2008 INFINITI FX35 cruise control

TROUBLE DIAGNOSIS — GENERAL DESCRIPTIONACS-31
< SERVICE INFORMATION > [ICC]
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ENGINE RPM
[rpm] ×× Indicates engine speed read from ICC unit through CAN commu-
nication (ECM transmits engine speed through CAN communica-
tion).
DISTANCE ADJ
[ShortMid/Long] ×××
Indicates set distance memorized in ICC unit.
WIPER SW
[Off/Low/High] ××
Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front
wiper request signal through CAN communication).
MAIN SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
SET/COAST SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
CANCEL SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
RESUME/ACC SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
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.
STOP LAMP SW
[On/Off] ××× Indicates [On/Off] status as judged from stop lamp switch signal.
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.
IDLE SW
[On/Off] ×× Indicates [On/Off] status of idle switch read from ICC unit through
CAN communication (ECM
transmits On/Off status through CAN
communication).
GEAR
[1, 2, 3, 4, 5] ×× Indicates AT gear position read from ICC unit through CAN com-
munication (TCM transmits gear position through CAN commu-
nication).
BUZZER O/P
[On/Off] ×
Indicates [On/Off] status of ICC warning chime output.
ICC WARNING ×NOTE:
This item is displayed, but cannot monitor.
VHCL SPD AT
[km/h] or [mph] ×Indicates vehicle speed calculated from AT vehicle speed sensor
read from ICC unit through CAN communication (TCM transmits
AT vehicle speed sensor signal through CAN communication).
PRESS SENS
[bar] ××× Indicates brake fluid pressure value calculated from signal volt-
age of pressure sensor.
PRESS SENS 2 ×× NOTE:
This item is displayed, but cannot monitor.
D RANGE SW
[On/Off] ×× Indicates [On/Off] status of “D” position read from ICC unit
through CAN communication (TCM transmits On/Off condition of
“D” position through CAN communication).
A/T OD OFF
[On/Off] ×
Indicates [On/Off] status of OD cancel output under control.
Monitored Item [unit]
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-35
< SERVICE INFORMATION > [ICC]
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Diagnostic Trouble Code (DTC) ChartINFOID:0000000001328825
×: Applicable
DTC
No. CONSULT-III
screen terms ICC
system
warning lamp Fail-safe
Malfunctions detected where... Refer-
ence
page
Ve h i c l e -
to-
vehicle
distance control mode Conven-
tional
(fixed
speed) cruise
control mode Brake as-
sist (with
preview
function)
11 CONTROL UNIT ××××  ICC unit internal malfunctionACS-36
20 CAN COMM CIRCUIT ××××  ICC unit detected CAN communi-
cation malfunction. ACS-36
31 POWER SUPPLY CIR
××××  ICC unit power supply voltage is
excessively low (less than 8 V). ACS-37
34 POWER SUPPLY CIR2
××××  ICC unit power supply voltage is
excessively high (more than 19 V). ACS-37
41 VHCL SPEED SE CIRC
××××  Wheel sensor malfunction.
 ABS actuator and electric unit
(control unit) malfunction
 AT vehicle speed sensor malfunc- tion
TCM malfunction ACS-37
43 ABS/TCS/VDC CIRC
××××  VDC/TCS/ABS system malfunc-
tion ACS-38
45 BRAKE SW/STOP L SW
××××  Brake and stop lamp switch har-
ness is open or shorted.
 Brake and stop lamp switch is ON
or stuck to OFF.
 Brake and stop lamp switch is stuck to ON. ACS-38
46 OPERATION SW CIRC
×××  ICC steering switch harness or spi-
ral cable is open or shorted.
 ICC steering switch malfunction ACS-40
61 PRESS SEN CIRCUIT
×× ×  Brake pressure sensor harness is
open or shorted.
 Brake pressure sensor malfunction
 Brake pressure sensor input circuit malfunction ACS-41
62
BOOSTER SOL/V
CIRCUIT ×× ×  Solenoid harness is open or short-
ed.
 Solenoid is open.
 Solenoid drive circuit malfunction ACS-42
63 RELEASE SW CIRCUIT
××××  Release switch harness is open or
shorted.
 Release switch malfunction
 Release switch input circuit mal- function ACS-43
65 PRESSURE CONTROL
×× ×  Booster malfunctionACS-45
74 LASER BEAM OFF CNTR ×× ×  Laser beam of ICC sensor is off the
aiming point. ACS-45
90 STOP LAMP RLY FIX
×× ×  Normally open terminal of stop
lamp relay is stuck. ACS-46
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ACS-36
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
DTC 11 CONTROL UNIT
INFOID:0000000001328826
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if any item other than “DTC 11 CONTRO L UNIT” is indicated on self-diagnosis display.
Is any indicated?
YES >> 1. Repair or replace applicable item. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC unit.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 20 CAN COMM CIRCUITINFOID:0000000001328827
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Turn ignition switch ON and wait for 2 second or more.
