relay INFINITI FX35 2007 Service Manual

ACS-2Revision: 2006 July 2007 FX35/FX45
DTC 65 PRESSURE CONTROL .........................
... 54
DTC 74 LASER BEAM OFF CNTR ..................... ... 55
DTC 90 STOP LAMP RLY FIX ............................ ... 55
DTC 92 ECM CIRCUIT ........................................ ... 61
DTC 96 NP RANGE ............................................ ... 62
DTC 97 AT CIRCUIT ........................................... ... 64
DTC 98 GEAR POSITION ................................... ... 64
DTC 102 RADAR STAIN ..................................... ... 65
DTC 103 LASER SENSOR FAIL ......................... ... 65
DTC 104 LASER AIMING INCMP ....................... ... 66
DTC 107 LASER COMM FAIL ............................. ... 66
DTC 109 LASER HIGH TEMP ............................ ... 66
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 67
Symptom Chart .................................................... ... 67
Symptom 1: MAIN Switch Does Not Turn ON*
1 ,
MAIN Switch Does Not Turn OFF*
2 ..................... ... 68
Symptom 2: ICC System Cannot Be Set (MAIN
Switch Turns ON/OFF) ........................................ ... 68
Symptom 3: ICC System Cannot Be Operated by
CANCEL Switch, RESUME/ACCELERATE Switch
or DISTANCE Switch ........................................... ... 69
Symptom 4: ICC System Is Not Cancelled When the A/T Selector Lever Is in Other Than “D” and “M”
Position ................................................................ ... 70
Symptom 5: Chime Does Not Sound ................... ... 70
Symptom 6: Driving Force Is Hunting .................. ... 71
Symptom 7: ICC System Frequently Cannot Detect
the Vehicle Ahead/ Detection Zone Is Short ........ ... 71
Symptom 8: The System Does Not Detect the Vehi-
cle Ahead at All .................................................... ... 72
ELECTRICAL COMPONENT INSPECTION .......... ... 73
ICC Steering Switch ............................................. ... 73
Booster Solenoid .................................................. ... 73
Release Switch .................................................... ... 73
ICC Brake Switch and Stop Lamp Switch ............ ... 74
ICC Brake Hold Relay .......................................... ... 74
REMOVAL AND INSTALLATION ........................... ... 75
ICC Unit ............................................................... ... 75
REMOVAL ......................................................... ... 75
INSTALLATION ................................................. ... 75
ICC Sensor .......................................................... ... 75
REMOVAL ......................................................... ... 75
INSTALLATION ................................................. ... 76
ICC Steering Switch ............................................. ... 76

ACS-8
[ICC]
DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
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 electric unit (control unit) transmits wheel speed sensor sig-
nal through CAN communication).
BCM WIPER SW
[OFF/LOW/HIGH] ×
Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front wiper request signal
through CAN communication).
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.
Stop lamp
switch STOP LAMP SW
[ON/OFF] Indicates [ON/OFF] status as judged from stop lamp switch signal.
Input
Data monitored
Item [unit] CAN Description
OutputData 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.
Output CONSULT-ll 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.

DESCRIPTION ACS-9
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
Components DescriptionNKS003EL
CAN CommunicationNKS003EM
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-49, "CAN System Specification Chart" .
Component Vehicle-to-
vehicle
distance
control mode Conventional
(fixed speed) cruise
control mode Brake assist
(with pre-
view func- tion) 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.

ACS-34
[ICC]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
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 sen-
sor read from ICC unit through CAN communication (TCM
transmits AT vehicle speed sensor signal through CAN commu-
nication).
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.
NP RANGE SW
[ON/OFF] ×× Indicates PNP switch signal read from ICC unit through CAN
communication (TCM transmits PNP switch signal through CAN
communication).
DISTANCE × NOTE:
This item is displayed, but cannot monitor.
RELATIVE SPD × NOTE:
This item is displayed, but cannot monitor.
STP LMP DRIVE
[ON/OFF] ××
Indicates [ON/OFF] status of brake hold relay drive output.
TURN SIGNAL ×× NOTE:
This item is displayed, but cannot monitor.
Monitored Item
[unit] ECU INPUT
SIGNALS MAIN
SIGNALS SELEC-
TION FROM MENU Description

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS ACS-43
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
90 STOP LAMP RLY FIX×× ×
Normally open terminal of stop
lamp relay is stuck. ACS-55
92 ECM CIRCUIT
××××

ECM malfunction

Accelerator pedal position sensor
malfunction

ICC unit malfunction ACS-61
96 NP RANGE
×××

Park/neutral position switch har-
ness is open or shorted.

Park/neutral position switch mal-
function.

