brake sensor INFINITI M35 2007 Factory Service Manual

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION ACS
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ACS
Revision: 2007 April2007 M35/M45
AUTO CRUISE CONTROL SYSTEM
ASCD
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ..... 3
Description ............................................................... 3
ICC
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for ICC System Service ........................ 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
DESCRIPTION ............................................................ 6
Outline ...................................................................... 6
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................... 6
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................. 6
BRAKE ASSIST (WITH PREVIEW FUNCTION) ..... 6
Functional Diagram .................................................. 7
Components Description .......................................... 9
CAN Communication ................................................ 9
CAN COMMUNICATION UNIT ............................. 9
Switch Operation .................................................... 10
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ....................................................... 10
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................... 10
ICC System Display ................................................ 11
IN VEHICLE-TO-VEHICLE DISTANCE CON-
TROL MODE ........................................................ 11
IN CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................ 11
ACTION TEST .......................................................... 12
ICC System Running Test ...................................... 12
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................. 12
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................... 13LASER BEAM AIMING ADJUSTMENT ................... 15
Outline .................................................................... 15
Preparation ............................................................. 15
Outline of Adjustment Procedure ............................ 15
Setting the ICC Target Board .................................. 15
ADJUSTING HEIGHT OF THE TARGET ............ 15
ADJUSTING THE RIGHT-LEFT POSITION OF
THE TARGET ...................................................... 16
SETTING THE TARGET ..................................... 16
Aiming Adjustment .................................................. 18
CHECK AFTER THE ADJUSTMENT .................. 20
ELECTRICAL UNITS LOCATION ............................ 21
Component Parts and Harness Connector Location ... 21
WIRING DIAGRAM ................................................... 22
Schematic ............................................................... 22
Wiring Diagram — ICC — ...................................... 23
TERMINALS AND REFERENCE VALUE ................. 28
Terminals and Reference Value for ICC Sensor Inte-
grated Unit .............................................................. 28
TROUBLE DIAGNOSIS - GENERAL DESCRIP-
TION .......................................................................... 29
Fail-Safe Function .................................................. 29
Work Flow ............................................................... 29
CONSULT-II Function (ICC) ................................... 30
DESCRIPTION .................................................... 30
CONSULT-II BASIC OPERATION ....................... 30
WORK SUPPORT ............................................... 30
SELF-DIAGNOSTIC RESULTS ........................... 31
DATA MONITOR ................................................. 31
ACTIVE TEST ..................................................... 33
Self-Diagnostic Function ......................................... 34
WITH CONSULT-II .............................................. 34
WITHOUT CONSULT-II ....................................... 35
SELF-DIAGNOSIS BY DOT MATRIX LCD WILL
NOT RUN ............................................................ 36
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ........................................................................ 40
Diagnostic Trouble Code (DTC) Chart ................... 40
DTC 0 CONTROL UNIT ......................................... 42
DTC 1 POWER SUPPLY CIR, DTC 2 POWER SUP-

ACS-2Revision: 2007 April2007 M35/M45 PLY CIR 2 ............................................................... 42
DTC 3 VHCL SPEED SE CIRC .............................. 43
DTC 4 ABS/TCS/VDC CIRC .................................. 43
DTC 5 BRAKE SW/STOP L SW ............................. 44
DTC 6 OPERATION SW CIRC ............................... 48
DTC 12 LASER BEAM OFFCNTR ......................... 49
DTC 13 STOP LAMP RLY FIX ............................... 50
DTC 14 ECM CIRCUIT ........................................... 56
DTC 15 GEAR POSITION ...................................... 57
DTC 16 RADAR STAIN .......................................... 58
DTC 18 LASER AIMING INCMP ............................ 58
DTC 21 UNIT HIGH TEMP ..................................... 58
DTC 24 NP RANGE ............................................... 59
DTC 25 SHIFT RANGE IND ................................... 59
DTC 26 ECD MODE MALF .................................... 60
DTC 27 ECD PWR SUPLY CIR .............................. 60
DTC 100 CAN COMM CIRCUIT ............................. 61
DTC 110 CONTROL UNIT (CAN) ........................... 61
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 62
Symptom Chart ....................................................... 62
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ........................ 63Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ............................................ 64
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch .............................................. 65
Symptom 4: ICC System Is Not Cancelled When
the A/T Selector Lever Is In Other Than “D” and “M” ... 65
Symptom 5: Chime Does Not Sound ...................... 66
Symptom 6: Driving Force Is Hunting ..................... 67
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........... 67
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All ....................................................... 68
ELECTRICAL COMPONENT INSPECTION ............. 69
ICC Steering Switch ................................................ 69
ICC Brake Hold Relay ............................................. 69
ICC Brake Switch and Stop Lamp Switch ............... 69
REMOVAL AND INSTALLATION .............................. 70
ICC Sensor Integrated Unit ..................................... 70
REMOVAL ............................................................ 70
INSTALLATION .................................................... 70
ICC Steering Switch ................................................ 70

