brake sensor INFINITI FX35 2008 Service Manual

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ELECTRICAL
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CONTENTS
AUTO CRUISE CONTROL SYSTEM
ASCD
SERVICE INFORMATION .. ..........................
3
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ........................................................... .....
3
Description .......................................................... ......3
ICC
SERVICE INFORMATION .. ..........................
4
DTC INDEX ..................................................... .....4
DTC 11 - 65 ......................................................... ......4
DTC 74 - 109 .............................................................4
PRECAUTIONS ...................................................5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
Precaution for ICC System Service ...........................5
PREPARATION ...................................................6
Special Service Tool ........................................... ......6
DESCRIPTION ....................................................7
Outline ................................................................. ......7
Functional Diagram ...................................................7
Component Description .............................................9
CAN Communication .................................................9
Switch Operation .....................................................10
ICC System Display ................................................10
ACTION TEST ....................................................11
ICC System Running Test ................................... ....11
LASER BEAM AIMING ADJUSTMENT .............14
Outline ................................................................. ....14
Preparation ..............................................................14
Outline of Adjustment Procedure ............................14
Setting the ICC Target Board ..................................14
Aiming Adjustment ..................................................16
ELECTRICAL UNITS LOCATION ....................18
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
18
WIRING DIAGRAM ...........................................19
Schematic ................................................................19
Wiring Diagram - ICC - ............................................20
TERMINALS AND REFERENCE VALUE .........27
Terminal and Reference Value for ICC Unit ............27
Terminal and Reference Value for ICC Sensor ... ....28
TROUBLE DIAGNOSIS — GENERAL DE-
SCRIPTION .......................................................
29
Work Flow ................................................................29
CONSULT-III Function (ICC) ...................................29
Self-Diagnostic Function ..........................................32
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS .................................................
35
Diagnostic Trouble Code (DTC) Chart ....................35
DTC 11 CONTROL UNIT ........................................36
DTC 20 CAN COMM CIRCUIT ................................36
DTC 31 POWER SUPPLY CIR, DTC 34 POWER
SUPPLY CIR 2 ........................................................
37
DTC 41 VHCL SPEED SE CIRC .............................37
DTC 43 ABS/TCS/VDC CIRC .................................38
DTC 45 BRAKE SW/STOP L SW ............................38
DTC 46 OPERATION SW CIRC ......................... ....40
DTC 61 PRESS SEN CIRCUIT ...............................41
DTC 62 BOOSTER SOL/V CIRCUIT .................. ....42
DTC 63 RELEASE SW CIRCUIT ............................43
DTC 65 PRESSURE CONTRO L .............................45
DTC 74 LASER BEAM OFF CNTR ..................... ....45
DTC 90 STOP LAMP RLY FIX ................................46
DTC 92 ECM CIRCUIT ............................................50
DTC 96 NP RANGE ................................................51
DTC 97 AT CIRCUIT ...............................................52
DTC 98 GEAR POSITION .......................................52
DTC 102 RADAR STAIN .........................................53
DTC 103 LASER SENSOR FAIL .............................53
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ACS-2
DTC 104 LASER AIMING INCMP ..........................54
DTC 107 LASER COMM FAIL ...............................54
DTC 109 LASER HIGH TEMP ...............................54
TROUBLE DIAGNOSIS FOR SYMPTOMS .......55
Symptom Chart .................................................... ...55
Symptom 1 MAIN Switch Does Not Turn ON*1,
MAIN Switch Does Not Turn OFF*2 ..................... ...55
Symptom 2 ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ........................................ ...
56
Symptom 3 ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE
Switch or DISTANCE Switch ..................................
56
Symptom 4 ICC System Is Not Cancelled When
the A/T Selector Lever Is in Other Than "D" and
"M" Position ............................................................
57
Symptom 5 Chime Does Not Sound .......................57
Symptom 6 Driving Force Is Hunting ......................58
Symptom 7 ICC System Frequently Cannot De-
tect the Vehicle Ahead/ Detection Zone Is Short . ...
58
Symptom 8 the System Does Not Detect the Vehi-
cle Ahead at All .......................................................
59
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
WILL NOT RUN ......................................................
