brake sensor INFINITI QX56 2008 Factory Manual PDF

ECM
EC-465
< ECU DIAGNOSIS > [VK56DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
OOUTPUT SPEED SENSOR*6P0720
0720—2×TM-48
1GR INCORRECT RATIO P07310731—2×TM-53
2GR INCORRECT RATIO P07320732—2×TM-55
3GR INCORRECT RATIO P07330733—2×TM-57
4GR INCORRECT RATIO P07340734—2×TM-59
5GR INCORRECT RATIO P07350735—2×TM-61
TORQUE CONVERTER P07400740—2×TM-63
TORQUE CONVERTER P07440744—2×TM-65
PC SOLENOID A P07450745—2×TM-67
P-N POS SW/CIRCUIT P08500850—2×EC-296
INTK TIM S/CIRC-B1 P11401140—2×EC-299
INTK TIM S/CIRC-B2 P11451145—2×EC-299
CLOSED LOOP-B1 P11481148—1×EC-303
CLOSED LOOP-B2 P11681168—1×EC-303
TCS C/U FUNCTN P12111211—2—EC-304
TCS/CIRC P12121212—2—EC-305
ENG OVER TEMP P12171217—1×EC-36
CTP LEARNING-B1 P12251225—2—EC-310
CTP LEARNING-B1 P12261226—2—EC-312
COLD START CONTROL P14211421—2×EC-314
BAT CURRENT SENSOR P15501550—2—EC-316
BAT CURRENT SENSOR P15511551—2—EC-320
BAT CURRENT SENSOR P15521552—2—EC-320
BAT CURRENT SENSOR P15531553—2—EC-324
BAT CURRENT SENSOR P15541554—2—EC-328
ASCD SW P15641564—1—EC-332

(Models
with ICC) EC-336

(Models
with ASCD)
ICC COMMAND VALUE*
9P1568 1568—1—EC-340
ASCD BRAKE SW P15721572—1—EC-341

(Models
with ICC) EC-347

(Models
with ASCD)
ASCD VHL SPD SEN*
8P1574 1574—1—EC-352

(Models
with ICC)
EC-354

(Models
with ASCD)
ID DISCARD IMM-ECM P16111611—2—SEC-39
CHAIN OF ECM-IMMU P16121612—2—SEC-35
CHAIN OF IMMU-KEY P16141614—2—SEC-29
Items
(CONSULT-IIl screen terms) DTC*
1
SRT code Trip
MILReference
page
CONSULT-IIl
GST*
2ECM*3
Revision: March 2010 2008 QX56

EC-466
< ECU DIAGNOSIS >[VK56DE]
ECM
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test
Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: SRT code will not be set if the self-diagnostic result is NG.
*5: The troubleshooting for this DTC needs CONSULT-III.
*6: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*7: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to "How to Display SRT Status".
*8: 2WD models
*9: Models with ICC
*10: Models without ICC
Emission-related Diagnostic InformationINFOID:0000000001534998
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DT C number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previous ly, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in t he ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL light s up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. Fo r malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
DIFFERENCE OF KEY P16151615—2—SEC-32
INTERLOCK P17301730—1×TM-76
IINPUT CLUTCH SOL P17521752—1×TM-80
FR BRAKE SOLENOID P17571757—1×TM-82
DRCT CLUTCH SOL P17621762—1×TM-84
HLR CLUTCH SOLENOID P17671767—1×TM-86
L C BRAKE SOLENOID P17721772—1×TM-88
L C BRAKE SOLENOID P17741774—1×TM-90
BRAKE SW/CIRCUIT P18051805—2—EC-356
ETC MOT PWR-B1 P21002100—1×EC-359
ETC FUNCTION/CIRC-B1 P21012101—1×EC-362
ETC MOT PWR P21032103—1×EC-359
ETC MOT-B1 P21182118—1×EC-366
ETC ACTR-B1 P21192119—1×EC-368
APP SEN 1/CIRC P21222122—1×EC-370
APP SEN 1/CIRC P21232123—1×EC-370
APP SEN 2/CIRC P21272127—1×EC-373
APP SEN 2/CIRC P21282128—1×EC-373
TP SENSOR-B1 P21352135—1×EC-377
APP SENSOR P21382138—1×EC-381
A/F SENSOR1 (B1) P2A002A00—2×EC-385
A/F SENSOR1 (B2) P2A032A03—2×EC-385
Items
(CONSULT-IIl screen terms) DTC*
1
SRT code Trip
MILReference
page
CONSULT-IIl
GST*
2ECM*3
Revision: March 2010 2008 QX56

