Power steering switch INFINITI FX35 2004 Owner's Manual

BL-120
INTELLIGENT KEY SYSTEM
Revision: 2004 November 2004 FX35/FX45
ENGINE START FUNCTION MALFUNCTION
Intelligent Key Operation Inspection
Mechanical Key Operation Inspection
WARNING CHIME FUNCTION MALFUNCTION
Before conducting the diagnosis in the following table, check “key reminder function” with power door lock sys-
tem.
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
KEY warning lamp on combination meter
lights up in red when ignition knob is
pressed. (door lock functions normal)1. Intelligent Key inspectionBL-147
2. Check inside key antennaBL-138
3. Replace Intelligent Key unitBL-146
KEY warning lamp on combination meter
lights up in green when ignition knob is
pressed.1. Check ignition knob switchBL-1272. Check steering lock unitBL-139
3. Check Intelligent Key unit power supply and ground circuitBL-124
4. Replace Intelligent Key unitBL-146
Ignition knob turns even without both Intelli-
gent Key and mechanical key.Replace steering lock unit —
Security indicator will still flash when igni-
tion knob is pressed.1. Check key switch (Intelligent Key unit input)BL-124
2. Replace Intelligent Key unitBL-146
Security indicator does not flash with igni-
tion knob released at LOCK position. (push
switch OFF)1. CAN communication systemBL-123
2. Ignition knob switch systemBL-127
3. Intelligent Key unit power supply and ground circuitBL-124
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition knob can not turn
Security indicator remains flashing with
mechanical key inserted.1. Check key switch (BCM input)BL-126
2. Replace Intelligent Key unitBL-146
KEY indicator and security indicator does
not flashing with mechanical key inserted.1. Check stop lamp switchBL-141
2. Replace Intelligent Key unitBL-146
Starter motor does not cranking.
(Ignition knob can turn)1. Check detention switchBL-1422. Check stop lamp switchBL-141
3. Replace Intelligent Key unitBL-146
Symptom Diagnoses service procedure Refer to page
Ignition key warning chime is inoperative.
(When mechanical key used)1. Check CAN communicationBL-123
2. Check key switch (Intelligent Key unit input)BL-124
3. Check door switchBL-128
4. Inspect combination meter (warning)DI-4
5. Replace Intelligent Key unitBL-146
Ignition knob OFF position warning
chime (for inside vehicle) does not
sound.
(Ignition key warning chime operates)1. Check CAN communicationBL-1232. Check ignition knob switchBL-127
3. Check key switch (Intelligent Key unit input)BL-124
4. Replace Intelligent Key unitBL-146

INTELLIGENT KEY SYSTEM
BL-141
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Revision: 2004 November 2004 FX35/FX45
4. STEERING LOCK UNIT COMMUNICATION CIRCUIT INSPECTION
1. Disconnect Intelligent Key unit and steering lock unit connectors.
2. Check continuity between Intelligent Key unit connector M34 terminals 1, 31, 32 and steering lock unit
connector M26 terminals 2, 3, 4.
3. Check continuity between steering lock unit connector M26 ter-
minals 2, 3, 4 and ground.
OK or NG
OK >> Replace steering lock unit.

After replacing steering lock unit, perform registration procedure. Refer to “CONSULT-II Opera-
tion Manual NATS-IVIS/NVIS”.
NG >> Repair or replace harness between steering lock unit and Intelligent Key unit.
Check Stop Lamp SwitchAIS004NM
1. STOP LAMP SWITCH POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch connector E210 termi-
nal 1 (GY) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between stop lamp switch
and fuse.
2. STOP LAMP SWITCH OPERATION INSPECTION
Check continuity between stop lamp switch connector E210 terminal
1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace stop lamp switch.1 (R/W) - 2 (R/W) : Continuity should exist.
31 (Y/B) - 4 (Y/B) : Continuity should exist.
32 (R/B) - 3 (R/B) : Continuity should exist.
2 (R/W) - Ground : Continuity should not exist.
3 (R/B) - Ground : Continuity should not exist.
4 (Y/B) - Ground : Continuity should not exist.
PIIA6799E
1 (GY) - Ground : Battery voltage
PIIA6811E
1 - 2
Brake pedal depressed : Continuity should exist.
Brake pedal not
depressed: Continuity should not exist.
PIIA6800E

