wiring INFINITI FX35 2008 Service Manual

EC-144
< SERVICE INFORMATION >[VQ35DE]
POWER SUPPLY AND GROUND CIRCUIT
Check the following.
 Harness or connectors E211, M41
 Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
14.CHECK 20A FUSE
1. Disconnect 20 A fuse from IPDM E/R.
2. Check 20A fuse.
OK or NG
OK >> GO TO 18.
NG >> Replace 20A fuse.
15.CHECK GROUND CONNECTIONS
Loosen and retighten ground screw on the body. Refer to EC-144, "
Ground Inspection".
OK or NG
OK >> GO TO 16.
NG >> Repair or replace ground connections.
16.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and ground. Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 17.
NG >> Repair open circuit or short to power in harness or connectors.
17.DETECTION MALFUNCTIONING PART
Check the following.
 Harness connectors F102, M82
 Harness for open or short between ECM and ground
>> Repair open circuit or shoat to power in harness connectors.
18.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17
NG >> Repair open circuit or short to power in harness or connectors.
Ground InspectionINFOID:0000000001325948
Ground connections are very important to the proper oper ation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted resistance can change the way a circuit works.
PBIB2625E
Continuity should exist.
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EC-146
< SERVICE INFORMATION >[VQ35DE]
DTC U1000, U1001 CAN COMMUNICATION LINE
DTC U1000, U1001 CAN COMMUNICATION LINE
DescriptionINFOID:0000000001325949
CAN (Controller Area Network) is a serial communication
line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
On Board Diagn osis LogicINFOID:0000000001325950
*1: This self-diagnosis has the one trip detection logic.
*2: The MIL will not light up for this self-diagnosis.
*3: This self-diagnosis has the one or two trip detection logic. (Models with ICC)
DTC Confirmation ProcedureINFOID:0000000001325951
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check 1st tip DTC.
3. If 1st trip DTC is detected, go to EC-147, "
Diagnosis Procedure".
DTC No.Trouble diagnosis
name DTC detecting condition Possible cause
U1000*
1
1000*1
CAN communication
line  When ECM is not transmitting or receiving
CAN communication signal of OBD (emission-
related diagnosis) for 2 seconds or more.  Harness or connectors
(CAN communication line is open or
shorted)
U1001*
2 *3
1001*2 *3
 When ECM is not transmitting or receiving
CAN communication signal other than OBD
(emission-related diagnosis) for 2 seconds or
more.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DTC U1000, U1001 CAN COMMUNICATION LINEEC-147
< SERVICE INFORMATION > [VQ35DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Wiring DiagramINFOID:0000000001325952
Diagnosis ProcedureINFOID:0000000001325953
Go to
LAN-43, "CAN System Specification Chart".
TBWM1378E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-148
< SERVICE INFORMATION >[VQ35DE]
DTC U1010 CAN COMMUNICATION
DTC U1010 CAN COMMUNICATION
DescriptionINFOID:0000000001325954
CAN (Controller Area Network) is a serial communication
line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
On Board Diagn osis LogicINFOID:0000000001325955
This self-diagnosis has the one trip detection logic.
DTC Confirmation ProcedureINFOID:0000000001325956
1. Turn ignition switch ON.
2. Check DTC.
3. If DTC is detected, go to EC-148, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001325957
1.INSPECTION START
With CONSULT-III
1. Turn ignition switch ON.
2. Select “SELF-DIAG RESULTS” mode with CONSULT-III.
3. Touch “ERASE”.
4. Perform DTC Confirmation Procedure.
See EC-148, "
DTC Confirmation Procedure".
5. Is the DTC U1010 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3. Perform DTC Confirmation Procedure.
See EC-148, "
DTC Confirmation Procedure".
4. Is the DTC U1010 displayed again?
Ye s o r N o
Ye s > > G O T O 2 .
No >> INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs.
Refer to BL-187, "
ECM Re-Communicating Function".
3. Perform EC-84, "
VIN Registration".
4. Perform EC-85, "
Accelerator Pedal Released Position Learning".
5. Perform EC-85, "
Throttle Valve Closed Position Learning".
6. Perform EC-85, "
Idle Air Volume Learning".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
U1010
1010 CAN communication bus When detecting error during the initial diagno-
sis of CAN controller of ECM.
