPORT MNTR: Check each item on “CAN DIAG SUPPORT MNTR”. Draw a line on the
diagnosis sheet to indicate the error circuit.
a. Reception item of “ENGINE”: On “TCM”, “UNKWN” is indicated. This means ECM cannot receive the sig-
nal from TCM. Draw a line to indicate an error between ECM and TCM (line 2-a in the figure).
NOTE:
If “UNKWN” is indicated on “TRANSMIT DIAG”, then the control unit cannot transmit CAN communication
signal to each unit. Draw a line between the control unit and the splice.
b. Reception item of “ADAPTIVE LIGHT”: On “TCM”, “UNKWN” is indicated. This means AFS cannot
receive the signal from TCM. Draw a line to indicate an error between AFS and TCM (line 2-b in the fig-
ure).
c. Reception item of “MULTI AV”: “UNKWN” is not indicated. This indicates normal communication between
AV and its receiving units. Do not draw any line.
SKIB8725E

LAN-50
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
CAN System Specification ChartNKS004FU
Determine CAN system type from the following specification chart. Then choose the correct diagnosis sheet.
NOTE:
Refer to LAN-19, "
CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION
CHART)" for how to use CAN system specification chart.
×: ApplicableBody typeSedan
Axle 2WD AWD
Engine VQ35DE/VK45DE VQ35DE
Transmission A/T
Brake control VDC
Adaptive front-lighting system×××××× × ×
Lane departure warning×× ×
Navigation system× ××× ××
Rear active steer×× ×
ICC system×× ×
CAN system type 1234567891011
Diagnosis sheetLAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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LAN-
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CAN communication signal chartLAN-52, "TYPE 1/TYPE 2/TYPE 3/TYPE 4/TYPE 5/TYPE
6/TYPE 7"
LAN-55, "TYPE 8/TYPE 9/TYPE
10/TYPE 11"

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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Revision: 2007 April2007 M35/M45
Terminals and Reference Values for IPDM E/RNKS003PF
NOTE:
Daytime running light is operating: Lighting switch in OFF position with engine running and parking brake is released.
How to Perform Trouble DiagnosisNKS003PG
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 7 8 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 9 2 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. INSPECTION END
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
20 R Headlamp low (RH) ON Lighting switch 2ND positionOFF Approx. 0 V
ON Battery voltage
27 BR Headlamp high (RH) ONLighting switch HIGH or PASSING
positionOFF Approx. 0 V
ON Battery voltage
Daytime running light is operating
NOTEApprox. 6.5 V
28 R/Y Headlamp high (LH) ONLighting switch HIGH or PASSING
positionOFF Approx. 0 V
ON Battery voltage
Daytime running light is operating
NOTEApprox. 6.5 V
30 R/B Headlamp low (LH) ON Lighting switch 2ND positionOFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
49 L CAN − H— — —
50 P CAN − L— — —
51 B Ground ON — Approx. 0 V
58 SBDaytime light relay
signalONDaytime running light is operating
NOTEApprox. 0 V
Daytime running light is not operating Battery voltage

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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Revision: 2007 April2007 M35/M45
NOTE:
This item is displayed, but cannot be monitored.
ACTIVE TEST
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
DOOR SW - AS “ON/OFF”Displays status of the passenger door as judged from the passenger door switch signal. (door
is open: ON/door is closed: OFF)
DOOR SW - RR “ON/OFF”Displays status of the rear door as judged from the rear door switch (RH) signal. (door is
open: ON/door is closed: OFF)
DOOR SW - RL “ON/OFF”Displays status of the rear door as judged from the rear door switch (LH) signal. (door is open:
ON/door is closed: OFF)
BACK DOOR SW
NOTE “OFF” —
PKB SW “ON/OFF”Displays status (parking brake released: ON/ parking brake applied: OFF) of parking brake
switch judged from parking brake switch signal.
ENGINE RUN “ON/OFF”Displays status (engine running: ON/ engine stopped: OFF) of engine judged from engine run
signal.
I - KEY LOCK “ON/OFF” Displays “locked (ON)/other (OFF)” status, determined from lock signal.
OPTICAL SENSOR “0 - 5V” Displays “outside brightness (close to 5 V when light/close to 0 V when dark)” judged from
optical sensor signal.
VEHICLE SPEED “km/h” Displays vehicle speed as judged from vehicle speed signal.Monitor item Contents
Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
FR FOG LAMP Allows front fog lamp relay to operate by switching ON-OFF.
DAYTIME RUNNING LIGHT Allows daytime relay to operate by switching ON-OFF.
HEAD LAMP (HI, LO) Allows headlamp relay to operate by switching ON-OFF.