BL-212
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for Steering Lock Unit/with Intelligent Key Sys-
tem
AIS004PF
Terminals and Reference Value for Intelligent Key Unit/with Intelligent Key Sys-
tem
AIS004PG
Te r -
minal
No.Wire
colorSignal DesignationMeasuring condition
Voltage (V)
Approx. Ignition knob
positionOperation or conditions
1 L/R Battery power supply LOCK — Battery voltage
2R/WSteering lock unit
power supplyLOCK — 5
3R/BSteering lock unit com-
munication signalLOCKPress ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
4Y/BSteering lock unit
ground—— 0
SIIA1911J
Te r -
minal
No.Wire
colorSignal designationMeasuring condition
Voltage (V)
Approx. Ignition knob
positionOperation or conditions
1R/WSteering lock unit
power supplyLOCK — 5
2 L CAN communication H — — —
3 R CAN communication L — — —
6 G/R Ignition power supply ON — Battery voltage
7 B/W Key switch LOCKInsert mechanical key into ignition key
cylinder.Battery voltage
Remove mechanical key from ignition
key cylinder.0
11 L/R Battery power supply — — Battery voltage
12 B GND — — 0
27 L/W Ignition knob switch —Press ignition knob. Battery voltage
Return ignition knob to LOCK position. 0
31 Y/BSteering lock unit
ground—— 0
32 R/BSteering lock unit com-
munication signalLOCKPress ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
SIIA1911J

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
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SECTION BRC
A
B
BRC
Revision: 2004 November 2004 FX35/FX45
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Brake System .................................. 3
Precautions for Brake Control .................................. 3
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 5
ON-VEHICLE SERVICE ............................................. 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ........................................................................... 6
Calibration of Decel G-sensor (AWD Model) ............ 6
SYSTEM DESCRIPTION ............................................ 8
System Diagram ....................................................... 8
VDC Function ........................................................... 8
TCS Function ........................................................... 8
ABS Function ........................................................... 8
EBD Function ........................................................... 9
Fail-Safe Function .................................................... 9
VDC / TCS SYSTEM ............................................. 9
ABS, EBD SYSTEM .............................................. 9
Hydraulic Circuit Diagram ...................................... 10
CAN COMMUNICATION ...........................................11
System Description ................................................. 11
TROUBLE DIAGNOSIS ............................................ 12
How to Proceed With Diagnosis ............................. 12
BASIC CONCEPT ............................................... 12
DIAGNOSIS FLOWCHART ................................ 13
ASKING COMPLAINTS ...................................... 14
EXAMPLE OF DIAGNOSIS SHEET ................... 14
Component Installation Location ............................ 15
Schematic .............................................................. 16
Wiring Diagram — VDC — ..................................... 17
Control Unit Input/Output Signal Standard ............. 23
REFERENCE VALUE FROM CONSULT-II ......... 23
CONSULT-II Functions ........................................... 25
CONSULT-II MAIN FUNCTION ........................... 25
CONSULT-II BASIC OPERATION PROCEDURE ... 26
SELF-DIAGNOSIS .............................................. 27
DATA MONITOR ................................................. 30
ACTIVE TEST ..................................................... 33
For Fast and Accurate Diagnosis ........................... 35
PRECAUTIONS FOR DIAGNOSIS ..................... 35
Basic Inspection ..................................................... 36
BASIC INSPECTION 1: BRAKE FLUID
AMOUNT, LEAKS, AND BRAKE PADS INSPEC-
TION .................................................................... 36
BASIC INSPECTION 2: POWER SYSTEM TER-
MINAL LOOSENESS AND BATTERY INSPEC-
TION .................................................................... 36
BASIC INSPECTION 3: ABS WARNING LAMP,
VDC OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPEC-
TION .................................................................... 37
Inspection 1: Wheel Sensor System ....................... 37
Inspection 2: Engine System .................................. 39
Inspection 3: VDC/TCS/ABS Control Unit System ... 40
Inspection 4: Pressure Sensor System .................. 40
Inspection 5: Steering Angle Sensor System ......... 42
Inspection 6: Yaw Rate/Side G-Sensor (2WD
model), Yaw Rate/Side/Decel G-sensor (AWD mod-
els) System ............................................................. 44
Inspection 7: Solenoid and VDC Change-Over
Valve System .......................................................... 46
Inspection 8: Actuator Motor System ...................... 47
Inspection 9: ABS Actuator and Electric Unit (Con-
trol Unit) Power Supply and Ground System .......... 48
Inspection 10: Stop Lamp Switch System .............. 50
Inspection 11: Brake Fluid Level Switch System .... 51
Inspection 12: When “ST ANG SEN SIGNAL”
Appears on Self-Diagnosis Results Display ........... 52
Inspection 13: When “DECEL G SEN SET” Appears
on Self-Diagnosis Results Display (AWD Model) ... 52
Inspection 14: CAN Communication System .......... 53
Component Inspection ............................................ 53
VDC OFF SWITCH ............................................. 53
Symptom 1: Excessive ABS Function Operation

