2004 INFINITI FX35 brake

ASCD BRAKE SWITCH
EC-629
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
7. CHECK ASCD BRAKE SWITCH
Refer to EC-631, "
Component Inspection"
OK or NG
OK >> GO TO 13.
NG >> Replace ASCD brake switch.
8. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT -II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector E201

10A fuse

Joint connector-2

Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
10. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
PBIB1605E
Voltage: Battery voltage
PBIB1184E
Continuity should exist.

EC-630
[VQ35DE]
ASCD BRAKE SWITCH
Revision: 2004 November 2004 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Joint connector-2

Harness for open or short between ECM and stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
12. CHECK STOP LAMP SWITCH
Refer to EC-631, "
Component Inspection"
OK or NG
OK >> GO TO 13.
NG >> Replace stop lamp switch.
13. CHECK INTERMITTENT INCIDENT
Refer to EC-135, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

ASCD BRAKE SWITCH
EC-631
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
Component InspectionABS006Z1
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1
and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
Condition Continuity
When brake pedal is fully released. Should exist.
When brake pedal is slightly depressed. Should not exist.
SEC023D
Condition Continuity
When brake pedal is fully released. Should not exist.
When brake pedal is slightly depressed. Should exist.
PBIB1185E

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-657
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
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 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 depressing 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

EC-658
[VQ35DE]
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
Revision: 2004 November 2004 FX35/FX45
RESUME OPERATION
When the ACCEL/RESUME switch is pressed after cancel operation other than depressing ON/OFF(MAIN)
switch is performed, vehicle speed will return to last set speed. To resume vehicle set speed, vehicle condition
must meet following conditions.

Brake pedal is released

Selector lever is in other than P and N positions

Vehicle speed is greater than 40 km/h (25 MPH) and less than 144 km/h (89 MPH)

AUTOMATIC SPEED CONTROL DEVICE (ASCD)
EC-659
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
Component DescriptionABS006ZH
ASCD STEERING SWITCH
Refer to EC-515 .
ASCD BRAKE SWITCH
Refer to EC-532 , and EC-624 .
STOP LAMP SWITCH
Refer to EC-532 , EC-550 and EC-624 .
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EC-415 , EC-417 , EC-423 and EC-428 .
ASCD INDICATOR
Refer to EC-632 .

EC-662
[VK45DE]
INDEX FOR DTC
Revision: 2004 November 2004 FX35/FX45
[VK45DE]INDEX FOR DTCPFP:00024
Alphabetical IndexABS00BYV
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-792, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
×:Applicable —: Not applicable
Items
(CONSULT-II screen terms)DTC*
1
TripMIL lighting
upReference page
CONSULT-II
GST*
2ECM*3
A/T INTERLOCK P1730 1730 1×AT-147
A/T TCC S/V FNCTN P0744 0744 2×AT-125
ACC COMMAND VALUE*7P1568 1568 1×EC-1188
APP SEN 1/CIRC P2122 2122 1×EC-1225
APP SEN 1/CIRC P2123 2123 1×EC-1225
APP SEN 2/CIRC P2127 2127 1×EC-1232
APP SEN 2/CIRC P2128 2128 1×EC-1232
APP SENSOR P2138 2138 1×EC-1246
ASCD BRAKE SW*7 *8P1572 1572 1 —EC-1189,
EC-1199
ASCD SW*7 *8P1564 1564 1 —EC-1174,
EC-1181
ASCD VHL SPD SEN*7 *8P1574 1574 1 —EC-1207,
EC-1209
ATF TEMP SEN/CIRC P0710 0710 2×AT-139
BRAKE SW/CIRCUIT P1805 1805 2 —EC-1220
CAN COMM CIRCUIT U1000
1000*51× or —EC-792
CAN COMM CIRCUIT U1001
1001*52—EC-792
CKP SEN/CIRCUIT P0335 0335 2×EC-960
CLOSED LOOP-B1 P1148 1148 1×EC-1138
CLOSED LOOP-B2 P1168 1168 1×EC-1138
CMP SEN/CIRC-B1 P0340 0340 2×EC-966
CTP LEARNING P1225 1225 2 —EC-1152
CTP LEARNING P1226 1226 2 —EC-1154
CYL 1 MISFIRE P0301 0301 2×EC-949
CYL 2 MISFIRE P0302 0302 2×EC-949
CYL 3 MISFIRE P0303 0303 2×EC-949
CYL 4 MISFIRE P0304 0304 2×EC-949
CYL 5 MISFIRE P0305 0305 2×EC-949
CYL 6 MISFIRE P0306 0306 2×EC-949
CYL 7 MISFIRE P0307 0307 2×EC-949
CYL 8 MISFIRE P0308 0308 2×EC-949
D/C SOLENOID/CIRC P1762 1762 1×AT-160
D/C SOLENOID FNCTN P1764 1764 1×AT-162
ECM P0605 0605 1 or 2× or —EC-1057
ECM BACK UP/CIRCUIT P1065 1065 2×EC-1060
ECT SEN/CIRCUIT P0117 0117 1×EC-842