WHEEL HUBFAX-7
< REMOVAL AND INSTALLATION >
CEF
G H
I
J
K L
M A
B
FA X
N
O P
REMOVAL AND INSTALLATION
WHEEL HUB
Removal and InstallationINFOID:0000000001534453
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Without disassembling the hydraulic lines, remove caliper torque member bolts using power tool. Then
reposition brake caliper aside with wire. Refer to BR-31, "
Removal and Installation of Brake Caliper and
Rotor" .
NOTE:
Do not press brake pedal while brake caliper is removed.
4. Put alignment mark on disc rotor and wheel hub and bearing assembly, then remove disc rotor.
5. On 4WD model, remove cotter pin, then remove lock nut from drive shaft using power tool. Then remove end of drive shaft from wheel hub and bearing assembly. Refer to FAX-9, "
Removal and Installation" .
6. Remove wheel sensor. Refer to BRC-114, "
Removal and Installation" .
• Inspect the wheel sensor O-ring, replac e the wheel sensor assembly if damaged.
• Clean the wheel sensor hole and mounting surface with a suitable brake cleaner and clean lint-free shop rag. Be careful that dirt and debris do not enter the axle bearing area.
• Apply a coat of suitable grease to the wheel sensor O-ring and mounting hole.
CAUTION:
Do not pull on the wheel sensor harness.
7. Remove wheel hub and bearing assembly bolts using power tool.
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle Front
AWDIA0423GB
WDIA0044E
Revision: March 2010 2008 QX56

DRIVE SHAFTFAX-9
< REMOVAL AND INSTALLATION >
CEF
G H
I
J
K L
M A
B
FA X
N
O P
DRIVE SHAFT
Removal and InstallationINFOID:0000000001534458
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Remove wheel sensor harness from mount on knuckle. CAUTION:
Do not pull on wheel sensor harness.
4. Without disassembling the hydraulic lines, remove brake caliper using power tool. Reposition it aside with wire. Refer to BR-31, "
Removal and Installation of Brake Caliper and Rotor" .
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
5. Remove coil spring and shock absorber assembly using power tool. Refer to FSU-15, "
Removal and
Installation" .
6. Separate upper link ball joint stud from steering knuckle using Tool.
• Support lower link with jack.
7. Remove cotter pin, then remove drive shaft nut.
8. Remove drive shaft mounting bolts from front final drive.
9. Remove drive shaft from wheel hub and bearing assembly. CAUTION:
• When removing drive shaf t, do not apply an excessive
angle to drive shaft joint. Also be careful not to exces-
sively extend slide joint.
INSPECTION AFTER REMOVAL
• Move joint up, down, left, right, and in axial directi on. Check for any rough movement or significant loose-
ness.
• Check boot for cracks or other damage, and for grease leakage.
• If damaged, disassemble drive shaft to verify damage, and repair or replace as necessary.
1. Cotter pin 2. Drive shaft nut3. Drive shaft
LDIA0159E
Tool number : ST29020001 (J-24319-01)
LEIA0095E
RAA0030D
Revision: March 2010 2008 QX56