59
ELECTRICAL COMPONENT INSPECTION .....63
ICC Steering Switch ............................................. ...63
Booster Solenoid .....................................................63
Release Switch .......................................................63
ICC Brake Switch and Stop Lamp Switch ...............64
ICC Brake Hold Relay .............................................64
REMOVAL AND INSTALLATION .....................65
ICC Unit ............................................................... ...65
ICC Sensor .............................................................65
ICC Steering Switch ................................................66
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ACS-4
< SERVICE INFORMATION >[ICC]
DTC INDEX
SERVICE INFORMATION
DTC INDEX
DTC 11 - 65INFOID:0000000001544468
DTC 74 - 109INFOID:0000000001544469
DTC Items (CONSULT screen terms) Reference
11 CONTROL UNIT ACS-36, "
DTC 11 CONTROL UNIT"
20 CAN COMM CIRCUIT ACS-36, "DTC 20 CAN COMM CIRCUIT"
31 POWER SUPPLY CIR
ACS-37, "DTC 31 POWER SUPPLY CIR, DTC 34 POWER SUPPLY CIR 2"34 POWER SUPPLY CIR 2
41 VHCL SPEED SE CIRCACS-37, "
DTC 41 VHCL SPEED SE CIRC"
43 ABS/TCS/VDC CIRCACS-38, "DTC 43 ABS/TCS/VDC CIRC"
45 BRAKE SW/STOP L SWACS-38, "DTC 45 BRAKE SW/STOP L SW"
46 OPERATION SW CIRCACS-40, "DTC 46 OPERATION SW CIRC"
61 PRESS SEN SIRCUITACS-41, "DTC 61 PRESS SEN CIRCUIT"
62 BOOSTER SOL/V CIRCUITACS-42, "DTC 62 BOOSTER SOL/V CIRCUIT"
63 RELEASE SW CIRCUITACS-43, "DTC 63 RELEASE SW CIRCUIT"
65 PRESSURE CONTROLACS-45, "DTC 65 PRESSURE CONTROL"
DTC Items (CONSULT screen terms) Reference
74 LASER BEAM OFF CNTR ACS-45, "
DTC 74 LASER BEAM OFF CNTR"
90 STOP LAMP RLY FIXACS-46, "DTC 90 STOP LAMP RLY FIX"
92 ECM CIRCUITACS-50, "DTC 92 ECM CIRCUIT"
96 NP RANGEACS-51, "DTC 96 NP RANGE"
97 AT CIRCUITACS-52, "DTC 97 AT CIRCUIT"
98 GEAR POSITIONACS-52, "DTC 98 GEAR POSITION"
102 RADAR STAIN ACS-53, "DTC 102 RADAR STAIN"
103 LASER SENSOR FAILACS-53, "DTC 103 LASER SENSOR FAIL"
104 LASER AIMING INCMPACS-54, "DTC 104 LASER AIMING INCMP"
107 LASER COMM FAILACS-54, "DTC 107 LASER COMM FAIL"
109 LASER HIGH TEMPACS-54, "DTC 109 LASER HIGH TEMP"
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DESCRIPTIONACS-7
< SERVICE INFORMATION > [ICC]
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DESCRIPTION
OutlineINFOID:0000000001328805
The Intelligent Cruise Control (ICC) system automatically maintains a selected distance from the vehicle
ahead according to that vehicle's speed, or at the set speed, if the road ahead is clear.
The ICC function has two cruise control modes and brake assist (with preview function).
VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE
With vehicle-to-vehicle distance control mode, the driver can maintain the same speed as other vehicles with-
out the constant need to adjust the set speed as the driver would with a normal cruise control system.
The system is intended to enhance the operation of the vehicle when following the vehicle traveling in the
same lane and direction.
If the distance sensor detects a sl ower moving vehicle ahead, the system wil l reduce speed so that the vehicle
ahead can be followed at the selected distance.
The system automatically controls the throttle and applie s the brakes (up to 25% of vehicle braking power) if
necessary.
The detection range of the sensor is approximately 120 m (390 ft) ahead.
Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Conventional (fixed speed) cruise contro l mode is cruising at preset speeds.
Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
BRAKE ASSIST (WITH PREVIEW FUNCTION)
When the force applied to brake pedal exceeds a certain level, the Brake Assist is activated and generates a
greater braking force than that of a convent ional brake booster even with light pedal force.
