2005 INFINITI FX35 brake sensor

EC-36
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2005 July 2005 FX
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionABS006ZG
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 depressing 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 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 SET/COAST switch. (Then SET indicator in combination meter illuminates.)
ACCEL OPERATION
If the RESUME/ACCELERATE 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 depressing SET/COAST switch or RESUME/
ACCELERATE switch.

Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If 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 SET/COAST 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 control Electric throttle control
actuator
Stop lamp switch Brake pedal operation
ASCD steering switch ASCD steering switch operation
Park/Neutral position (PNP)
switch Gear position
Unified meter and A/C amp.* Vehicle speed
TCM* Powertrain revolution

ON BOARD DIAGNOSTIC (OBD) SYSTEM EC-57
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Revision: 2005 July 2005 FXA/F SEN1 HTR (B2) P1051 1051××2×EC-405
A/F SEN1 HTR (B2) P1052 1052 ××2×EC-405
ECM BACK UP/CIRC P1065 1065 — — 2 ×EC-413
I N T / V T I M V / C I R - B 1 P 1111 1111 — — 2 ×EC-417
ETC ACTR P1121 1121 — — 1 ×EC-424
ETC FUNCTION/CIRC P1122 1122 — — 1 ×EC-426
ETC MOT PWR P1124 1124 — — 1 ×EC-432
ETC MOT PWR P1126 1126 — — 1 ×EC-432
E T C M O T P 11 2 8 11 2 8 — — 1 ×EC-437
INT/V TIM V/CIR-B2 P1136 1136 — — 2 ×EC-417
HO2S2 (B1) P1146 1146 ××2×EC-442
HO2S2 (B1) P1147 1147 ××2×EC-453
CLOSED LOOP-B1 P1148 1148 — — 1 ×EC-464
HO2S2 (B2) P1166 1166 ××2×EC-442
HO2S2 (B2) P1167 1167 ××2×EC-453
CLOSED LOOP-B2 P1168 1168 — — 1 ×EC-464
TCS C/U FUNCTN P1211 1211 — — 2 — EC-465
TCS/CIRC P1212 1212 — — 2 —EC-466
ENG OVER TEMP P1217 1217 — — 1×EC-467
CTP LEARNING P1225 1225 — — 2 — EC-479
CTP LEARNING P1226 1226 — — 2 —EC-481
SENSOR POWER/CIRC P1229 1229 — — 1×EC-483
A/F SENSOR1 (B1) P1271 1271 — ×2 ×EC-488
A/F SENSOR1 (B1) P1272 1272 — ×2 ×EC-497
A/F SENSOR1 (B1) P1273 1273 — ×2 ×EC-506
A/F SENSOR1 (B1) P1274 1274 — ×2 ×EC-516
A/F SENSOR1 (B1) P1276 1276 — ×2 ×EC-526
A/F SENSOR1 (B1) P1278 1278 ××2×EC-536
A/F SENSOR1 (B1) P1279 1279 ××2×EC-548
A/F SENSOR1 (B2) P1281 1281 — ×2 ×EC-488
A/F SENSOR1 (B2) P1282 1282 — ×2 ×EC-497
A/F SENSOR1 (B2) P1283 1283 — ×2 ×EC-506
A/F SENSOR1 (B2) P1284 1284 — ×2 ×EC-516
A/F SENSOR1 (B2) P1286 1286 — ×2 ×EC-526
A/F SENSOR1 (B2) P1288 1288 ××2×EC-536
A/F SENSOR1 (B2) P1289 1289 ××2×EC-548
PURG VOLUME CONT/V P1444 1444 — — 2 ×EC-560
VENT CONTROL VALVE P1446 1446 — — 2 ×EC-568
ASCD SW*7P1564 1564 — — 1 — EC-581,
EC-574
ICC COMMAND VALUE*8P1568 1568 — — 1 — EC-587
ASCD BRAKE SW*7P1572 1572 — — 1 — EC-597,
EC-588
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Test limit
(GST only) Trip
Reference
page
CONSULT-II
GST*
2ECM*3