TROUBLE DIAGNOSIS
BRC-23
[VDC/TCS/ABS]
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BRC
Revision: 2004 November 2004 FX35/FX45
Control Unit Input/Output Signal StandardAFS001SP
REFERENCE VALUE FROM CONSULT-II
CAUTION:
The display shows ABS actuator and electric unit (control unit) calculation data, so a normal value
might be displayed even in the event the output circuit (harness) is open or short-circuited.
Monitor item Display contentData monitor
Note: Error inspection
checklist
ConditionReference value in
normal operation
SLCT LVR POSI A/T shift positionP: P position
R: R position
N: N position
D: D position
—
GEAR A/T gear position1: 1st gear
2: 2nd gear
3: 3rd gear
4: 4th gear
5: 5th gear
FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSORWheel speedVehicle stopped 0 [km/h (MPH)]
BRC-37, "
Inspection 1:
Wheel Sensor System"Vehicle running (Note 1)Almost in accor-
dance with speed-
ometer display
(within ±10 %)
ACCEL POS SIG Open/close condition
of throttle valve (linked
with accelerator pedal).Accelerator pedal not
depressed (ignition switch is
ON)0 %
Communication circuit
between VDC/TCS/ABS
control unit and ECM
Depress accelerator pedal
(ignition switch is ON)0 to 100 %
ENGINE SPEED With engine runningWith engine stopped 0 rpm
EC section
Engine runningAlmost in accor-
dance with
tachometer display
STR ANGLE SIGSteering angle
detected by steering
angle sensorStraight-ahead Approx. 0 degBRC-42, "
Inspection 5:
Steering Angle Sensor
System"Steering wheel turned –756 to 756 deg
YAW RATE SENYaw rate detected by
yaw rate sensorVehicle stopped Approx. 0 d/sBRC-44, "
Inspection 6:
Yaw Rate/Side G-Sen-
sor (2WD model), Yaw
Rate/Side/Decel G-sen-
sor (AWD models) Sys-
tem"
Vehicle running –100 to 100 d/s
SIDE G-SENSORTransverse G detected
by side G-sensorVehicle stopped
Approx. 0 m/s
2BRC-44, "Inspection 6:
Yaw Rate/Side G-Sen-
sor (2WD model), Yaw
Rate/Side/Decel G-sen-
sor (AWD models) Sys-
tem"
Vehicle running
–16.7 to 16.7 m/s2
PRESS SENSORBrake fluid pressure
detected by pressure
sensorWith ignition switch turned ON
and brake pedal releasedApprox. 0 bar
BRC-40, "
Inspection 4:
Pressure Sensor Sys-
tem"With ignition switch turned ON
and brake pedal depressed0 to 170 bar
BATTERY VOLTBattery voltage sup-
plied to ABS actuator
and electric unit (con-
trol unit)Ignition switch ON 10 to 16 VBRC-48, "
Inspection 9:
ABS Actuator and Elec-
tric Unit (Control Unit)
Power Supply and
Ground System"
STOP LAMP SW Brake pedal operationBrake pedal depressed ONBRC-50, "
Inspection 10:
Stop Lamp Switch Sys-
tem"Brake pedal not depressed OFF

BRC-28
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Display Item List
Self-diagnostic item Malfunction detecting condition Check system
FR LH SENSOR- 1
[C1104]Circuit of front LH wheel sensor is open, shorted or sensor power
voltage is unusual.
BRC-37, "
Inspection 1:
Wheel Sensor System"
(Note 1) RR RH SENSOR- 1
[C1101]Circuit of rear RH wheel sensor is open, shorted or sensor power
voltage is unusual.
FR RH SENSOR- 1
[C1103]Circuit of front RH wheel sensor is open, shorted or sensor power
voltage is unusual.
RR LH SENSOR- 1
[C1102]Circuit of rear LH wheel sensor is open, shorted or sensor power
voltage is unusual.
FR LH SENSOR- 2
[C1108]ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.
RR RH SENSOR- 2
[C1105]ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.
FR RH SENSOR- 2
[C1107]ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.
RR LH SENSOR- 2
[C1106]ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.
STOP LAMP SW
[C1116]Stop lamp switch circuit is open or shorted.BRC-50, "
Inspection 10:
Stop Lamp Switch Sys-
tem"
PRESS SEN CIRCUIT
[C1142]Pressure sensor signal line is open or shorted, or sensor power
voltage is unusual, or pressure sensor is malfunctioning.BRC-40, "Inspection 4:
Pressure Sensor Sys-
tem"
ST ANG SEN CIRCUIT
[C1143]Neutral position of steering angle sensor is dislocated, or steer-
ing angle sensor is malfunctioning.BRC-42, "Inspection 5:
Steering Angle Sensor
System"
YAW RATE SENSOR
[C1145]Yaw rate sensor has generated an error, or yaw rate sensor sig-
nal line is open or shorted.BRC-44, "
Inspection 6:
Yaw Rate/Side G-Sensor
(2WD model), Yaw Rate/
Side/Decel G-sensor
(AWD models) System"