ACS-6
[ICC]
DESCRIPTION
Revision: 2007 April2007 M35/M45
DESCRIPTIONPFP:00000
OutlineNKS004CF
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
Vehicle-to-vehicle distance control mode, the driver can maintain the same speed as other vehicles without
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 ICC sensor integrated unit detects a slower moving vehicle ahead, the system will reduce speed so that
the vehicle ahead can be followed at the selected distance.
The system automatically controls the throttle and applies the brakes (up to 25% of vehicle braking power) if
necessary.
The detection range of the sensor is approximately 390 ft (120 m) ahead.
Refer to Owner's Manual for Intelligent Cruise Control System operating instructions.
CONVENTIONAL (FIXED SPEED) CRUISE CONTROL MODE
Conventional (fixed speed) cruise control 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 conventional 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
depresses the brake pedal and improves brake response by reducing its free play.
Refer to Owner's Manual for BRAKE ASSIST (WITH PREVIEW FUNCTION) operating instructions.

DESCRIPTION
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[ICC]
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Functional DiagramNKS004F8
Items of input/output signal to be checked with CONSULT-II

Items of input signal to be checked with “DATA MONITOR”.
SKIB9221E
Signal name CAN Transmission unitMonitored Item
[unit]Description
Accelerator pedal
position signal×
ECMTHRTL OPENING
[%]ICC sensor integrated unit receives accelerator pedal posi-
tion signal from ECM with CAN communication.
ICC steering switch
signal×MAIN SW
[ON/OFF]
ICC sensor integrated unit receives ICC steering switch sig-
nal from ECM with CAN communication. ×SET/COAST SW
[ON/OFF]
×CANCEL SW
[ON/OFF]
×RESUME/ACC SW
[ON/OFF]
×DISTANCE SW
[ON/OFF]
ICC brake switch
signal×BRAKE SW
[ON/OFF]ICC sensor integrated unit receives ICC brake switch signal
from ECM with CAN communication.
Stop lamp switch
signal×STOP LAMP SW
[ON/OFF]ICC sensor integrated unit receives stop lamp switch signal
from ECM with CAN communication.
Closed throttle
position signal×IDLE SW
[ON/OFF]ICC sensor integrated unit receives closed throttle position
signal from ECM with CAN communication.
Engine speed sig-
nal×ENGINE RPM
[rpm]ICC sensor integrated unit receives engine speed signal from
ECM with CAN communication.

ACS-8
[ICC]
DESCRIPTION
Revision: 2007 April2007 M35/M45

Items of output signal to be checked with “DATA MONITOR”.

