display INFINITI M35 2007 Factory Service Manual

TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
Inspection 5: Steering Angle Signal MalfunctionNGS000EU
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and steering angle sensor har-
ness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. ADJUST NEUTRAL POSITION OF STEERING ANGLE SENSOR
Adjust the steering angle sensor neutral position, and then perform self-diagnosis again. Refer to BRC-6,
"Adjustment of Steering Angle Sensor Neutral Position" .
Is the result of self-diagnosis normal?
OK >> Inappropriate neutral position adjustment of steering angle sensor.
NG >> GO TO 3.
3. CHECK STEERING ANGLE SENSOR POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF, and disconnect steering angle sensor harness connector M47.
2. Check continuity steering angle sensor harness connector M47
and ground.
3. Turn ignition switch ON, and then check voltage steering angle
sensor harness connector M47 and ground.
OK or NG
OK >> GO TO 4.
NG >> Steering angle sensor power supply and ground circuit
open or shorted. Repair or replace the applicable mal-
functioning circuit.
Self-diagnosis results
STEERING ANGLE SEN [NO CHANGE] [C1923]
STEERING ANGLE SEN [NO NEUT STATE] [C1924]
STEERING ANGLE SEN [NO SIGNAL] [C1920]
STEERING ANGLE SEN [C1926]
DTC (warning lamp blinks)
22
Steering angle sensor Ground Continuity
Terminal 2 — Yes
SGIA1270E
Steering angle sensor Ground Continuity
Terminal 3 —Battery voltage
(approx. 12V)
SGIA1271E

STC-40
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
4. DATA MONITOR
1. Connect steering angle sensor harness connector.
2. Select “DATA MONITOR” on “STEERING ANG” mode, and then check the steering angle.
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Replace steering angle sensor and adjust neutral position of steering angle sensor. Refer to BRC-
6, "Adjustment of Steering Angle Sensor Neutral Position" .
Inspection 6: Rear Main Signal and Rear Sub Signal MalfunctionNGS000EV
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Steering condition DATA MONITOR
Straight-ahead position – 3.5 - +3.5°
Turn wheel to the right by 90°Approx. R 90°
Turn wheel to the left by 90°Approx. R 90°
Self-diagnosis results
RR ST ANGLE SENSOR [MAIN SIGNAL] [C1915]
RR ST ANGLE SENSOR [SUB SIGNAL] [C1916]
RR ST ANGLE SENSOR [OFFSET SIG1] [C1917]
RR ST ANGLE SENSOR [OFFSET SIG2] [C1918]
RR ST ANGLE SENSOR [ABNORMAL VOL] [C1914]
DTC (warning lamp blinks)
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TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
Inspection 7: VDC MalfunctionNGS000EW
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> GO TO 2.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform VDC self-diagnosis. Refer to BRC-24, "
Self-Diagnosis" .
OK or NG
OK >> RAS control unit malfunction. Replace RAS control unit.
NG >> Repair or replace indicated part. After that, perform RAS self-diagnosis again to make sure that
there is no malfunction.
Self-diagnosis results
VDC [C1929]
DTC (warning lamp blinks)
26

STC-44
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TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Inspection 8: Engine Speed Signal MalfunctionNGS000EX
1. CHECK SPEEDOMETER
Start the engine, and then check the combination meter (tachometer) operation.
Does it operate normally?
YES >> GO TO 2.
NO >> Combination meter. Refer to DI-5, "
COMBINATION METERS" .
2. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector, and check terminal for deforma-
tion, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform self-diagnosis.
With CONSULT-II
Without CONSULT-II
Is above displayed on self-diagnosis display?
YES >> RAS control unit malfunction. Replace RAS control unit.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Inspection 9: CAN Communication System MalfunctionNGS000EY
1. CHECK RAS CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect RAS control unit harness connector and rear wheel steering angle
sensor harness connector, and check terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform CONSULT-II self-diagnosis.
Is above displayed on self-diagnosis display?
YES >>
If “CAN COMM [U1000]” is displayed, print out self–diagnosis. And then, GO TO LAN-50, "CAN
System Specification Chart" .

Replace RAS control unit if “CONTROL UNIT [CAN] [U1010]” is displayed.
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Self-diagnostic results
MOTOR OUTPUT [C1921]
DTC (warning lamp blinks)
33
Self-diagnostic results
CAN COMM CIRCUIT [U1000]
CONTROL UNIT (CAN) [U1010]

TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
Diagnosis Chart by Symptom 1NGS000F1
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform RAS self-diagnosis.