TCM malfunction ACS-62
97 AT CIRCUIT
×××
TCM malfunctionACS-64
98 GEAR POSITION ×××

TCM malfunction

AT turbine revolution sensor mal-
function

AT vehicle speed sensor malfunc-
tion ACS-64
102 RADAR STAIN
×× ×
ICC sensor body window has con-
tamination. ACS-65
103 LASER SENSOR FAIL
×× ×
ICC sensor internal malfunctionACS-65
104 LASER AIMING INCMP ×× ×
Laser beam aiming of ICC sensor
is not adjusted. ACS-66
107 LASER COMM FAIL
×× ×

CAN data received by ICC sensor
is strange (from ICC unit, combi-
nation meter or ECM). ACS-66
109 LASER HIGH TEMP
×× ×
Temperature around ICC sensor is
excessively high. ACS-66
DTC
No. CONSULT-II
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
assist (with
preview
function)

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS ACS-47
[ICC]
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ACS
Revision: 2006 July 2007 FX35/FX45
3. CHECK BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check brake switch for proper installation, and adjust the switch if necessary. Refer to BR-6, "
BRAKE PEDAL"
.
OK or NG
OK >> GO TO 4.
NG >> After adjustment, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
4. CHECK ICC BRAKE SWITCH
Check ICC brake switch. Refer to ACS-74, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> 1. Replace ICC brake switch. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
5. CHECK STOP LAMP ILLUMINATION
Check stop lamp illumination.
OK or NG
OK >> GO TO 6.
NG >> 1. Check stop lamp circuit.
2. After repairing, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
6. CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Remove ICC brake hold relay.
3. Check ICC brake hold relay. Refer to ACS-74, "
ICC Brake Hold Relay"
OK or NG
OK >> GO TO 7.
NG >> 1. Replace brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

ACS-48
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2006 July 2007 FX35/FX45
7. CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Disconnect ICC unit connector and stop lamp switch connector.
2. Check continuity between ICC unit harness connector and ICC brake hold relay harness connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
8. CHECK STOP LAMP SWITCH CIRCUIT
Check continuity between ICC unit harness connector and stop lamp
switch harness connector.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> 1. Repair harness between ICC unit and stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
DTC 46 OPERATION SW CIRCNKS003FA
1. CHECK CONNECTOR FOR ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection
1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter- minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
ICC unit connector Terminal ICC brake hold
relay connector Terminal Continuity
M89 38 E14 7 Yes
ICC unit connector Terminal Ground Continuity
M89 38 No
PKIA9907E
ICC unit connector Terminal Stop lamp switch
connector Terminal Continuity
M89 38 E210 2 Yes
PKIB4163E

ACS-56
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2006 July 2007 FX35/FX45
2. CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
With CONSULT-II
With “DATA MONITOR”, check that “STOP LAMP SW” and “BRAKE SW” operate normally. Refer to ACS-33,
"DATA MONITOR" .
OK or NG
OK >> GO TO 12.
NG >>

BRAKE SW: GO TO 3.

STOP LAMP SW: GO TO 9.
3. CHECK BRAKE SWITCH INSTALLATION AND ADJUSTMENT
Check brake switch for proper installation, and adjust the switch if necessary. Refer to BR-6, "
BRAKE PEDAL"
.
OK or NG
OK >> GO TO 4.
NG >> After adjustment, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
4. CHECK ICC BRAKE SWITCH AND STOP LAMP SWITCH
Check ICC brake switch and stop lamp switch. Refer to ACS-74, "
ICC Brake Switch and Stop Lamp Switch" .
OK or NG
OK >> GO TO 5.
NG >> 1. Replace ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
5. CHECK ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Check ICC brake hold relay. Refer to ACS-74, "
ICC Brake Hold Relay" .
OK or NG
OK >> GO TO 6.
NG >> 1. Replace ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS ACS-57
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Revision: 2006 July 2007 FX35/FX45
6. CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC BRAKE SWITCH
1. Disconnect ICC brake switch connector and ICC unit connector.
2. Check continuity between ICC brake hold relay harness connec- tor and ICC brake switch harness connector.
3. Check continuity between ICC brake hold relay harness connec- tor and ground.
OK or NG
OK >> GO TO 7.
NG >> 1. Repair harness between ICC brake hold relay and ICC brake switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
7. CHECK HARNESS BETWEEN ICC UNIT AND ICC BRAKE HOLD RELAY
1. Disconnect ECM connector.
2. Check continuity between ICC unit harness connector and ICC brake hold relay harness connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> 1. Repair harness between ICC unit and ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
ICC brake hold
relay connector Terminal
ICC brake switch
connector Terminal Continuity
E14 3 E209 2 Yes
ICC brake hold
relay connector Terminal
Ground Continuity
E14 3 No
PKIB4167E
ICC unit connector Terminal ICC brake hold relay
connector Terminal Continuity
M89 29 E14 4 Yes
ICC unit connector Terminal Ground Continuity
M89 29 No
SKIA5980E

ACS-58
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2006 July 2007 FX35/FX45
8. CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ICC brake switch harness connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> 1. Repair or replace harness or fuse. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
9. CHECK STOP LAMP ILLUMINATION
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Check stop lamp circuit.
OK or NG
OK >> GO TO 10.
NG >> After repairing, erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
10. CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Connect ICC brake hold relay connector.
2. Disconnect stop lamp switch connector.
3. When brake pedal is not depressed, make sure that stop lamp does not illuminate.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> GO TO 11.
11 . CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check ICC brake hold relay. Refer to ACS-74, "
ICC Brake Hold Relay" .
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NG >> 1. Replace ICC brake hold relay. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
ICC brake switch
connector Terminal
Voltage (Approx.)
(+) ( −)
E209 1 Ground Battery voltage
PKIB4168E