TROUBLE DIAGNOSIS
BRC-29
[VDC/TCS/ABS]
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BRC
Revision: 2004 November 2004 FX35/FX45
FR LH IN ABS SOL
[C1120]Circuit of front LH IN ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
BRC-46, "
Inspection 7:
Solenoid and VDC
Change-Over Valve Sys-
tem"
FR LH OUT ABS SOL
[C1121]Circuit of front LH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.
RR RH IN ABS SOL
[C1126]Circuit of rear RH IN ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
RR RH OUT ABS SOL
[C1127]Circuit of rear RH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.
FR RH IN ABS SOL
[C1122]Circuit of front RH IN ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
FR RH OUT ABS SOL
[C1123]Circuit of front RH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.
RR LH IN ABS SOL
[C1124]Circuit of rear LH IN ABS solenoid is open or shorted, or control
line is open or shorted to power supply or ground.
RR LH OUT ABS SOL
[C1125] Circuit of rear LH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.
CV1
[C1164]Primary side VDC switch-over solenoid valve 1 (cut valve 1) is
open or shorted, or control line is open or shorted to power sup-
ply or ground.
CV2
[C1165]Secondary side VDC switch-over solenoid valve 2 (cut valve 2) is
open or shorted, or control line is open or shorted to power sup-
ply or ground.
SV1
[C1166]Primary side VDC switch-over solenoid valve 1 (suction valve 1)
is open or shorted, or control line is open or shorted to power
supply or ground.
SV2
[C1167]Secondary side VDC switch-over solenoid valve 2 (suction valve
2) is open or shorted, or control line is open or shorted to power
supply or ground.
PUMP MOTOR (Note 3)
[ C 1111 ]During actuator motor operation with ON, when actuator motor
turns OFF or when control line for actuator motor relay is open.
BRC-47, "
Inspection 8:
Actuator Motor System"During actuator motor operation with OFF, when actuator motor
turns ON or when control line for relay is shorted to ground.
ABS SENSOR
[ABNORMAL SIGNAL]
[C1115]Wheel sensor input is malfunction.BRC-37, "
Inspection 1:
Wheel Sensor System"
(Note 1)
BATTERY VOLTAGE
[ABNORMAL]
[C1109]ABS actuator and electric unit (control unit) power voltage is too
low.BRC-48, "
Inspection 9:
ABS Actuator and Elec-
tric Unit (Control Unit)
Power Supply and
Ground System"
ST ANG SEN SIGNAL
[C1144]Neutral position correction of steering angle sensor is not fin-
ished.BRC-42, "Inspection 5:
Steering Angle Sensor
System"ST ANG SEN COM CIR
[C1156]CAN communication line or steering angle sensor has generated
an error.
SIDE G-SEN CIRCUIT
[C1146]Side G-sensor is malfunctioning, or signal line of side G-sensor is
open or shorted.BRC-44, "
Inspection 6:
Yaw Rate/Side G-Sensor
(2WD model), Yaw Rate/
Side/Decel G-sensor
(AWD models) System"
CONTROLLER FAILURE
[C1110]Internal malfunction of ABS actuator and electric unit (control
unit)BRC-40, "Inspection 3:
VDC/TCS/ABS Control
Unit System"
Self-diagnostic item Malfunction detecting condition Check system

TROUBLE DIAGNOSIS
BRC-39
[VDC/TCS/ABS]
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BRC
Revision: 2004 November 2004 FX35/FX45
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E46 (FR-LH), E33 (FR-RH) or B69 (RR) and
ABS actuator and electric unit (control unit) connector.
2. Check continuity between terminals. (Also check the continuity
when steering wheel is turned right and left and when sensor
harness inside wheel well is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR
1. Replace wheel sensor that resulted in malfunction by self-diagnosis.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then
perform self-diagnosis.
Is above displayed on self-diagnosis display?
OK >> Wheel sensor has malfunction.
NG >>

Replace ABS actuator and electric unit (control unit).