With CONSULT-II: STC-28, "SELF-DIAG RESULT MODE"

Without CONSULT-II: STC-31, "Diagnosis Procedure with Self-Diagnosis Function (Without CONSULT-
II)"
Are malfunctioning items displayed in self-diagnosis results?
YES >> Repair or replace any malfunctioning items.
NO >> GO TO 2.
2. CHECK RAS STATIC/DYNAMIC CHARACTERISTICS
Check RAS static/dynamic characteristics. Refer to STC-49, "
Check RAS Static/Dynamic Characteristics" .
Is the malfunction corrected?
YES >> INSPECTION END
NO >> Perform the following check, and then check the symptom again.

Adjust neutral position of steering angle sensor. Refer to BRC-6, "Adjustment of Steering Angle
Sensor Neutral Position" .

Steering angle sensor mounting condition. Refer to BRC-60, "Removal and Installation" .
Diagnosis Chart by Symptom 2NGS000F2
The steering force does not change smoothly according to the vehicle speed (Heavy steering force with the
vehicle stopped/Light handle operation during high-speed driving)
1. CHECK (1): POWER STEERING SOLENOID VALVE SIGNAL
1. Start engine.
2. Change the vehicle speed from 0 to 100 km/h (0 to 62 MPH)
slowly, and then check voltage RAS control unit harness con-
nector B476.
OK or NG
OK >> GO TO 2.
NG >> GO TO 7.
2. CHECK (2): POWER STEERING SOLENOID VALVE SIGNAL
1. Activate fail-safe function by running engine speed at 1,500 rpm or higher for 10 seconds with the vehicle
stopped.
2. Change the engine speed to the idling speed, approx. 1,600
rpm, and approximately 3,000 rpm slowly, and then check volt-
age RAS control unit harness connector B476.
OK or NG
OK >> GO TO 3.
NG >> GO TO 7.Terminal 36 – 34 : The voltage has changed from
approximately 4.4 - 6.6 V to approxi-
mately 2.4 - 3.6 V.
SGIA1281E
Terminal 36 – 34 : The voltage is changed from
approximately 5.5 V to approximately
2.1 V step-by-step.
SGIA1281E

STC-48
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK POWER STEERING SOLENOID VALVE CONNECTOR
Turn ignition switch OFF, disconnect power steering solenoid valve harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 4.
NG >> Harness or connector open or shorted. Repair or replace any inoperative parts.
4. CHECK POWER STEERING SOLENOID VALVE POWER SUPPLY CIRCUIT
Check continuity between RAS control unit harness connector B476
(A) and power steering solenoid valve harness connector F25
(VQ35DE), E211 (VK45DE) (B).
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness. Repair or replace any inoper-
ative parts.
5. CHECK POWER STEERING SOLENOID VALVE GROUND CIRCUIT
Check continuity between power steering solenoid valve harness
connector F25 (VQ35DE), E211 (VK45DE) and ground.
OK or NG
OK >> GO TO 6.
NG >> Open or short in harness. Repair or replace any inoper-
ative parts.
6. CHECK POWER STEERING SOLENOID VALVE
Apply voltage power steering solenoid valve connector F25
(VQ35DE), E211 (VK45DE) and then make sure that the operating
sound (clicking sound) is heard.
OK or NG
OK >> Perform steering wheel turning force inspection. Refer
to PS-10, "
CHECKING STEERING WHEEL TURNING
FORCE" .
NG >> Power steering solenoid valve is inoperating. Replace it.
7. CHECK SELF-DIAGNOSIS RESULTS
Perform RAS self-diagnosis.

With CONSULT-II: STC-28, "SELF-DIAG RESULT MODE"

Without CONSULT-II: STC-31, "Diagnosis Procedure with Self-Diagnosis Function (Without CONSULT-
II)"
Are malfunctioning items displayed in self-diagnosis results?
YES >> Repair or replace any malfunctioning items.
NO >> RAS control unit malfunction. Replace it.
RAS C/U Power steering solenoid valve Continuity
Terminal 36 Terminal 1 Yes
SGIA1652E
Terminal 2 – Ground : Continuity should exist.
SGIA1283E
Terminal 1 (+) - 2 (-) : Operating sound is heard.
SGIA1284E

TF-20
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Trouble Diagnosis Chart for SymptomsNDS000DK
If AWD warning lamp turns ON, perform self-diagnosis. Refer to TF-22, "SELF-DIAG RESULT MODE" .
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunction.
AWD Control Unit Input/Output Signal Reference ValuesNDS000DL
AWD CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Symptom Condition Check item Reference page
AWD warning lamp does not turn ON when
the ignition switch is turned to ON.
(AWD warning lamp check)Ignition switch: ONCAN communication line
TF-33
Unified meter and A/C amp.
Unified meter control unit
AWD warning lamp does not turn OFF sev-
eral seconds after engine started.Engine runningCAN communication line
TF-33
Power supply and ground for AWD con-
trol unit
Unified meter and A/C amp.
Unified meter control unit
AWD solenoid
AWD actuator relay (integrated in AWD
control unit)
Wheel sensor
Heavy tight-corner braking symptom occurs
when the vehicle is driven and the steering
wheel is turned fully to either side after the
engine is started. (See NOTE.)