When the Preview Function identifies the need to apply the sudden brake by sensing the vehicle ahead in the
same lane and the distance and relative speed from it, it applies the brake pre-pressure before driver depress
the brake pedal and improves brake re sponse by reducing its free play.
Refer to Owner's Manual for BRAKE ASSIST (W ITH PREVIEW FUNCTION) operating instructions.
Functional DiagramINFOID:0000000001328806
Items of input/output signal to be checked with CONSULT-III
PKIC8700E
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ACS-8
< SERVICE INFORMATION >[ICC]
DESCRIPTION
DATA MONITOR INPUT ITEM LIST
DATA MONITOR OUTPUT ITEM LIST
InputData monitored
Item [unit] CAN Description
ECM THRTL OPENING
[%]
×Indicates throttle angle read by ICC unit through CAN communication (ECM transmits
throttle angle through CAN communication).
ENGINE RPM
[rpm] ×
Indicates engine speed read by ICC unit through CAN communication (ECM transmits
engine speed through CAN communication).
MAIN SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
SET/COAST SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
CANCEL SW
[On/Off] ×
Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
RESUME/ACC SW
[On/Off] ×Indicates [On/Off] status as judged from steering switch signal (ECM transmits steering
switch signal through CAN communication).
IDLE SW
[On/Off] ×Indicates [On/Off] status of idle switch read by ICC unit through CAN communication
(ECM transmits ON/OFF status through CAN communication).
TCM VHCL SPD AT
[km/h] or [mph]
×Indicates vehicle speed calculated from AT vehicle speed sensor by ICC unit through
CAN communication (TCM transmits AT vehicle speed sensor signal through CAN com-
munication).
GEAR
[1, 2, 3, 4, 5] ×Indicates AT gear position read by ICC unit through CAN communication (TCM transmits
gear position through CAN communication).
D RANGE SW
[On/Off] ×
Indicates [On/Off] status of “D” position read by ICC unit through CAN communication
(TCM transmits ON/OFF condition of “D” position through CAN communication).
NP RANGE SW
[On/Off] ×Indicates PNP switch signal read by ICC unit through CAN communication (TCM trans-
mits PNP switch signal through CAN communication).
ABS actuator
and electric
unit (control
unit) VHCL SPEED SE
[km/h] or [mph]
×Indicates vehicle speed calculated from wheel sensor by ICC unit through CAN commu-
nication (ABS actuator and electr
ic unit (control unit) transmits wheel speed sensor signal
through CAN communication).
BCM WIPER SW
[Off/Low/High]
×Indicates wiper [Off/Low/High] status (BCM transmits front wiper request signal through
CAN commun
ication).
Brake pres-
sure sensor PRESS SENS
[bar]
Indicates brake fluid pressure value calculated from signal voltage of pressure sensor.
Release
switch RELEASE SW NO
[On/Off]
Indicates [On/Off] status as judged from release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
RELEASE SW NC
[On/Off] Indicates [On/Off] status as judged from release switch signal.
ON when brake is not depressed.
OFF when brake is depressed.
ICC brake
switch BRAKE SW
[On/Off]
Indicates [On/Off] status as judged from ICC brake switch signal.
Sto p l am p
switchSTOP LAMP SW
[On/Off]
Indicates [On/Off] status as judged from stop lamp switch signal.
Output Data monitored
Item [unit] CAN Description
ICC warning
chime BUZZER O/P
[On/Off]
×
Indicates [On/Off] status of ICC warning chime output.
ICC brake hold
relay STP LMP DRIVE
[On/Off]
Indicates [On/Off] status of brake hold relay drive output.
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DESCRIPTIONACS-9
< SERVICE INFORMATION > [ICC]
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ACTIVE TEST ITEM LIST
Component DescriptionINFOID:0000000001328807
CAN CommunicationINFOID:0000000001328808
CAN (Controller Area Network) is a serial communication li ne for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tric control units are equipped onto a vehicle, and eac h control unit shares information and links with other
control units during operation (not independent). In CAN 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.
CAN COMMUNICATION UNIT
Refer to LAN-43, "CAN System Specification Chart".
Output CONSULT-III ICC
[ACTIVE TEST]
Item CAN Description
Combination
meter ICC BUZZER 1
×Able to start ICC warning chime with a driving signal from ICC unit.
METER LAMP ×Able to turn ICC system display ON with a driving signal from ICC unit.