EC-58
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2005 July 2005 FX
*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), this number is controlled by NISSAN.
*4: SRT code will not be set if the self-diagnostic result is NG.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
*7: For models with ICC or ASCD system.
*8: For models with ICC system.
*9: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-63, "
How to Display SRT Status" .
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-68, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
ASCD VHL SPD SEN*7P1574 1574 — — 1 — EC-607,
EC-605
NATS MALFUNCTION P1610 -
P1615 1610 - 1615 — — 2 —
EC-53
TPV SEN/CIRC A/T P1705 1705 — — 1 ×AT-133
P-N POS SW/CIRCUIT P1706 1706 — — 2 ×EC-609
TURBINE REV S/CIRC P1716 1716 — — 2 ×AT-141
A/T INTERLOCK P1730 1730 — — 1 ×AT-145
I/C SOLENOID/CIRC P1752 1752 — — 1 ×AT-150
I/C SOLENOID FNCTN P1754 1754 — — 1 ×AT-152
FR/B SOLENOID/CIRC P1757 1757 — — 1 ×AT-154
FR/B SOLENOID FNCT P1759 1759 — — 1 ×AT-156
D/C SOLENOID/CIRC P1762 1762 — — 1 ×AT-158
D/C SOLENOID FNCTN P1764 1764 — — 1 ×AT-160
HLR/C SOL/CIRC P1767 1767 — — 1 ×AT-162
HLR/C SOL FNCTN P1769 1769 — — 1 ×AT-164
LC/B SOLENOID/CIRC P1772 1772 — — 1 ×AT-166
LC/B SOLENOID FNCT P1774 1774 — — 1 ×AT-168
BRAKE SW/CIRCUIT P1805 1805 — — 2 — EC-614
APP SEN 1/CIRC P2122 2122 — — 1×EC-619
APP SEN 1/CIRC P2123 2123 — — 1 ×EC-619
APP SEN 2/CIRC P2127 2127 — — 1 ×EC-626
APP SEN 2/CIRC P2128 2128 — — 1 ×EC-626
TP SENSOR P2135 2135 — — 1 ×EC-633
APP SENSOR P2138 2138 — — 1 ×EC-640
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Test limit
(GST only) Trip
Reference
page
CONSULT-II
GST*
2ECM*3

EC-92
[VQ35DE]
BASIC SERVICE PROCEDURE
Revision: 2005 July 2005 FX
19. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position with “OD” OFF. NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect CONSULT-II to the vehicle.
7. Make sure that no (1st trip) DTC is displayed in “SELF-DIAG RESULTS” mode.
OK or NG
OK >> INSPECTION END
NG >> GO TO 21.
20. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With GST
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position with “OD” OFF. NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect GST to the vehicle.
7. Make sure that no (1st trip) DTC is displayed.
OK or NG
OK >> INSPECTION END
NG >> GO TO 21.

BASIC SERVICE PROCEDURE EC-95
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Revision: 2005 July 2005 FX
29. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With CONSULT-II
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position with “OD” OFF. NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect CONSULT-II to the vehicle.
7. Make sure that no (1st trip) DTC is displayed in “SELF-DIAG RESULTS” mode.
OK or NG
OK >> GO TO 4.
NG >> GO TO 31.
30. CHECK AIR FUEL RATIO (A/F) SENSOR 1 FUNCTION
With GST
1. Turn ignition switch OFF and wait at a least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in D position with “OD” OFF. NOTE:
Keep the accelerator pedal as steady as possible during the cruising.
4. Then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH). NOTE:
Never apply brake during releasing the accelerator pedal.
5. Repeat steps 3 to 4 for 5 times.
6. Stop the vehicle and connect GST to the vehicle.
7. Make sure that no (1st trip) DTC is displayed.
OK or NG
OK >> GO TO 4.
NG >> GO TO 31.
31. DETECT MALFUNCTIONING PART
Check the following.

Check fuel pressure regulator, and repair or replace if necessary. Refer to EC-99, "Fuel Pressure Check" .

Check mass air flow sensor and its circuit, and repair or replace if necessary. Refer to EC-186, "DTC
P0101 MAF SENSOR" and EC-195, "DTC P0102, P0103 MAF SENSOR" .

Check injector and its circuit, and repair or replace if necessary. Refer to EC-661, "INJECTOR CIRCUIT" .

