brake system INFINITI FX35 2004 Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2004, Model line: FX35, Model: INFINITI FX35 2004Pages: 4449, PDF Size: 99.66 MB
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![INFINITI FX35 2004 Service Manual EC-678
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ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
System ChartABS00BZ5
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis](/img/42/57021/w960_57021-2018.png "INFINITI FX35 2004 Service Manual EC-678
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ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
System ChartABS00BZ5
*1: This sensor is not used to control the engine system. This is used only for the on board diagnosis")
EC-678
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ENGINE CONTROL SYSTEM
Revision: 2004 November 2004 FX35/FX45
System ChartABS00BZ5
*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)
Intake valve timing control position sensor
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
Nissan torque demand control system
Electric throttle control actuator
Fuel injector
Fuel pump control Fuel pump relay
ICC vehicle speed control
Electric throttle control actuator
ASCD vehicle speed control
On board diagnostic system
MIL (On the instrument panel)*
4
Power valve control VIAS control solenoid valve
Intake valve timing controlIntake valve timing control solenoid
valve
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
Page 2040 of 4449
![INFINITI FX35 2004 Service Manual BASIC SERVICE PROCEDURE
EC-699
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Revision: 2004 November 2004 FX35/FX45
On vehicles equipped with daytime light systems, if the parking brake is applied before the eng](/img/42/57021/w960_57021-2039.png "INFINITI FX35 2004 Service Manual BASIC SERVICE PROCEDURE
EC-699
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Revision: 2004 November 2004 FX35/FX45
On vehicles equipped with daytime light systems, if the parking brake is applied before the eng")
BASIC SERVICE PROCEDURE
EC-699
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Revision: 2004 November 2004 FX35/FX45
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is started, the headlamp will not be illuminated.
Steering wheel: Neutral (Straight-ahead position)
Vehicle speed: Stopped
Transmission: Warmed-up
For models with CONSULT-II, drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T”
system indicates less than 0.9V.
For models without CONSULT-II, drive vehicle for 10 minutes.
OPERATION PROCEDURE
With CONSULT-II
1. Perform EC-698, "Accelerator Pedal Released Position Learning" .
2. Perform EC-698, "
Throttle Valve Closed Position Learning" .
3. Start engine and warm it up to normal operating temperature.
4. Check that all items listed under the topic PREPARATION (previously mentioned) are in good order.
5. Select “IDLE AIR VOL LEARN” in “WORK SUPPORT” mode.
6. Touch “START” and wait 20 seconds.
7. Make sure that “CMPLT” is displayed on CONSULT-II screen. If
“CMPLT” is not displayed, Idle Air Volume Learning will not be
carried out successfully. In this case, find the cause of the inci-
dent by referring to the Diagnostic Procedure below.
8. Rev up the engine two or three times and make sure that idle
speed and ignition timing are within the specifications.
Without CONSULT-II
NOTE:
It is better to count the time accurately with a clock.
It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit
has a malfunction.
1. Perform EC-698, "
Accelerator Pedal Released Position Learning" .
SEF217Z
SEF454Y
ITEM SPECIFICATION
Idle speed 650 ± 50 rpm (in P or N position)
Ignition timing 12 ± 5° BTDC (in P or N position)
MBIB0238E
Page 2047 of 4449
![INFINITI FX35 2004 Service Manual EC-706
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November 2004 FX35/FX45
ISC SYSTEM P0507 0507 — —×EC-1050
PW ST P SEN/CIRC P0550 0550 — —×EC-1052
ECM P0605 0605 — —× or](/img/42/57021/w960_57021-2046.png "INFINITI FX35 2004 Service Manual EC-706
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November 2004 FX35/FX45
ISC SYSTEM P0507 0507 — —×EC-1050
PW ST P SEN/CIRC P0550 0550 — —×EC-1052
ECM P0605 0605 — —× or")
EC-706
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ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2004 November 2004 FX35/FX45
ISC SYSTEM P0507 0507 — —×EC-1050
PW ST P SEN/CIRC P0550 0550 — —×EC-1052
ECM P0605 0605 — —× or —EC-1057
PNP SW/CIRC P0705 0705 — —×AT- 11 2
ATF TEMP SEN/CIRC P0710 0710 — —×AT-139