EC-668
[VK45DE]
INDEX FOR DTC
Revision: 2004 November 2004 FX35/FX45
P0705 0705 PNP SW/CIRC 2×AT- 11 2
P0710 0710 ATF TEMP SEN/CIRC 2×AT-139
P0720 0720
VEH SPD SEN/CIR AT*62×AT- 11 6
P0740 0740 TCC SOLENOID/CIRC 2×AT-123
P0744 0744 A/T TCC S/V FNCTN 2×AT-125
P0745 0745 L/PRESS SOL/CIRC 2×AT-127
P1065 1065 ECM BACK UP/CIRCUIT 2×EC-1060
P1102 1102 MAF SENSOR 1×EC-1064
P 1111 1111 I N T / V T I M V / C I R - B 1 2×EC-1070
P1121 1121 ETC ACTR 1×EC-1077
P1122 1122 ETC FUNCTION/CIRC 1×EC-1079
P1124 1124 ETC MOT PWR 1×EC-1085
P1126 1126 ETC MOT PWR 1×EC-1085
P1128 1128 ETC MOT 1×EC-1090
P1136 1136 INT/V TIM V/CIR-B2 2×EC-1070
P1140 1140 INTK TIM S/CIRC-B1 2×EC-1095
P1143 1143 HO2S1 (B1) 2×EC-1103
P1144 1144 HO2S1 (B1) 2×EC-1109
P1145 1145 INTK TIM S/CIRC-B2 2×EC-1095
P1146 1146 HO2S2 (B1) 2×E C - 111 6
P1147 1147 HO2S2 (B1) 2×EC-1127
P1148 1148 CLOSED LOOP-B1 1×EC-1138
P1163 1163 HO2S1 (B2) 2×EC-1103
P1164 1164 HO2S1 (B2) 2×EC-1109
P1166 1166 HO2S2 (B2) 2×E C - 111 6
P1167 1167 HO2S2 (B2) 2×EC-1127
P1168 1168 CLOSED LOOP-B2 1×EC-1138
P1211 1211 TCS C/U FUNCTN 2 —EC-1140
P1212 1212 TCS/CIRC 2 —EC-1141
P1217 1217 ENG OVER TEMP 1×EC-1142
P1225 1225 CTP LEARNING 2 —EC-1152
P1226 1226 CTP LEARNING 2 —EC-1154
P1229 1229 SENSOR POWER/CIRC 1×EC-1156
P1444 1444 PURG VOLUME CONT/V 2×EC-1160
P1446 1446 VENT CONTROL VALVE 2×EC-1168
P1564 1564
ASCD SW*7 *81—EC-1174,
EC-1181
P1568 1568
ACC COMMAND VALUE*71—EC-1188
P1572 1572
ASCD BRAKE SW*7 *81—EC-1189,
EC-1199
P1574 1574
ASCD VHL SPD SEN*7 *81—EC-1207,
EC-1209
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 —EC-717
DTC*1
Items
(CONSULT-II screen terms)TripMIL lighting
upReference page
CONSULT-II
GST*
2ECM*3