Check engine coolant temperature sensor and its circuit, and repair or replace if necessary. Refer to EC-
208, "DTC P0117, P0118 ECT SENSOR" and EC-220, "DTC P0125 ECT SENSOR" .
OK or NG
OK >> GO TO 33.
NG >> 1. Repair or replace.
2. GO TO 32.

EC-108
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
2
P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

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 P0725 P0740 P0744 P0745 P1705 P1716 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767
P1769 P1772 P1774 A/T related sensors, solenoid valves and switches

P1031 P1032 P1051 P1052 Air fuel ratio (A/F) sensor 1 heater

P1065 ECM power supply

P 1111 P 11 3 6 I n ta k e v a l v e t i m i n g c o n t r o l s o l e n o i d v a l v e

P1122 Electric throttle control function

P1124 P1126 P1128 Electric throttle control actuator

P1217 Engine over temperature (OVERHEAT)

P1271 P1272 P1273 P1274 P1276 P1278 P1279 P1281 P1282 P1283 P1284 P1286 P1288 P1289 Air fuel ratio (A/
F) sensor 1

P1805 Brake switch
3

P0011 P0021 Intake valve timing control

P0171 P0172 P0174 P0175 Fuel injection system function

P0300 - P0306 Misfire

P0420 P0430 Three way catalyst function

P0442 P0455 P0456 EVAP control system

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 valve

P1572 ICC brake switch/ASCD brake switch

P1574 ICC vehicle speed sensor/ASCD vehicle speed sensor
Priority Detected items (DTC)

TROUBLE DIAGNOSIS EC-131
[VQ35DE]
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Revision: 2005 July 2005 FX101 P/L Stop lamp switch [Ignition switch: OFF]
Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14V)
102 LG/B PNP switch [Ignition switch: ON]

Selector lever: P or N
Approximately 0V
[Ignition switch: ON]

Except above position BATTERY VOLTAGE
(11 - 14V)
104 L/OR Throttle control motor relay [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON] 0 - 1.0V
106 R/B Accelerator pedal position
sensor 1 [Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released
0.5 - 1.0V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed 3.9 - 4.7V
107 PU/W Fuel tank temperature sen-
sor [Engine is running] Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
108 SB ICC brake switch
(models with ICC system)
ASCD brake switch
(models with ASCD system) [Ignition switch: ON]

Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]

Brake pedal: Fully released BATTERY VOLTAGE
(11 - 14V)
109 W/L Ignition switch [Ignition switch: OFF]
0V
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
111 W / B ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]

For a few seconds after turning ignition
switch OFF 0 - 1.5V
[Ignition switch: OFF]

More than a few seconds after turning igni-
tion switch OFF BATTERY 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 ON BATTERY VOLTAGE
(11 - 14V)
11 5
11 6 B/R
B/W ECM ground [Engine is running]

Idle speed Body ground
11 7 R / Y EVAP canister vent control
valve [Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
11 9
120 R
R Power supply for ECM
[Ignition switch: ON] BATTERY VOLTAGE
(11 - 14V)
121 R/W Power supply for ECM
(Back-up) [Ignition switch: OFF]
BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)

TROUBLE DIAGNOSIS EC-133
[VQ35DE]
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Revision: 2005 July 2005 FX
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
Item DIAGNOSTIC TEST MODE
WORK SUP-
PORT SELF-DIAGNOSTIC
RESULTS DATA
MONI-
TOR DATA
MONI- TOR
(SPEC) ACTIVE
TEST DTC & SRT
CONFIRMATION
DTC*1 FREEZE
FRAME
DATA*2 SRT
STATUS DTC
WORK SUP-
PORT
ENGINE CONTROL COMPONENT PARTS
INPUT
Crankshaft position sensor (POS) ××××
Camshaft position sensor (PHASE) ××××
Mass air flow sensor ×××
Engine coolant temperature sensor ×××××
Air fuel ratio (A/F) sensor 1 ×××××
Heated oxygen sensor 2 ×××××
Vehicle speed 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 ××
Fuel level sensor ×××
ICC steering switch ×××
ASCD steering switch ×××
ICC brake switch ×××
ASCD brake switch ×××
Snow mode switch ××