2. Check self-diagnosis of ICC system.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-14, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-35, "
CONSULT-III/GST Data Link Connector (DLC) Circuit".
92 ECM CIRCUIT ××××  ECM malfunction
 Accelerator pedal position sensor
malfunction
 ICC unit malfunction ACS-50
96 NP RANGE
×××  Park/neutral position switch har-
ness is open or shorted.
 Park/neutral position switch mal- function.
 TCM malfunction ACS-51
97 AT CIRCUIT
×××  TCM malfunctionACS-52
98 GEAR POSITION ×××  TCM malfunction
 AT turbine revolution sensor mal-
function
 AT vehicle speed sensor malfunc-
tion ACS-52
102 RADAR STAIN
×× ×  ICC sensor body window has con-
tamination. ACS-53
103 LASER SENSOR FAIL
×× ×  ICC sensor internal malfunctionACS-53
104 LASER AIMING INCMP ×× ×  Laser beam aiming of ICC sensor
is not adjusted. ACS-54
107 LASER COMM FAIL
×× ×  CAN data received by ICC sensor
is strange (from ICC unit, combina-
tion meter or ECM). ACS-54
109 LASER HIGH TEMP
×× ×  Temperature around ICC sensor is
excessively high. ACS-54
DTC
No. CONSULT-III
screen terms ICC
system
warning lamp Fail-safe
Malfunctions detected where... Refer-
ence
page
Vehicle-
to-
vehicle
distance control mode Conven-
tional
(fixed
speed) cruise
control mode Brake as-
sist (with
preview
function)
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TROUBLE DIAGNOSIS FOR SYMPTOMSACS-55
< SERVICE INFORMATION > [ICC]
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Symptom ChartINFOID:0000000001328848
Symptom 1 MAIN Switch Does Not Turn ON*1, MAIN Switch Does Not Turn OFF*2
INFOID:0000000001328849
NOTE:
 *1: The ICC system display in the combination meter does not illuminate.
 *2: The ICC system display in the combination meter remains powered.
1.CHECK MAIN SWITCH
With “Data Monitor” of “ICC”, check that MAIN switch operates normally.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check connector housing for disconnected, loose, bent, and collapsed terminals.
Symptoms Reference page
Operation MAIN switch does not switch ON.
Symptom 1
ACS-55
MAIN switch does not switch OFF. Symptom 1
ACS-55
Cruise does not function for setting (powering functions). Symptom 2
ACS-56
CANCEL switch does not function. Symptom 3
ACS-56
Resume does not function. Symptom 3
ACS-56
Set speed does not increase. Symptom 3
ACS-56
Set distance to the vehicle ahead cannot be changed. Symptom 3
ACS-56
ICC is not cancelled when the A/T selector lever is in other
than “D” and “M” position. Symptom 4
ACS-57
Display/Chime ICC system display does not appear.
Check combination meter. Refer to
DI-15, "
Trou-
ble Diagnosis".
Chime does not function. Symptom 5
ACS-57
Control Driving force is hunting. Symptom 6
ACS-58
Function to detect
the vehicle ahead System frequently cannot detect the vehicle ahead.
Symptom 7
ACS-58
Distance to detect the vehicle ahead is short. Symptom 7
ACS-58
System misidentifies a vehicle even though there is no vehi-
cle ahead. Refer to
ACS-14.
Refer to ACS-11, "
ICC System Running Test".
System misidentifies a vehicle in the next lane. Refer to
ACS-14
.
Refer to ACS-11, "
ICC System Running Test".
System does not detect a vehicle at all. Symptom 8
ACS-59
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TROUBLE DIAGNOSISAT-89
< SERVICE INFORMATION >
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1 POSITION SW (ON/OFF) X —
SLCT LVR POSI — X Selector lever position is recognized by the TCM.
For fail-safe operation, the specific value used
for control is displayed.
OD CONT SW (ON/OFF) X —
Not mounted but displayed.
POWERSHIFT SW (ON/OFF) X —
HOLD SW (ON/OFF) X —
MANU MODE SW (ON/OFF) X —
NON M-MODE SW (ON/OFF) X —
UP SW LEVER (ON/OFF) X —
DOWN SW LEVER (ON/OFF) X —
SFT UP ST SW (ON/OFF) — —
Not mounted but displayed.