Items of output signal to be checked with “ACTIVE TEST”.
Shift position signal×
TCMD RANGE SW
[ON/OFF]ICC sensor integrated unit receives shift position signal from
TCM with CAN communication.
×NP RANGE SW
[ON/OFF]ICC sensor integrated unit receives shift position signal from
TCM with CAN communication.
Output shaft revo-
lution signal×VHCL SPD AT
[km/h] or [mph]ICC sensor integrated unit receives A/T vehicle speed sen-
sor signal (output shaft revolution signal) from TCM with
CAN communication.
Current gear posi-
tion signal×GEAR
[1, 2, 3, 4, 5]ICC sensor integrated unit receives current gear position sig-
nal from TCM with CAN communication.
Vehicle speed sig-
nal×ABS actuator and
electric unit (con-
trol unit)VHCL SPEED SE
[km/h] or [mph]ICC sensor integrated unit receives vehicle speed signal
(wheel speed) from ABS actuator and electric unit (control
unit) with CAN communication.
Front wiper request
signal×BCMWIPER SW
[OFF/LOW/HIGH]ICC sensor integrated unit receives front wiper request signal
from BCM with CAN communication. Signal name CAN Transmission unitMonitored Item
[unit]Description
Signal name CAN Reception unitMonitored Item
[unit]Description
Meter display signal×
Combination
meter
(through unified
meter and A/C
amp.)CRUISE LAMP
[ON/OFF]
ICC sensor integrated unit transmits meter display signal to
combination meter (through unified meter and A/C amp.)
with CAN communication. ×OWN VHCL
[ON/OFF]
×VHCL AHEAD
[ON/OFF]
×SET DISP IND
[ON/OFF]
ICC system warning
lamp signal×ICC WARNING
[ON/OFF]ICC sensor integrated unit transmits ICC system warning
lamp signal to combination meter (through unified meter and
A/C amp.) with CAN communication.
Buzzer output signal×BUZZER O/P
[ON/OFF] ICC sensor integrated unit transmits buzzer output signal to
combination meter (through unified meter and A/C amp.)
with CAN communication.
ICC brake hold relay
drive signalICC brake hold
relaySTP LMP DRIVE
[ON/OFF]ICC sensor integrated unit outputs stop lamp drive output
signal to ICC brake hold relay.
Signal name CAN Reception unit Test Item Description
Buzzer output signal×Combination
meter
(through unified
meter and A/C
amp.)ICC BUZZERAble to beep the ICC warning chime with a driving signal
from ICC sensor integrated unit.

Meter display signal

ICC system warn-
ing lamp signal×METER LAMPAble to illuminate the ICC system warning lamp and the
MAIN switch indicator lamp with a driving signal from the
ICC sensor integrated unit.
ICC brake hold relay
drive signalICC brake hold
relaySTOP LAMPAble to turn ON the ICC brake hold relay with a driving sig-
nal from the ICC sensor integrated unit.

DESCRIPTION
ACS-9
[ICC]
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Components DescriptionNKS004CH
CAN CommunicationNKS004CI
CAN (Controller Area Network) is a serial communication line 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 each 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-52, "CAN Communication Signal Chart" .
ComponentVehicle-to-
vehicle
distance
control modeConventional
(fixed speed)
cruise
control modeBrake assist
(with pre-
view func-
tion)Description
ICC sensor integrated unit×××

Controls vehicle distance by operating electric throttle
control actuator based on that sensor signals and
CAN communication data.

Controls vehicle distance by transmitting deceleration
degree commandment value signal to ABS actuator
and electric unit (control unit) when deceleration with
brake is needed.

Irradiates laser beam, and receives reflected laser
beam to measure distance from preceding vehicle.
ECM×××Transmits accelerator pedal position signal, ICC brake
switch signal, stop lamp switch signal and ICC steering
switch signal to ICC sensor integrated unit through CAN
communication.
ABS actuator and electric
unit (control unit)×××

Transmits vehicle speed signal (wheel speed) and
stop lamp switch signal to ICC sensor integrated unit
through CAN communication.

Receives deceleration degree commandment value
signal from ICC sensor integrated unit, and controls
brake fluid pressure with the ABS motor.
BCM×Transmits front wiper request signal to ICC sensor inte-
grated unit through CAN communication.
TCM××Transmits gear position signal and output shaft revolu-
tion signal to ICC sensor integrated unit through CAN
communication.
Unified meter and A/C amp.×××Receives meter display signal, ICC warning lamp signal
and buzzer output signal from ICC sensor integrated
unit through CAN communication.
ICC brake switch×××Transmits operating signal to ECM when depressing
brake pedal. ICC sensor integrated unit cancels cruise
system at driver's brake operation.
Stop lamp switch×××Transmits operating signal to ECM and ABS actuator
and electric unit (control unit) when depressing brake
pedal. ICC sensor integrated unit cancels cruise system
at driver's brake operation.