VEH SPD SEN/CIR AT*7P0720 0720 — —×AT- 11 6
TCC SOLENOID/CIRC P0740 0740 — —×AT-123
A/T TCC S/V FNCTN P0744 0744 — —×AT-125
L/PRESS SOL/CIRC P0745 0745 — —×AT-127
ECM BACK UP/CIRC P1065 1065 — —×EC-1060
MAF SENSOR P1102 1102 — — —EC-1064
I N T / V T I M V / C I R - B 1 P 1111 1111 — —×EC-1070
ETC ACTR P1121 1121 — — —EC-1077
ETC FUNCTION/CIRC P1122 1122 — — —EC-1079
ETC MOT PWR P1124 1124 — — —EC-1085
ETC MOT PWR P1126 1126 — — —EC-1085
ETC MOT P1128 1128 — — —EC-1090
INT/V TIM V/CIR-B2 P1136 1136 — —×EC-1070
INTK TIM S/CIRC-B1 P1140 1140 — —×EC-1095
HO2S1 (B1) P1143 1143×××EC-1103
HO2S1 (B1) P1144 1144×××EC-1109
INTK TIM S/CIRC-B2 P1145 1145 — —×EC-1095
HO2S2 (B1) P1146 1146×××E C - 111 6
HO2S2 (B1) P1147 1147×××EC-1127
CLOSED LOOP-B1 P1148 1148 — — —EC-1138
HO2S1 (B2) P1163 1163×××EC-1103
HO2S1 (B2) P1164 1164×××EC-1109
HO2S2 (B2) P1166 1166×××E C - 111 6
HO2S2 (B2) P1167 1167×××EC-1127
CLOSED LOOP-B2 P1168 1168 — — —EC-1138
TCS C/U FUNCTN P1211 1211 — —×EC-1140
TCS/CIRC P1212 1212 — —×EC-1141
ENG OVER TEMP P1217 1217 — — —EC-1142
CTP LEARNING P1225 1225 — —×EC-1152
CTP LEARNING P1226 1226 — —×EC-1154
SENSOR POWER/CIRC P1229 1229 — — —EC-1156
PURG VOLUME CONT/V P1444 1444 — —×EC-1160
VENT CONTROL VALVE P1446 1446 — —×EC-1168
ASCD SW*7 *8P1564 1564 — — —EC-1174,
EC-1181
ACC COMMAND VALUE*7P1568 1568 — — —EC-1188
ASCD BRAKE SW*7 *8P1572 1572 — — —EC-1189,
EC-1199
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Te s t l i m i t
(GST only)1st trip DTCReference
page CONSULT-II
GST*
2ECM*3
Page 2048 of 4449
![INFINITI FX35 2004 Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-707
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Revision: 2004 November 2004 FX35/FX45
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012](/img/42/57021/w960_57021-2047.png "INFINITI FX35 2004 Service Manual ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-707
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Revision: 2004 November 2004 FX35/FX45
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012")
ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-707
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Revision: 2004 November 2004 FX35/FX45
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results). These numbers are controlled by NISSAN.
*4: The trouble shooting for this DTC needs CONSULT-II.
*5: SRT code will not be set it the self-diagnostic result is NG.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
*7: Models with ICC.
*8: Models with ASCD.
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-715, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
ASCD VHL SPD SEN*7 *8P1574 1574 — — —EC-1207,
EC-1209
NATS MALFUNCTIONP1610 -
P16151610 - 1615 — —×EC-717
P-N POS SW/CIRCUIT P1706 1706 — —×EC-1211
TURBINE REV S/CIRC P1716 1716 — —×AT- 1 4 3
V/SP SEN(A/T OUT) P1720 1720 — —×EC-1216
A/T INTERLOCK P1730 1730 — — —AT- 1 4 7
I/C SOLENOID/CIRC P1752 1752 — — —AT- 1 5 2
I/C SOLENOID FNCTN P1754 1754 — — —AT- 1 5 4
FR/B SOLENOID/CIRC P1757 1757 — — —AT- 1 5 6
FR/B SOLENOID/CIRC P1759 1759 — — —AT- 1 5 8
D/C SOLENOID/CIRC P1762 1762 — — —AT- 1 6 0
D/C SOLENOID FNCTN P1764 1764 — — —AT- 1 6 2
HLR/C SOL/CIRC P1767 1767 — — —AT- 1 6 4
HLR/C SOL FNCTN P1769 1769 — — —AT- 1 6 6
LC/B SOLENOID/CIRC P1772 1772 — — —AT- 1 6 8
LC/B SOLENOID FNCT P1774 1774 — — —AT- 1 7 0
SHIFT SIG FNCTN P1780 1780 — —×EC-1218
BRAKE SW/CIRCUIT P1805 1805 — —×EC-1220
APP SEN 1/CIRC P2122 2122 — — —EC-1225
APP SEN 1/CIRC P2123 2123 — — —EC-1225
APP SEN 2/CIRC P2127 2127 — — —EC-1232
APP SEN 2/CIRC P2128 2128 — — —EC-1232
TP SENSOR P2135 2135 — — —EC-1239
APP SENSOR P2138 2138 — — —EC-1246
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTest value/
Test limit
(GST only)1st trip DTCReference
page CONSULT-II
GST*
2ECM*3
Page 2072 of 4449
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EC-731
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Revision: 2004 November 2004 FX35/FX45
Fail-safe ChartABS00BZQ
When the DTC listed below is detected, the ECM enters fail-safe mode and the](/img/42/57021/w960_57021-2071.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-731
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Revision: 2004 November 2004 FX35/FX45
Fail-safe ChartABS00BZQ
When the DTC listed below is detected, the ECM enters fail-safe mode and the")
TROUBLE DIAGNOSIS
EC-731
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Revision: 2004 November 2004 FX35/FX45
Fail-safe ChartABS00BZQ
When the DTC listed below is detected, the ECM enters fail-safe mode and the MIL lights up.