SFT DWN ST SW (ON/OFF) — —
ASCD-OD CUT (ON/OFF) — —
ASCD-CRUISE (ON/OFF) — —
ABS SIGNAL (ON/OFF) — —
ACC-OD CUT (ON/OFF) — — ICC (intelligent cruise control)
ACC-SIGNAL (ON/OFF) — —
TCS GR/P KEEP (ON/OFF) — —
TCS SIGNAL 2 (ON/OFF) — —
TCS SIGNAL 1 (ON/OFF) — —
TCC SOLENOID (A) — X
LINE PRES SOL (A) — X
I/C SOLENOID (A) — X
FR/B SOLENOID (A) — X
D/C SOLENOID (A) — X
HLR/C SOL (A) — X
ON OFF SOL (ON/OFF) — — LC/B solenoid
TCC SOL MON (A) — —
L/P SOL MON (A) — —
I/C SL MON (A) — —
FR/B SOL MON (A) — —
D/C SOL MON (A) — —
HLR/C SOL MON (A) — —
ON OFF SOL MON (ON/OFF) — — LC/B solenoid
P POSI IND (ON/OFF) — — Monitored item (Unit)
Select Monitor Item
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
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DI-26
< SERVICE INFORMATION >
UNIFIED METER AND A/C AMP
UNIFIED METER AND A/C AMP
System DescriptionINFOID:0000000001328456
 For the unified meter and A/C amp., the signal required for controlling the combination meter are integrated
in the A/C auto amp.
 The unified meter and A/C amp. corresponds to a CONS ULT-III function (self-diagnosis results, CAN diag-
nosis support monitor, data monitor).
COMBINATION METER CONTROL FUNCTION
 Unified meter and A/C amp. receives necessary information for combination meter from each unit by CAN communication.
 Unified meter and A/C amp. transmits a signals with communication line (TX, RX) between unified meter and A/C amp. and combination meter.
Input/output signals between unified meter and A/C amp. and combination meter.
NOTE:
Combination meter performs fail-safe operation when unified meter and A/C amp. communication is malfunctioning. Refer to DI-5, "
Sys-
tem Description".
A/C AUTO AMP. FUNCTION
Unified meter and A/C amp. controls each operation for A/C auto amp. Regarding A/C control, refer to AT C -
24, "Description of Air Conditioner LAN Control System" in ATC section.
OTHER FUNCTIONS
Drive Computer Function
The signals required for the distance to empty (DTE) display are centralized in the unified meter and A/C
amp., converted into data, and transmitted to the disp lay unit (without NAVI) and display control unit (with
NAVI) using CAN communication.
Signal Buffer Function
Unified meter and A/C amp. transmits each signal to other units with CAN communication.
Unit Input Output
Unified meter and A/C amp.  Seat belt buckle switch signal (Driver's side)
 Parking brake signal
 Illumination control nighttime required signal
 Refuel status signal
 Low-fuel warning lamp condition signal
 Combination meter receive error signal
 Delivery destination data signal
 Combination meter specifications signal  Vehicle speed signal (8-pulse)
 Engine speed signal
 Engine coolant temperature signal
 Fuel level sensor signal (resistance value)
 Malfunction indicator lamp signal
 ABS warning lamp signal
 Low tire pressure warning lamp signal
 Run-flat tire wa
rning lamp signal
 Brake warning lamp signal
 A/T CHECK warning lamp signal
 ICC warning lamp signal
 Oil pressure switch signal
 Door switch signal
 AWD warning lamp signal
 Key warning lamp signal
 VDC OFF indicator lamp signal
 SLIP indicator lamp signal
 CRUISE indicator lamp signal
 SET indicator lamp signal
 High beam request signal
 Turn indicator signal
 Snow mode switch signal
 ICC system display signal
 Shift position indicator signal
 Manual mode indicator signal
 Manual mode gear position signal
 CAN communication condition signal of A/T
 Position lights request signal
 Buzzer output signal
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)EC-37
< SERVICE INFORMATION > [VQ35DE]
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AUTOMATIC SPEED CONTROL DEVICE (ASCD)
System DescriptionINFOID:0000000001325901
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 dr
iver 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 thro ttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE i ndicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
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 indi cator in combination meter illuminates.)
ACCELERATOR OPERATION
If the RESUME/ACCELERATE switch is pressed during cruise control driving, increase the vehicle speed until
the switch is released or vehicle speed reac hes 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 t he 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.
RESUME OPERATION
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) switch Gear position
Wheel sensor. Vehicle speed*
TCM Powertrain revolution*
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ASCD INDICATOREC-547
< SERVICE INFORMATION > [VQ35DE]
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ASCD INDICATOR
Component DescriptionINFOID:0000000001326431
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE, SET,
and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD
steering switch is turned ON to indicated that
ASCD system is ready for operation.
SET indicator illuminates when following conditions are met.
 CRUISE indicator is illuminated.
 SET/COAST switch on ASCD steering switch is tur ned ON while vehicle speed is within the range of ASCD
setting.
SET indicator remains lit during ASCD control.
Refer to EC-37
for the ASCD function.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001326432
Specification data are reference value.
MONITOR ITEM CONDITION SPECIFICATION
CRUISE LAMP  Ignition switch: ON  ON/OFF (MAIN) switch: Pressed
at the 1st time → at the 2nd time ON
→ OFF
SET LAMP  MAIN switch: ON
 When vehicle speed is be-
tween 40km/h (25MPH) and
144km/h (89MPH) ASCD: Operating ON
ASCD: Not operating OFF
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