Perform to self-diagnosis again, and make sure that the result shows “NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED”.
Inspection 2: Engine SystemAFS001SU
DTC C1130-C1133, C1136
SFIA1186E
Power system Signal system Ground system
WheelABS actuator
and electric unit
(control unit)
harness con-
nector E56Wheel sensor
harness con-
nector E46,
E33 or B69ABS actuator
and electric unit
(control unit)
harness con-
nector E56Wheel sensor
harness con-
nector E46,
E33 or B69ABS actuator and
electric unit (con-
trol unit) harness
connector E56
(signal)ABS actuator
and electric unit
(control unit)
harness con-
nector E56
(ground)
Front RH (E33) 34 (W) 1 (W) 33 (B) 2 (B) 33 (B), 34 (W)
16 (B), 47 (B) Front LH (E46) 45 (R) 1 (R) 46 (G) 2 (G) 45 (R), 46 (G)
Rear RH (B69) 43 (Y) 1 (Y) 42 (BR) 2 (BR) 43 (Y), 42 (BR)
Rear LH (B69) 36 (L) 3 (L) 37 (P) 4 (P) 36 (L), 37 (P)
Power system : Continuity should exist.
Signal system : Continuity should exist.
Ground system : Continuity should not exist.

EC-12Revision: 2004 November 2004 FX35/FX451095
On Board Diagnosis Logic ...................................1095
DTC Confirmation Procedure ..............................1095
Wiring Diagram ....................................................1096
Diagnostic Procedure ..........................................1099
Component Inspection .........................................11 0 2
Removal and Installation .....................................11 0 2
DTC P1143, P1163 HO2S1 ....................................110 3
Component Description .......................................11 0 3
CONSULT-II Reference Value in Data Monitor Mode
11 0 3
On Board Diagnosis Logic ...................................11 0 3
DTC Confirmation Procedure ..............................11 0 4
Overall Function Check .......................................11 0 5
Diagnostic Procedure ..........................................11 0 5
Component Inspection .........................................11 0 7
Removal and Installation .....................................11 0 8
DTC P1144, P1164 HO2S1 ....................................110 9
Component Description .......................................11 0 9
CONSULT-II Reference Value in Data Monitor Mode
11 0 9
On Board Diagnosis Logic ...................................11 0 9
DTC Confirmation Procedure ..............................111 0
Overall Function Check .......................................1111
Diagnostic Procedure ..........................................1111
Component Inspection .........................................111 3
Removal and Installation .....................................111 5
DTC P1146, P1166 HO2S2 ....................................111 6
Component Description .......................................111 6
CONSULT-II Reference Value in Data Monitor Mode
111 6
On Board Diagnosis Logic ...................................111 6
DTC Confirmation Procedure ..............................111 7
Overall Function Check .......................................111 7
Wiring Diagram ....................................................111 9
Diagnostic Procedure ..........................................11 2 2
Component Inspection .........................................11 2 5
Removal and Installation .....................................11 2 6
DTC P1147, P1167 HO2S2 ....................................112 7
Component Description .......................................11 2 7
CONSULT-II Reference Value in Data Monitor Mode
11 2 7
On Board Diagnosis Logic ...................................11 2 7
DTC Confirmation Procedure ..............................11 2 8
Overall Function Check .......................................11 2 8
Wiring Diagram ....................................................11 3 0
Diagnostic Procedure ..........................................11 3 3
Component Inspection .........................................11 3 6
Removal and Installation .....................................11 3 7
DTC P1148, P1168 CLOSED LOOP CONTROL ...113 8
On Board Diagnosis Logic ...................................11 3 8
DTC Confirmation Procedure ..............................11 3 8
Overall Function Check .......................................11 3 9
Diagnostic Procedure ..........................................11 3 9
DTC P1211 TCS CONTROL UNIT .........................114 0
Description ...........................................................11 4 0
On Board Diagnosis Logic ...................................11 4 0
DTC Confirmation Procedure ..............................11 4 0
Diagnostic Procedure ..........................................11 4 0DTC P1212 TCS COMMUNICATION LINE ............11 41
Description ...........................................................11 4 1
On Board Diagnosis Logic ...................................11 4 1
DTC Confirmation Procedure ...............................11 4 1
Diagnostic Procedure ...........................................11 4 1
DTC P1217 ENGINE OVER TEMPERATURE .......11 42
Description ...........................................................11 4 2
CONSULT-II Reference Value in Data Monitor Mode
11 4 3
On Board Diagnosis Logic ...................................11 4 3
Overall Function Check ........................................11 4 3
Wiring Diagram ....................................................11 4 5
Diagnostic Procedure ...........................................11 4 7
Main 12 Causes of Overheating ..........................11 5 0
Component Inspection .........................................11 5 1
DTC P1225 TP SENSOR .......................................11 52
Component Description .......................................11 5 2
On Board Diagnosis Logic ...................................11 5 2
DTC Confirmation Procedure ...............................11 5 2
Diagnostic Procedure ...........................................11 5 3
Removal and Installation ......................................11 5 3
DTC P1226 TP SENSOR .......................................11 54
Component Description .......................................11 5 4
On Board Diagnosis Logic ...................................11 5 4
DTC Confirmation Procedure ...............................11 5 4
Diagnostic Procedure ...........................................11 5 5
Removal and Installation ......................................11 5 5
DTC P1229 SENSOR POWER SUPPLY ...............11 56
On Board Diagnosis Logic ...................................11 5 6
DTC Confirmation Procedure ...............................11 5 6
Wiring Diagram ....................................................11 5 7
Diagnostic Procedure ...........................................11 5 8
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ..............................11 60
Description ...........................................................11 6 0
CONSULT-II Reference Value in Data Monitor Mode
11 6 0
On Board Diagnosis Logic ...................................11 6 1
DTC Confirmation Procedure ...............................11 6 1
Wiring Diagram ....................................................11 6 2
Diagnostic Procedure ...........................................11 6 4
Component Inspection .........................................11 6 7
Removal and Installation ......................................11 6 7
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .....................................................................11 68
Component Description .......................................11 6 8
CONSULT-II Reference Value in Data Monitor Mode
11 6 8
On Board Diagnosis Logic ...................................11 6 8
DTC Confirmation Procedure ...............................11 6 9
Wiring Diagram ....................................................11 7 0
Diagnostic Procedure ...........................................11 7 1
Component Inspection .........................................11 7 2
DTC P1564 ICC STEERING SWITCH ...................11 74
Component Description .......................................11 7 4
CONSULT-II Reference Value in Data Monitor Mode
11 7 4
On Board Diagnosis Logic ...................................11 7 4
DTC Confirmation Procedure ...............................11 7 4

