power supply INFINITI FX35 2008 Service Manual

ABCDEFGHIJKLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
TRANSAXLEATAutomatic TransmissionDDRIVELINE/AXLETFTransferPRPropeller ShaftFFDFront Final DriveRFDRear Final DriveFAXFront AxleRAXRear AxleESUSPENSIONFSUFront SuspensionRSURear SuspensionWTRoad Wheels & TiresFBRAKESBRBrake SystemPBParking Brake SystemBRCBrake Control SystemGSTEERINGPSPower Steering SystemHRESTRAINTSSBSeat BeltsSRSSupplemental Restraint System
(SRS)IBODYBLBody, Lock & Security SystemGWGlasses, Window System & Mir-
rorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Tele-
phone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit Ele-
mentsLMAINTENANCEMAMaintenanceEdition: April 2007
Revision: April 2007

ACS-1
ELECTRICAL
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SECTION ACS
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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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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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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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.
PKIA9673E
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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).
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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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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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-37
< SERVICE INFORMATION > [ICC]
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DTC 31 POWER SUPPLY CIR, DT C 34 POWER SUPPLY CIR 2INFOID:0000000001328828
1.CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again.
3. Erase DTC and perform ICC 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 running test. T hen perform self-diagnosis of ICC system again.
2.CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
1. Turn ignition switch ON.
2. Check voltage between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair ICC unit power supply harness. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
3.CHECK GROUND CIRCUIT FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Repair ICC unit ground harness. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
DTC 41 VHCL SPEED SE CIRCINFOID:0000000001328829
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 43 ABS/TCS/VDC CIRC” or “DTC 20 CAN COMM CIRCUIT” other than “DTC 41 VHCL
SPEED SE CIRC” is indicated in self-diagnosis item in the display.
Is any indicated?
YES >> 1. Repair or replace applicable item.
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M89 33
Ground Battery voltage
42
SKIA1173E
ICC unit con-
nector Te r m i n a l
Ground Continuity
M88 19
Ye s
20
M89 46
SKIA6650E
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ACS-42
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
4. Check continuity between ICC unit harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair harness between brake pressure sensor and ICC unit.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK POWER SUPPLY CIRCUIT FOR BRAKE PRESSURE SENSOR
1. Connect ICC unit connector.
2. Turn ignition switch ON.
3. Check voltage between ICC unit harness connector terminals.
OK or NG
OK >> 1. Replace brake pressure sensor. Refer to BR-12,
"Removal and Installation".
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 62 BOOSTER SOL/V CIRCUITINFOID:0000000001328834
1.CHECK SOLENOID/RELEASE SWIT CH AND ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect brake booster connector and ICC unit connector, and connect them securely again.
3. Erase DTC and perform ICC system running test. T hen 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.
2.CHECK HARNESS BETWEEN SOLENO ID/RELEASE SWITCH AND ICC UNIT
ICC unit connector Terminal
GroundContinuity
M88 8
No
17
24
PKIB1444E
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M88 8 24 5 V
SKIA6653E
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ACS-44
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector and brake booster connector.
3. Check continuity between ICC unit harness connector (A) and
brake booster harness connector (B).
4. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair harness between brake booster and ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK RELEASE SWITCH POWER SUPPLY CIRCUIT
1. Connect ICC unit connector.
2. Turn ignition switch ON.
3. Check voltage between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 4.
NG >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
4.CHECK RELEASE SWITCH
1. Turn ignition switch OFF.
2. Check release switch. Refer to ACS-63, "
Release 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 >> Release switch malfunction
1. Replace brake booster.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
AB
Continuity
ICC unit
connector Te r m i n a lBrake booster
connector Te r m i n a l
M88 6
E54 1
Ye s
15 3
22 2
PKIC5180E
ICC unit
connector Te r m i n a l
Ground Continuity
M88 6
No
15
22
PKIB1446E
ICC unit
connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M88 6 Ground 10 V
SKIA6656E
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