ICC brake hold
relay STOP LAMP Able to start ICC brake hold relay with a driving signal from ICC unit.
Booster sole-
noid BOOSTER SOL/V
3
Able to start booster solenoid with a driving signal from ICC unit.
ComponentVehicle-to-
vehicle
distance
control mode Conventional
(fixed speed)
cruise
control mode Brake assis
(with preview function) Description
ICC unit ××× Operates electric throttle control actuator and brake
booster based on that sensor signals and CAN commu-
nication data, then controls vehicle distance.
ICC sensor ×× Irradiates laser beam, and receives reflected laser beam
to measure distance from preceding vehicle.
ECM ××× Transmits throttle position signal and ICC steering switch
signal to ICC unit through CAN communication.
ABS actuator and electric
unit (control unit) ××× Transmits wheel speed sensor signal to ICC unit through
CAN communication.
Brake pressure sensor ×× Detects fluid pressure in master cylinder.
Brake booster ×× Adjusts brake fluid pressure, based on command from
ICC unit.
BCM × Transmit front wiper request signal to ICC unit through
CAN communication.
TCM ×× Transmits gear position signal and output shaft revolu-
tion signal to ICC unit through CAN communication.
Unified meter and A/C amp. ××× Receives ICC system display signal, ICC warning lamp
signal and buzzer output signal from ICC unit through
CAN communication.
ICC brake switch, stop lamp
switch ××× Transmit operating signal to ICC unit when touching
brake pedal. ICC unit cancels cruise system at driver's
brake operation.
ICC brake hold relay × Receives stop lamp driving signal from ICC unit, and
turns stop lamp ON.
Parking brake switch ×× The cruise system is cancelled when applied.
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ACS-14
< SERVICE INFORMATION >[ICC]
LASER BEAM AIMING ADJUSTMENT
LASER BEAM AIMING ADJUSTMENT
OutlineINFOID:0000000001328812
Adjust the laser beam aiming every time the ICC sensor is removed or installed.
CAUTION:
 Adjust laser beam aiming at a horizontal place as
far as 12 m (39 ft) forward the vehicle can be seen.
 Adjust laser beam aiming 5 seconds after starting engine.
 Never view ICC sensor integrated un it body window directly during laser beam aiming adjustment.
 Follow the CONSULT-III when adju sting the laser beam aiming (laser beam aiming adjustment can-
not be operated without CONSULT-III).
 Never ride on vehicle during l aser beam aiming adjustment.
 Idle and turn headlamps OFF duri ng laser beam aiming adjustment.
PreparationINFOID:0000000001328813
 Adjust the tire pressure to the specified value.
 See that there is no load in the vehicle.
 Coolant, engine oil filled up to correct level and full fuel tank.
 Shift the gear into “P” position and release the parking brake.
 Clean the ICC sensor with a soft cloth.
Outline of Adjustment ProcedureINFOID:0000000001328814
1. Set up the ICC target board [KV99110100 (J-45718)].
2. Adjust the sensor following the procedure on CONSUL T-III. (Turn manually the screw for up-down position
adjustment. ICC sensor automatically adjust the right-left position.)
Setting the ICC Target BoardINFOID:0000000001328815
Accurate ICC target board setting is required for the laser beam aiming adjustment.
CAUTION:
ICC system does not function normally if laser beam aiming is not accurate.
ADJUSTING HEIGHT OF THE TARGET
1. Attach a triangle scale at the center.
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TERMINALS AND REFERENCE VALUEACS-27
< SERVICE INFORMATION > [ICC]
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TERMINALS AND REFERENCE VALUE
Terminal and Reference Value for ICC UnitINFOID:0000000001328820
Te r m i n a l s
(Wire color) Item Condition
Voltage (V)
+– Ignition
switch Operation
1 (R/W)
2 (R/W)
GroundBattery power supply OFF — Battery voltage
5 (P) CAN-L — — —
6 (GY/L) Release switch power supply ON — Approx. 10
7 (GY/R) NEUT-SW ON Selector lever in “N” or “P” posi-
tions
Approx. 12
Selector lever in other positions Approx. 0
8 (G) 24 (R) Brake pressure sensor power
supply ON — Approx. 5
10 (B/R)
GroundBrake booster solenoid
(+) side
ON — Approx. 12
12 (L/W) Brake booster solenoid
(–) side ONSolenoid operating
Solenoid not operating Approx. 12
14 (L) CAN-H — — —
15 (LG/B) Brake release switch
(normal closed)
ONDepress the brake pedal Approx. 0
Release the brake pedal Approx. 10
17 (BR) 24 (R) Brake pressure sensor signal ON Release the brake pedal Approx. 0.5
Depress the brake pedal
Approx. 0.5 - 3
(Note) Voltage becomes higher
depending on effectiveness of depressing brakes.