ENGINE CONTROL SYSTEM
EC-31
[VQ35DE]
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EC
Revision: 2004 November 2004 FX35/FX45
System ChartABS006K6
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis.
*2: This sensor is not used to control the engine system under normal conditions.
*3: This input signal is sent to the ECM through CAN communication line.
*4: This output signal is sent from the ECM through CAN communication line.Input (Sensor) ECM Function Output (Actuator)

Camshaft position sensor (PHASE)

Crankshaft position sensor (POS)

Mass air flow sensor

Engine coolant temperature sensor

Heated oxygen sensor 1

Throttle position sensor

Accelerator pedal position sensor

Park/neutral position (PNP) switch

Intake air temperature sensor

Power steering pressure sensor

Ignition switch

Battery voltage

Knock sensor

Refrigerant pressure sensor

Stop lamp switch

ICC steering switch

ICC brake switch

ASCD steering switch

ASCD brake switch

Fuel level sensor*1 *3

EVAP control system pressure sensor

Fuel tank temperature sensor*1

Heated oxygen sensor 2*2

TCM (Transmission control module)*3

ABS actuator and electric unit (control unit)*3

ICC unit*3

Air conditioner switch*3

Wheel sensor*3

Electrical load signal*3
Fuel injection & mixture ratio control Fuel injector
Electronic ignition system Power transistor
Fuel pump control Fuel pump relay
ICC vehicle speed control Electric throttle control actuator
ASCD vehicle speed control Electric throttle control actuator
On board diagnostic system
MIL (On the instrument panel)*
4
Heated oxygen sensor 1 heater control Heated oxygen sensor 1 heater
Heated oxygen sensor 2 heater control Heated oxygen sensor 2 heater
EVAP canister purge flow controlEVAP canister purge volume control
solenoid valve
Air conditioning cut control
Air conditioner relay*
4
Cooling fan control
Cooling fan relay*4
ON BOARD DIAGNOSIS for EVAP system EVAP canister vent control valve