LASER BEAM AIMING ADJUSTMENT
ACS-15
[ICC]
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LASER BEAM AIMING ADJUSTMENTPFP:00026
OutlineNKS004CM
Adjust the laser beam aiming every time the ICC sensor integrated unit 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 unit body window directly during laser beam aiming adjustment.

Follow the CONSULT-II when adjusting the laser beam aiming (laser beam aiming adjustment can-
not be operated without CONSULT-II).

Never ride on vehicle during laser beam aiming adjustment.

Idle and turn headlamps OFF during laser beam aiming adjustment.
PreparationNKS004CN

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 integrated unit with a soft cloth.

Remove the front bumper grille. Refer to EI-13, "Removal and
Installation of Front Bumper Grille" .
Outline of Adjustment ProcedureNKS004CO
1. Set up the ICC target board [KV99110100 (J-45718)].
2. Adjust the sensor following the procedure on CONSULT-II. (Turn manually the screw for up-down position
adjustment. ICC sensor integrated unit automatically adjust the right-left position.)
Setting the ICC Target BoardNKS004CP
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 28 mm (1.10 in) below the center.
PKIB8350E
PKIB8351E

ACS-32
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: 2007 April2007 M35/M45
THRTL SENSOR
[deg]××NOTE:
This item is displayed, but cannot monitor.
SET DISTANCE
[SHOR/MID/LONG]××Indicates set distance memorized in ICC sensor integrated unit.
MAIN SW
[ON/OFF]××Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
SET/COAST SW
[ON/OFF]××Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CANCEL SW
[ON/OFF]××Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
RESUME/ACC SW
[ON/OFF]××Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
DISTANCE SW
[ON/OFF]×Indicates [ON/OFF] status as judged from ICC steering switch signal (ECM
transmits ICC steering switch signal through CAN communication).
CRUISE OPE
[ON/OFF]××Indicates whether controlling or not (ON means “controlling”).
BRAKE SW
[ON/OFF]××Indicates [ON/OFF] status as judged from ICC brake switch signal (ECM
transmits ICC brake switch signal through CAN communication).
STOP LAMP SW
[ON/OFF]××Indicates [ON/OFF] status as judged from stop lamp switch signal (ECM
transmits stop lamp switch signal through CAN communication).
CRUISE LAMP
[ON/OFF]××Indicates [ON/OFF] status of MAIN switch indicator lamp output.
CLUTCH SW SIG
[ON/OFF]××NOTE:
This item is displayed, but cannot monitor.
NP SW SIG
[ON/OFF]××NOTE:
This item is displayed, but cannot monitor.
STP LMP DRIVE
[ON/OFF]××Indicates [ON/OFF] status of ICC brake hold relay drive output.
PWR SUP MONI
[V]××Indicates IGN voltage input by ICC sensor integrated unit.
IDLE SW
[ON/OFF]×Indicates [ON/OFF] status of idle switch read from ICC sensor integrated
unit through CAN communication (ECM transmits ON/OFF status through
CAN communication).
OWN VHCL
[ON/OFF]×Indicates [ON/OFF] status of own vehicle indicator output.
VHCL AHEAD
[ON/OFF]×Indicates [ON/OFF] status of vehicle ahead detection indicator output.
ICC WARNING
[ON/OFF]×Indicates [ON/OFF] status of ICC system warning lamp output.
BUZZER O/P
[ON/OFF] ×Indicates [ON/OFF] status of ICC warning chime output.
ENGINE RPM
[rpm]×Indicates engine speed read from ICC sensor integrated unit through CAN
communication (ECM transmits engine speed through CAN communica-
tion).
WIPER SW
[OFF/LOW/HIGH]×Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request
signal through CAN communication).
YAW R AT E
[deg/s]×NOTE:
This item is displayed, but cannot monitor.
D RANGE SW
[ON/OFF]
×Indicates [ON/OFF] status of “D” and “M” positions read from ICC sensor
integrated unit through CAN communication; ON when position “D” and “M”
(TCM transmits A/T position indicator lamp signal through CAN communi-
cation). Monitored Item [unit]MAIN
SIGNALSSELEC-
TION FROM
MENUDescription