While driving

Steering wheel is
turned fully to either
sidesCAN communication line
TF-35Accelerator pedal position signal
AWD solenoid
Mechanical malfunction of electric con-
trolled coupling (clutch sticking etc.)
Vehicle does not enter AWD mode even
though AWD warning lamp turned to OFF.While drivingCAN communication line
TF-36
AWD solenoid
Mechanical malfunction of electric con-
trolled coupling (Mechanical engage-
ment of clutch is not possible.)
While driving, AWD warning lamp flashes
rapidly. (When flashing in approx. 1 minute
and then turning OFF.)
Rapid flashing: 2 times/secondWhile drivingProtection function is activated due to
heavy load to electric controlled cou-
pling. (AWD system is not malfunction-
ing. Also, optional distribution of torque
sometimes becomes rigid before lamp
flashes rapidly, but it is not malfunction.)TF-37
While driving, AWD warning lamp flashes
slowly. (When continuing to flash until turn-
ing ignition switch OFF)
Slow flashing: 1 time/2 seconds
While driving

Vehicle speed: 20 km/h
(12 MPH) or moreTire size is different between front and
rear of vehicle.TF-37
Monitor item [Unit] Content Condition Display value
FR RH SENSOR [km/h] or [mph]Wheel speed (Front wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
FR LH SENSOR [km/h] or [mph]Wheel speed (Front wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)

TROUBLE DIAGNOSIS
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Revision: 2007 April2007 M35/M45
*1 : The values are changed by throttle opening and engine speed.
*2 : Mode switch is not equipped, but displayed.
CONSULT-II Function (ALL MODE AWD/4WD)NDS000DM
FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
RR RH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
right)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
RR LH SENSOR [km/h] or [mph]Wheel speed (Rear wheel
left)Vehicle stopped 0.00 km/h (0.00 mph)
Vehicle running
CAUTION:
Check air pressure of tire under
standard condition.Approximately equal to
the indication on speed-
ometer (Inside of ±10%)
BATTERY VOLT [V]Power supply voltage for
AWD control unitIgnition switch: ON Battery voltage
THRTL POS SEN [%] Throttle opening conditionWhen depressing accelerator pedal
(Value rises gradually in response to
throttle position.)0 - 100%
ETS SOLENOID [A]Monitored value of current at
AWD solenoidEngine running

At idle speedApprox. 0.000A
Engine running

When depressing accelerator
pedalApprox. 0.000 - 0.500A*1
STOP LAMP SW [ON/OFF]Condition of brake pedal
operationBrake pedal: Depressed ON
Brake pedal: Released OFF
ENG SPEED SIG [RUN/STOP] Condition of engine runningEngine stopped
(Engine speed: Less than 400 rpm)STOP
Engine running
(Engine speed: 400 rpm or more)RUN
ETS ACTUATOR [ON/OFF]Operating condition of AWD
actuator relay (integrated in
AWD control unit)Engine stopped (Ignition
switch: ON)OFF
Engine running ON
4WD WARN LAMP [ON/OFF] AWD warning lamp conditionAWD warning lamp: ON ON
AWD warning lamp: OFF OFF
4WD MODE SW*
2 [AUTO]Input condition from mode
switchAlways AUTO
4WD MODE MON [AUTO] Control status of AWD Engine running AUTO
DIS-TIRE MONI [mm]Improper size tire installed
conditionVehicle running with normal size tire
installed0-4 mm
Vehicle running with improper size
tire installed (Front/rear tire size dif-
ference, wear condition)4-8 mm, 8- mm
P BRAKE SW [ON/OFF] Condition of parking brakeParking brake operated ON
Parking brake not operated OFF Monitor item [Unit] Content Condition Display value
Diagnostic test mode FunctionReference
page
Self-diagnostic results

Self-diagnostic results can be read and erased quickly.TF-22
Data monitor
Input/Output data in the AWD control unit can be read.TF-24

TF-22
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
SELF-DIAG RESULT MODE
Operation Procedure
1. Perform “CONSULT-II Start Procedure”. Refer to GI-38, "CONSULT-II Start Procedure" .
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
3. Stop vehicle. With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
NOTE:

The details for “TIME” are as follow:
–“0”: Error currently detected with AWD control unit.
–Except for “0”: Error detected in the past and memorized
with AWD control unit.
Detects frequency of driving after DTC occurs (frequency
of turning ignition switch “ON/OFF”).
Display Item List
CAUTION:

If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communica-
tion line.