2P0031P0032 P0051 P0052 Heated oxygen sensor 1 heater
P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
P0132 P0133 P0134 P0152 P0153 P0154 P1143 P1144 P1163 P1164 Heated oxygen sensor 1
P0138 P0139 P0158 P0159 P1146 P1147 P1166 P1167 Heated oxygen sensor 2
P0441 EVAP control system purge flow monitoring
P0444 P0445 P1444 EVAP canister purge volume control solenoid valve
P0447 P1446 EVAP canister vent control valve
P0451 P0452 P0453 EVAP control system pressure sensor
P0550 Power steering pressure sensor
P0710 P0720 P0740 P0744 P0745 P1716 P1720 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767 P1769
P1772 P1774 A/T related sensors, solenoid valves and switches
P1065 ECM power supply
P 1111 P 1136 Intake valve timing control solenoid valve
P1122 Electric throttle control function
P1124 P1126 P1128 Electric throttle control actuator
P1140 P1145 Intake valve timing control position sensor
P1217 Engine over temperature (OVERHEAT)
P1805 Brake switch
3
P0011 P0021 Intake valve timing control
P0171 P0172 P0174 P0175 Fuel injection system function
P0300 - P0308 Misfire
P0420 P0430 Three way catalyst function
P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)
P0455 EVAP control system (GROSS LEAK)
P0506 P0507 Idle speed control system
P1121 Electric throttle control actuator
P1148 P1168 Closed loop control
P1211 TCS control unit
P1212 TCS communication line
P1564 ICC steering switch/ASCD steering switch
P1568 ICC command value
P1572 ICC brake switch/ASCD brake switch
P1574 ICC vehicle speed sensor/ASCD vehicle speed sensor
P1780 Shift change signal Priority Detected items (DTC)
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103
P1102Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
Page 2099 of 4449
![INFINITI FX35 2004 Service Manual EC-758
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
91 GSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
94 L CAN communication line[Ignition switch: ON]App](/img/42/57021/w960_57021-2098.png "INFINITI FX35 2004 Service Manual EC-758
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
91 GSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
94 L CAN communication line[Ignition switch: ON]App")
EC-758
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
91 GSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
94 L CAN communication line[Ignition switch: ON]Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
98 B/PAccelerator pedal position
sensor 2[Ignition switch: ON]
Engine stopped
Accelerator pedal is fully released0.15 - 0.60V
[Ignition switch: ON]
Engine stopped
Accelerator pedal is fully depressed1.95 - 2.40V
99 G/YICC steering switch
(models with ICC system)[Ignition switch: ON]
ICC steering switch: OFFApproximately 4.3V
[Ignition switch: ON]
ON/OFF (MAIN) switch: PressedApproximately 0V
[Ignition switch: ON]
CANCEL switch: PressedApproximately 1.3V
[Ignition switch: ON]
DISTANCE switch: PressedApproximately 2.2V
[Ignition switch: ON]
COAST/SET switch: PressedApproximately 3V
[Ignition switch: ON]
ACCEL/RESUME switch: PressedApproximately 3.7V
99 G/YASCD steering switch
(models with ASCD system)[Ignition switch: ON]
ASCD steering switch: OFFApproximately 4V
[Ignition switch: ON]
ON/OFF (MAIN) switch: PressedApproximately 0V
[Ignition switch: ON]
CANCEL switch: PressedApproximately 1V
[Ignition switch: ON]
COAST/SET switch: PressedApproximately 2V
[Ignition switch: ON]
ACCEL/RESUME switch: PressedApproximately 3V
101 P/L Stop lamp switch[Ignition switch: OFF]
Brake pedal is fully releasedApproximately 0V
[Ignition switch: OFF]
Brake pedal is depressedBATTERY VOLTAGE
(11 - 14V)
102 LG/B PNP switch[Ignition switch: ON]
Shift lever position is P or NApproximately 0V
[Ignition switch: ON]
Except above positionBATTERY VOLTAGE
(11 - 14V)
104 L/OR Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
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![INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-759
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Revision: 2004 November 2004 FX35/FX45
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
CONSULT-II](/img/42/57021/w960_57021-2099.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-759
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Revision: 2004 November 2004 FX35/FX45
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
CONSULT-II")
TROUBLE DIAGNOSIS
EC-759
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Revision: 2004 November 2004 FX35/FX45
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
CONSULT-II FunctionABS00BZX
FUNCTION
106 R/BAccelerator pedal position
