check engine INFINITI M35 2007 Factory Service Manual

TF-34
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2007 April2007 M35/M45
2. CHECK AWD CONTROL UNIT POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect AWD control unit harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Check voltage between AWD control unit harness connector ter-
minals and ground.
5. Turn ignition switch “OFF”.
6. Check voltage between AWD control unit harness connector ter-
minals and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.

10A fuse [No.33, located in the fuse block (J/B)]

10A fuse [No.82, located in the IPDM E/R]

Harness for short or open between battery and AWD control unit harness connector terminal 9

Harness for short or open between ignition switch and AWD control unit harness connector ter-
minal 7

Ignition switch. Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
3. CHECK AWD CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect AWD control unit harness connector.
3. Check continuity between AWD control unit harness connector
F109 terminals 10, 11 and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
Connector Terminal Voltage (Approx.)
F1097 - Ground
Battery voltage
9 - Ground
SDIA2319E
Connector Terminal Voltage (Approx.)
F1097 - Ground 0V
9 - Ground Battery voltage
SDIA2320E
Continuity should exist.
SDIA1883E

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-35
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2007 April2007 M35/M45
4. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 5.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
5. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-II.
3. Start the engine, and then make sure that “4WD W/L” display
turns from "ON" to "OFF" after several seconds.
OK or NG
OK >> GO TO 6.
NG >> Perform trouble diagnosis for combination meter. Refer
to DI-18, "
Trouble Diagnosis" .
6. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace unified meter control unit assembly. Refer to DI-27, "
Disassembly and Assembly of Com-
bination Meter" .
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
NDS000DW
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunc-
tion.
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self-diagnosis for ECM. Refer to EC-55, "
Emission-Related Diagnostic Information" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
Monitor item Condition Display value
4WD W/LIgnition switch ON ON
Start engine (after several seconds) OFF
SDIA2065E

TF-36
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2007 April2007 M35/M45
3. CHECK SYSTEM FOR AWD SOLENOID
Perform trouble diagnosis for AWD solenoid system. Refer to TF-28, "
AWD Solenoid" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK ELECTRIC CONTROLLED COUPLING
1. Turn ignition switch “OFF”.
2. Set the selector lever to “N” (neutral) position and disengage the parking brake.
3. Lift up the vehicle.
4. Rotate the rear propeller shaft by hand.
5. Hold front propeller shaft lightly.
Does front propeller shaft rotate?
YES >> Replace electric controlled coupling for mechanical malfunction (clutch sticking etc.). Refer to TF-
45, "Disassembly and Assembly" .
NO >> GO TO 5.
5. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >>INSPECTION END
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
Vehicle Does Not Enter AWD Mode Even Though AWD Warning Lamp Turned to
OFF
NDS000DX
DIAGNOSTIC PROCEDURE
1. CHECK AWD WARNING LAMP
Turn ignition switch “ON”. (Do not start engine.)
Does AWD warning lamp turn on?
YES >> GO TO 2.
NO >> Go to TF-33, "
AWD Warning Lamp Does Not Turn ON When The Ignition Switch Is Turned to ON"
.
2. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 3.

TF-38
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2007 April2007 M35/M45
2. CHECK INPUT SIGNAL OF TIRE DIAMETER
With CONSULT-II
1. Start engine.
2. Drive at 20 km/h (12 MPH) or more for approx. 200 seconds.
3. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
4. Check monitor “DIS-TIRE MONI”.
Display of
“DIS-TIRE MONI”
“0-4mm”>>INSPECTION END
Except for “0-4mm”>>GO TO 3.
3. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 4.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
4. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace AWD control unit.
SDIA1900E

TF-44
TRANSFER ASSEMBLY
Revision: 2007 April2007 M35/M45
TRANSFER ASSEMBLYPFP:33100
Removal and InstallationNDS000E4
REMOVAL
1. Remove exhaust front tube with power tool. Refer to EX-3, "EXHAUST SYSTEM" .
2. Remove front and rear propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" and PR-6, "REAR
PROPELLER SHAFT" .
3. Disconnect transfer assembly harness connector and separate harness from transfer assembly.
4. Remove air breather hose. Refer to TF-43, "
AIR BREATHER HOSE" .
5. Remove control rod. Refer to AT- 2 2 6 , "
Control Rod Removal and Installation" .
6. Support transfer assembly and transmission assembly with a jack.
7. Remove rear engine mounting member and engine mounting insulator with power tool. Refer to EM-114,
"ENGINE ASSEMBLY" .
8. Lower jack to the position where the top transfer mounting bolts
can be removed.
9. Remove transfer mounting bolts with power tool and separate
transfer from transmission.
CAUTION:
Secure transfer assembly and transmission assembly to a
jack.
INSTALLATION
Note the following, and install in the reverse order of removal.

When installing the transfer to the transmission, install the
mounting bolts following the standard below.

After the installation, check the fluid level, fluid leakage and the
A/T positions. Refer to TF-9, "
Inspection" ,AT- 2 2 7 , "Adjustment
of A/T Position" .
PDIA0560J
Bolt No. 1 2 3 4
Quantity 4 3 2 1
Bolt length “ ” mm (in)75 (2.95) 45 (1.77) 40 (1.57) 30 (1.18)
Tightening torque
N·m (kg-m, ft-lb)37 (3.8, 27)
SDIA2284E

WT-34
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
Control Unit (EEPROM) MalfunctionNES000KT
MALFUNCTION CODE NO. 54
1. CHECK SELF-DIAGNOSIS RESULTS
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF-DIAG RESULT” mode for “AIR PRESSURE MONITOR” with CONSULT-II.
3. Touch “ERASE”.
4. Turn ignition switch OFF, and wait at least 10 seconds.
5. Start engine.
6. Perform the self-diagnosis again.
Is the
“CONTROL UNIT (EEPROM) [C1754]” displayed?
YES >> Replace low tire pressure warning control unit. Refer to WT-40, "Low Tire Pressure Warning Con-
trol Unit" .
NO >>INSPECTION END
CAN Communication System MalfunctionNES000KS
1. CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect low tire pressure warning control unit 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 CIRCUIT [U1000]” is displayed, print out self-diagnosis. And then, go to LAN-
50, "CAN System Specification Chart" .

Replace low tire pressure warning 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
CAN COMM CIRCUIT [U1000]
CONTROL UNIT [CAN] [U1010]

WW-48
FRONT WIPER AND WASHER SYSTEM
Revision: 2007 April2007 M35/M45
Removal and Installation of Washer TankNKS003X7
: Vehicle front
REMOVAL
1. Remove engine room cover (RH). Refer to EM-15, "Removal and Installation" .
2. Remove clip (A) and pull washer tank inlet (1) out of washer
tank.
3. Remove front bumper. Refer to EI-11, "
Removal and Installation" .
4. Disconnect washer pump connector and wash fluid level sensor connector.
5. Remove washer tank mounting nuts (A) and remove bolt (B).
6. Remove washer tube, and remove washer tank (1) from vehicle.
INSTALLATION
Note the following, and installation is the reverse order of removal.
CAUTION:
After installation, add water up to the upper level of washer tank inlet, and check for water leaks.
SKIB4258E
SKIB4259E
Washer tank mounting nuts : 4.5 N·m (0.46 kg-m, 40 in-lb)
Washer tank mounting bolt : 4.5 N·m (0.46 kg-m, 40 in-lb)