Make sure that ABS warning lamp turns OFF by driving for a minute at vehicle speed of 30 km/h (19 MPH) or more after
turning ignition switch “OFF” if AWD warning lamp turns ON with system malfunction of “ABS SYSTEM [C1203]”. AWD
warning lamp may not turn OFF if it is normal unless ignition switch turns OFF at once and engine restarts after that.
How to Erase Self-Diagnostic Results
1. Perform applicably inspection of malfunctioning item and then repair or replace.
2. Start engine and drive at 30 km/h (19 MPH) or more for approx. 1 minute.
3. Make sure that ABS warning lamp turns OFF.
CAN diagnostic support monitor
The results of transmit/receive diagnosis of CAN communication can be read.LAN-44
Active test
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from
the AWD control unit and also shifts some parameters in a specified range.TF-25
ECU part number
AWD control unit part number can be read.TF-25
Diagnostic test mode FunctionReference
page
SDIA2217E
Items (CONSULT-II screen
terms)Diagnostic item is detected when... Check item
CONTROLLER FAILURE
[C1201]Malfunction has occurred inside AWD control unit.TF-27, "
AWD Control Unit"
ABS SYSTEM
[C1203]Malfunction related to wheel sensor has been detected by ABS actu-
ator and electric unit (control unit).TF-27, "ABS System"
4WD SOLENOID
[C1204]Malfunction related to AWD solenoid has been detected.TF-28, "AWD Solenoid"
4WD ACTUATOR RLY
[C1205]Malfunction has been detected from AWD actuator relay integrated
with AWD control unit, or malfunction related to AWD solenoid has
been detected.TF-31, "AWD Actuator
Relay" or TF-28, "AWD
Solenoid"
ENGINE SIGNAL 1
[C1210]Malfunction has been detected from ECM.TF-32, "Engine Control Sig-
nal"
CAN COMM CIRCUIT
[U1000]When AWD control unit is not transmitting or receiving CAN commu-
nication signal for 2 seconds or more.TF-32, "CAN Communica-
tion Line"
NO DTC IS DETECTED.
FURTHER TESTING MAY BE
REQUIRED.No NG item has been detected. —

TF-24
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II Start Procedure”. Refer to GI-38, "CONSULT-II Start Procedure" .
2. Touch “DATA MONITOR”.
3. Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.
Display Item List
×: Standard –: Not applicable
Monitor item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
FR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor RH signal is displayed.
FR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by front wheel
sensor LH signal is displayed.
RR RH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor RH signal is displayed.
RR LH SENSOR [km/h] or [mph]×××Wheel speed calculated by rear wheel
sensor LH signal is displayed.
BATTERY VOLT [V] – –×Power supply voltage for AWD control unit
THRTL POS SEN [%] – –×Throttle opening status is displayed.
ETS SOLENOID [A] – –×Monitored value of current at AWD sole-
noid
STOP LAMP SW [ON/OFF] – –×Stop lamp switch signal status via CAN
communication line is displayed.
ENG SPEED SIG [RUN/STOP] – –×Engine status is displayed.
ETS ACTUATOR [ON/OFF] – –×Operating condition of AWD actuator relay
(integrated in AWD control unit) is dis-
played.
4WD WARN LAMP [ON/OFF] – –×Control status of AWD warning lamp is dis-
played.
4WD MODE SW [AUTO] – –×Mode switch is not equipped, but dis-
played.
4WD MODE MON [AUTO] – –×Control status of AWD is displayed.
DIS-TIRE MONI [mm] – –×Improper size tire installed condition is dis-
played.
P BRAKE SW [ON/OFF] – –×Parking switch signal status via CAN com-
munication line is displayed.
Voltage [V] – –×The value measured by the voltage probe
is displayed.
Frequency [Hz] – –×
The value measured by the pulse probe is
displayed. DUTY-HI (high) [%] – –×
DUTY-LOW (low) [%] – –×
PLS WIDTH-HI [msec] – –×
PLS WIDTH-LOW [msec] – –×