sensor 1[Ignition switch: ON]
Engine stopped
Accelerator pedal is fully released0.5 - 1.0V
[Ignition switch: ON]
Engine stopped
Accelerator pedal is fully depressed3.9 - 4.7V
107 PU/WFuel tank temperature sen-
sor[Engine is running]Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
108 SBICC brake switch (models
witch ICC system)
ASCD brake switch
(models witch ASCD sys-
tem)[Ignition switch: ON]
Brake pedal is depressedApproximately 0V
[Ignition switch: ON]
Brake pedal is fully releasedBATTERY VOLTAGE
(11 - 14V)
109 W/L Ignition switch[Ignition switch: OFF]0V
[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
111 W / BECM relay
(Self shut-off)[Engine is running]
[Ignition switch: OFF]
For a few seconds after turning ignition
switch OFF0 - 1.5V
[Ignition switch: OFF]
More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
113 GY/R Fuel pump relay[Ignition switch: ON]
For 1 second after turning ignition switch ON
[Engine is running]0 - 1.5V
[Ignition switch: ON]
More than 1 second after turning ignition
switch ONBATTERY VOLTAGE
(11 - 14V)
11 5
11 6B/R
B/WECM ground[Engine is running]
Idle speedBody ground
11 7 R / YEVAP canister vent control
valve[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
11 9
120R
RPower supply for ECM[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
121 R/WPower supply for ECM
(Back-up)[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V) TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
Diagnostic test mode Function
Work supportThis mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.
Self-diagnostic resultsSelf-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly.*
Data monitor Input/Output data in the ECM can be read.
Data monitor (SPEC)Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
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Revision: 2004 November 2004 FX35/FX45
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSE](/img/42/57021/w960_57021-2101.png "INFINITI FX35 2004 Service Manual TROUBLE DIAGNOSIS
EC-761
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Revision: 2004 November 2004 FX35/FX45
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSE")
TROUBLE DIAGNOSIS
EC-761
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Revision: 2004 November 2004 FX35/FX45
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
ItemDIAGNOSTIC TEST MODE
WORK
SUP-
PORTSELF-DIAGNOS-
TIC RESULTS
DATA
MONI-
TORDATA
MONI-
TOR
(SPEC)ACTIVE
TESTDTC & SRT
CONFIRMATION
DTC*1FREEZE
FRAME
DATA*2SRT
STATUSDTC
WORK
SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS)××××
Camshaft position sensor
(PHASE)××××
Mass air flow sensor×××
Engine coolant temperature sen-
sor×××××
Heated oxygen sensor 1×××××
Heated oxygen sensor 2×××××
Wheel sensor××××
Accelerator pedal position sensor×××
Throttle position sensor×××
Fuel tank temperature sensor××××
EVAP control system pressure
sensor×××
Intake air temperature sensor××××
Knock sensor×
Refrigerant pressure sensor××
Closed throttle position switch
(accelerator pedal position sensor
signal)××
Air conditioner switch××
Park/neutral position (PNP) switch×××
Stop lamp switch×××
Power steering pressure sensor×××
Battery voltage××
Load signal××
Snow mode switch××
Intake valve timing control position
sensor×××
Fuel level sensor×××
ICC steering switch×××
ASCD steering switch×××
ICC brake switch×××
ASCD brake switch×××
Page 2107 of 4449
![INFINITI FX35 2004 Service Manual EC-766
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
BATTERY VOLT [V]××The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]××
The accelerator pedal position sensor](/img/42/57021/w960_57021-2106.png "INFINITI FX35 2004 Service Manual EC-766
[VK45DE]
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
BATTERY VOLT [V]××The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]××
The accelerator pedal position sensor")
EC-766
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TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
BATTERY VOLT [V]××The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]××
The accelerator pedal position sensor sig-
nal voltage is displayed.ACCEL SEN 2 signal is converted be
ECM internally. Thus, they differs
from ECM terminal voltage signal. ACCEL SEN 2 [V]×
THRTL SEN 1 [V]××
The throttle position sensor signal voltage
is displayed.THRTL SEN 2 signal is converted by
ECM internally. Thus, they differs
from ECM terminal voltage signal. THRTL SEN 2 [V]×
FUEL T/TEMP SE
[°C] or [°F]×
The fuel temperature (determined by the
signal voltage of the fuel tank temperature
sensor) is displayed.