ACS-40
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:25962
Diagnostic Trouble Code (DTC) ChartNKS004CZ
×: Applicable
DTC
No.CONSULT-II
screen termsICC
system
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Vehicle-
to-
vehicle
distance
control
modeConven-
tional
(fixed
speed)
cruise
control
modeBrake
assist
(with
preview
function)
0CONTROL UNIT
[C1A00]××××

ICC sensor integrated unit internal
malfunction.ACS-42
1POWER SUPPLY CIR
[C1A01]××××

ICC sensor integrated unit power
supply voltage is excessively low
(less than 8V).ACS-42
2POWER SUPPLY CIR 2
[C1A02]××××

ICC sensor integrated unit power
supply voltage is excessively high
(more than 19V).ACS-42
3VHCL SPEED SE CIRC
[C1A03]××××

Wheel sensor malfunction.

ABS actuator and electric unit
(control unit) malfunction.

A/T vehicle speed sensor mal-
function.

TCM malfunction.

ICC sensor integrated unit mal-
function.ACS-43
4ABS/TCS/VDC CIRC
[C1A04]××××
VDC/TCS/ABS system malfunc-
tion.ACS-43
5BRAKE SW/STOP L SW
[C1A05]××××

Stop lamp switch harness is open
or shorted.

Stop lamp switch is stuck to OFF.

ICC brake switch or stop lamp
switch is stuck to ON.

ECM malfunction.

ABS actuator and electric unit
(control unit) malfunction.ACS-44
6OPERATION SW CIRC
[C1A06]×××

ICC steering switch harness or
spiral cable is open or shorted.

ICC steering switch malfunction.ACS-48
12LASER BEAM OFFCNTR
[C1A12]×× ×
Laser beam of ICC sensor inte-
grated unit is off the aiming point.ACS-49
13STOP LAMP RLY FIX
[C1A13]×× ×

Normally open terminal of ICC
brake hold relay is stuck.

Improper installation of ICC brake
switch or stop lamp switch.

ICC brake switch malfunction.

ECM malfunction.

ABS actuator and electric unit
(control unit) malfunction.ACS-50

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
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14ECM CIRCUIT
[C1A14]××××

ECM malfunction.

Accelerator pedal position sensor
malfunction.

ICC sensor integrated unit mal-
function.ACS-56
15GEAR POSITION
[C1A15]×××

TCM malfunction.

A/T turbine revolution sensor mal-
function.

A/T vehicle speed sensor mal-
function.ACS-57
16RADAR STAIN
[C1A16]×× ×
ICC sensor integrated unit body
window has contamination.ACS-58
18LASER AIMING INCMP
[C1A18]×× ×
Laser beam aiming of ICC sensor
integrated unit is not adjusted.ACS-58
21UNIT HIGH TEMP
[C1A21]×× ×
Temperature around ICC sensor
integrated unit is excessively high.ACS-58
24NP RANGE
[C1A24]×××

Park/neutral position switch mal-
function.

TCM malfunction.ACS-59
25 SHIFT RANGE IND
[C1A25]×××
TCM malfunction.ACS-59
26ECD MODE MALF
[C1A26]×××

ABS actuator and electric unit
(control unit) malfunction.

ICC sensor integrated unit mal-
function.ACS-60
27ECD PWR SUPLY CIR
[C1A27]××××

ABS actuator and electric unit
(control unit) power supply voltage
is excessively low.

ABS actuator and electric unit
(control unit) malfunction.ACS-60
55NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.
No malfunction item has been
detected. —
100CAN COMM CIRCUIT
[U1000]××××

ICC sensor integrated unit detects
CAN communication malfunction.ACS-61
11 0CONTROL UNIT (CAN)
[U1010]××××

ICC sensor integrated unit detects
malfunction by CAN initial diagno-
sis.ACS-61
DTC
No.CONSULT-II
screen termsICC
system
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Vehicle-
to-
vehicle
distance
control
modeConven-
tional
(fixed
speed)
cruise
control
modeBrake
assist
(with
preview
function)