ECM
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EC-152
< SERVICE INFORMATION >[VQ35DE]
DTC P0011, P0021 IVT CONTROL
Yes >> Check timing chain installation. Refer to
EM-64.
No >> GO TO 7.
7.CHECK LUBRICATION CIRCUIT
Refer to EM-65, "
Removal and Installation".
OK or NG
OK >> GO TO 8.
NG >> Clean lubrication line.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
For Wiring Diagram, refer to EC-320
for CKP sensor (POS) and EC-325 for CMP sensor (PHASE).
>> INSPECTION END
Component InspectionINFOID:0000000001325963
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
1. Disconnect intake valve timing control solenoid valve harness connector.
2. Check resistance between intake valve timing control solenoid
valve as follows.
If NG, replace intake valve timing control solenoid valve.
If OK, go to next step.
3. Remove intake valve timing control solenoid valve.
4. Provide 12V DC between intake valve timing control solenoid valve terminals and then interrupt it. Make sure that the plunger
moves as shown in the figure.
CAUTION:
Do not apply 12V DC continuo usly for 5 seconds or more.
Doing so may result in damage to the coil in intake valve
timing control solenoid valve.
If NG, replace intake valve timing control solenoid valve.
NOTE:
Always replace O-ring when intake valve timing control
solenoid valve is removed.
Removal and InstallationINFOID:0000000001325964
INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EM-64.
Terminal Resistance
1 and 2 7.0 - 7.5 Ω [at 20 °C (68 °F)]
1 or 2 and ground ∞Ω
(Continuity should not exist.)
PBIB0193E
PBIB2275E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-154
< SERVICE INFORMATION >[VQ35DE]
DTC P0031, P0032,
P0051, P0052 A/F SENSOR 1 HEATER
Wiring Diagram
INFOID:0000000001325969
BANK 1
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
TBWM1596E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-158
< SERVICE INFORMATION >[VQ35DE]
DTC P0031, P0032,
P0051, P0052 A/F SENSOR 1 HEATER
3. Check voltage between air fuel ratio sensor 1 terminal 3 and
ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E64, F65
 IPDM E/R harness connector E7
 10A fuse
 Harness for open or short between air fuel ratio sensor 1 and fuse
>> Repair or replace harness or connectors.
4.CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 2 (bank 1) or 24 (bank 2) and air fuel ratio (A/F) sensor
1 terminal 4.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Refer to EC-158, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning air fuel ratio (A/F) sensor 1.
6.CHECK INTERMITTENT INCIDENT
Perform EC-139
.
>> INSPECTION END
Component InspectionINFOID:0000000001325971
AIR FUEL RATIO (A/F) SENSOR 1 HEATER
Voltage: Battery voltage
PBIB1683E
Continuity should exist.
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-162
< SERVICE INFORMATION >[VQ35DE]
DTC P0037, P
0038, P0057, P0058 HO2S2 HEATER
Wiring Diagram
INFOID:0000000001325977
BANK 1
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring in put/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
TBWM1590E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-166
< SERVICE INFORMATION >[VQ35DE]
DTC P0037, P
0038, P0057, P0058 HO2S2 HEATER
3. Check voltage between HO2S2 terminal 2 and ground with
CONSULT-III or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E64, F65
 IPDM E/R harness connector E7
 10A fuse
 Harness for open or short between heated oxygen sensor 2 and fuse
>> Repair open circuit or short ground or short to power in harness or connectors.
4.CHECK HO2S2 HEATER OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal and HO2S2 terminal as follows. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK HEATED OXYGEN SENSOR 2 HEATER
Refer to EC-166, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace malfunctioning heated oxygen sensor 2.
6.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
Component InspectionINFOID:0000000001325979
HEATED OXYGEN SENSOR 2 HEATER
Voltage: Battery voltage
PBIA9576J
DTC Te r m i n a l s
Bank
ECM Sensor
P0037, P0038 25 3 1
P0057, P0058 6 3 2
Continuity should exist.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DTC P0075, P0081 IVT CONTROL SOLENOID VALVE
EC-169
< SERVICE INFORMATION > [VQ35DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
Wiring DiagramINFOID:0000000001325985
BANK 1
Specification data are reference values
and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
TBWM1394E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C