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ACS-28
< SERVICE INFORMATION >[ICC]
TERMINALS AND REFERENCE VALUE
Terminal and Reference Value for ICC Sensor
INFOID:0000000001328821
19 (B)
20 (B)
46 (B) GroundGround ON — Approx. 0
22 (G/Y) Brake release switch
(normally open) ONDepress the brake pedal Approx. 10
Release the brake pedal Approx. 0
24 (R) Brake pressure sensor signal
ground
—— Approx. 0
29 (SB) ICC brake switch
(normal closed) ONSelector
lever: Not
in “N” or
“P” posi-
tion Depress the brake
pedal
Approx. 0
Release the brake
pedal Approx. 12
30 (Y) DDL-TX — — —
33 (W)
42 (W) Ignition switch ON or START ON — Battery voltage
38 (P/B) Stop lamp switch
(normally open) ONDepress the brake pedal Approx. 12
Release the brake pedal Approx. 0
39
(G/OR) DDL-RX — — —
40
(PU/W)
GroundParking brake signal ON
Depress the parking brake Approx. 0
Release the parking brake Approx. 12
47 (W/R) Stop lamp drive output signal ON Brake operating with ICC sys-
tem
Approx. 12
Brake not operating with ICC
system Approx. 0
Te r m i n a l s
(Wire color) Item Condition
Voltage (V)
+– Ignition
switch Operation
Te r m i n a l s
(Wire color) Item Condition
Voltage (V)
+– Ignition
switch Operation
1 (Y)
Ground ICC sensor power supply ON — Battery voltage
3 (L) CAN-H — — —
4 (B) Ground — — Approx. 0
6 (R) CAN-L — — —
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ACS-30
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS —
GENERAL DESCRIPTION
WORK SUPPORT
Cause of Auto-Cancel
Display Item List
NOTE:
Last five cancel (system cancel) causes are displayed.
SELF DIAGNOSTIC RESULT
For details, refer to ACS-35, "Diagnostic Trouble Code (DTC) Chart".
DATA MONITOR
×: Applicable
Work Support  Monitors aiming direction to facilitate laser beam aiming operation.
 Indicates causes of automatic cancellation of the ICC system.
Ecu Identification Displays part number of ICC unit. Test mode Function
Operation Function
CAUSE OF AUTO-CANCEL Indicates causes of automatic cancellation of the ICC system.
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction.
For details, refer to
ACS-14
.
Cause of cancellation Description
OPERATING WIPER Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ABS func tion was operated.
OPERATING TCS TCS function was operated.
OPERATING VDC VDC function was operated.
OPE SW VOLT CIRC Outside the standard control switch input voltage was detected.
ECM CIRCUIT ECM did not permit ICC operation.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP Temperature around ICC sensor became low.
OP SW DOUBLE TOUCH ICC steering switches were pressed at the same time.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
VDC/TCS OFF SW VDC OFF switch was pressed.
WHEEL SPD UNMATCH Wheel speed became different from AT vehicle speed.
TIRE SLIP Wheel slipped.
PKB SW ON Parking brake is applied.
IGN LOW VOLT Power supply voltage became low.
SNOW MODE SW Snow mode switch was pressed.
NO RECORD —
Monitored Item [unit] ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
VHCL SPEED SE
[km/h] or [mph] ××× Indicates vehicle speed calculated from ICC unit through CAN
communication [ABS actuator and
electric unit (control unit)
transmits wheel speed sensor signal through CAN communica-
tion].
SET VHCL SPD
[km/h] or [mph] ××
Indicates set vehicle speed memorized in ICC unit.
THRTL OPENING
[%] ××× Indicates throttle angle read from ICC unit through CAN commu-
nication (ECM transmits throttle angle through CAN communica-
tion).
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