INT/A TEMP SE
[°C] or [°F]××
The intake air temperature (determined by
the signal voltage of the intake air tempera-
ture sensor) is indicated.
EVAP SYS PRES [V]×
The signal voltage of EVAP control system
pressure sensor is displayed.
FUEL LEVEL SE [V]×
The signal voltage of the fuel level sensor is
displayed.
START SIGNAL
[ON/OFF]××
Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals
of engine speed and battery voltage.After starting the engine, [OFF] is dis-
played regardless of the starter sig-
nal.
CLSD THL POS
[ON/OFF]××
Indicates idle position [ON/OFF] computed
by ECM according to the accelerator pedal
position sensor signal.
AIR COND SIG
[ON/OFF]××
Indicates [ON/OFF] condition of the air con-
ditioner switch as determined by the air
conditioner signal.
P/N POSI SW
[ON/OFF]××
Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]××
[ON/OFF] condition of the power steering
system (determined by the signal voltage of
the power steering pressure sensor signal)
is indicated.
LOAD SIGNAL
[ON/OFF]××
Indicates [ON/OFF] condition from the elec-
trical load signal.
ON: Rear window defogger switch is ON
and/or lighting switch is in 2nd position.
OFF: Both rear window defogger switch
and lighting switch are OFF.
SNOW MODE SW
[ON/OFF]
Indicates [ON/OFF] condition from the
snow mode switch signal.
IGNITION SW
[ON/OFF]×
Indicates [ON/OFF] condition from ignition
switch signal.
HEATER FAN SW
[ON/OFF]×
Indicates [ON/OFF] condition from the
heater fan switch signal.
BRAKE SW
[ON/OFF]
Indicates [ON/OFF] condition from the stop
lamp switch signal.
INJ PULSE-B1
[msec]×
Indicates the actual fuel injection pulse
width compensated by ECM according to
the input signals.When the engine is stopped, a cer-
tain computed value is indicated.
INJ PULSE-B2
[msec]Monitored item [Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSDescription Remarks
Page 2675 of 4449
![INFINITI FX35 2004 Service Manual EC-1334
[VK45DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2004 November 2004 FX35/FX45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionABS00CG0
INPUT/OUTPUT SIGNAL CHART
*: Thi](/img/42/57021/w960_57021-2674.png "INFINITI FX35 2004 Service Manual EC-1334
[VK45DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2004 November 2004 FX35/FX45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionABS00CG0
INPUT/OUTPUT SIGNAL CHART
*: Thi")
EC-1334
[VK45DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2004 November 2004 FX35/FX45
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionABS00CG0
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without pressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/h
(25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
SET OPERATION
Press ON/OFF (MAIN) switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press COAST/SET switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the ACCEL/RESUME switch is pressed during cruise control driving, increase the vehicle speed until the
switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.
CANCEL switch is pressed
More than 2 switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)
Brake pedal is depressed
Selector lever is changed to N, P, R position
Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
VDC/TCS system is operated
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.
Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing COAST/SET switch or ACCEL/
RESUME switch.
Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If ON/OFF (MAIN) switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled
and vehicle speed memory will be erased.
COAST OPERATION
When the COAST/SET switch is pressed during cruise control driving, decrease vehicle set speed until the
switch is released. And then ASCD will keep the new set speed.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switchGear position
Unified meter and A/C amp.* Vehicle speed
TCM* Powertrain revolution