HOW TO USE THIS MANUALGI-5
< HOW TO USE THIS MANUAL >
C
DE
F
G H
I
J
K L
M B
GI
N
O P
SYMBOLS
1. Union bolt 2. Copper washer3. Brake hose
4. Cap 5. Bleed valve6. Sliding pin bolt
7. Piston seal 8. Piston9. Piston boot
10. Cylinder body 11. Sliding pin12. Torque member mounting bolt
13. Washer 14. Sliding pin boot15. Bushing
16. Torque member 17. Inner shim cover18. Inner shim
19. Inner pad 20. Pad retainer21. Pad wear sensor
22. Outer pad 23. Outer shim24. Outer shim cover
1: PBC (Poly Butyl Cuprysil) grease
or silicone-based grease 2: Rubber grease
: Brake fluid
Refer to GI section for additional symbol definitions.
SFIA2959E
SAIA0749E
Revision: March 2010 2008 QX56

LAN-46
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
NOTE:
CAN data of the air bag diagnosis sensor unit is not us
ed by usual service work, thus it is omitted.
Tire pressure data signal R T
Tire pressure signal R TR
Turn indicator signal TR
Buzzer output signal TR
Door lock/unlock request signal RT
Hazard request signal RT
Hazard warning lamp request signal RT
Ignition knob switch signal RT
KEY warning signal TR
LOCK warning signal TR
Panic alarm request signal RT
Power window open request signal RT
1st position switch signal R T
4th position switch signal R T
Distance to empty signal RT
Fuel level low warning signal RT
Fuel level sensor signal R T
Parking brake switch signal RT
Seat belt buckle switch signal RT
Stop lamp switch signal R T
Tow mode switch signal R T
Vehicle speed signal RRR RRR R T
RRRT
Steering angle sensor signal TR
ABS malfunction signal RT
ABS warning lamp signal RT
Brake pressure sensor signal RT
Brake warning lamp signal RT
SLIP indicator lamp signal RT
TCS malfunction signal RT
VDC malfunction signal RT
VDC OFF indicator lamp signal RRT
VDC operation signal RT
Front wiper stop position signal RT
High beam status signal R T
Hood switch signal RT
Low beam status signal R T
Rear window defogger control signal R RT
Ambient sensor signal RT
Signal name/Connecting unit
ECM
TCM
LASER ICC
ADP
AV
BCM
HVAC I-KEY M&A
STRG 4WDABS
IPDM-E
Revision: March 2010 2008 QX56

MWI-2
INFORMATION DISPLAY .........................................19
INFORMATION DISPLAY : System Diagram .........20
INFORMATION DISPLAY : System Description ....20
INFORMATION DISPLAY : Component Parts Lo-
cation ................................................................... ...
21
INFORMATION DISPLAY : Component Descrip-
tion ....................................................................... ...
21
COMPASS .........................................................22
Description ........................................................... ...22
DIAGNOSIS SYSTEM (METER) .......................24
Diagnosis Description .......................................... ...24
CONSULT-III Function (METER/M&A) ................ ...25
COMPONENT DIAGNOSIS ........................28
DTC U1000 CAN COMMUNICATION ............ ...28
DTC Logic ............................................................ ...28
Diagnosis Procedure .............................................28
DTC B2205 VEHICLE SPEED CIRCUIT ...........29
Description ........................................................... ...29
DTC Logic ...............................................................29
Diagnosis Procedure .............................................29
POWER SUPPLY AND GROUND CIRCUIT .....30
COMBINATION METER ........................................ ...30
COMBINATION METER : Diagnosis Procedure ....30
BCM (BODY CONTROL MODULE) ...................... ...30
BCM (BODY CONTROL MODULE) : Diagnosis
Procedure ...............................................................
31
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) .......................... ...
31
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .....................................................................
31
FUEL LEVEL SENSOR SIGNAL CIRCUIT .......33
Description ........................................................... ...33
Component Function Check ...................................33
Diagnosis Procedure .............................................33
Component Inspection ............................................34
OIL PRESSURE SWITCH SIGNAL CIRCUIT ...35
Description ..............................................................35
Component Function Check ...................................35
Diagnosis Procedure ..............................................35
Component Inspection ............................................35
PARKING BRAKE SWITCH SIGNAL CIR-
CUIT ...................................................................
36
Description ........................................................... ...36
Component Function Check ...................................36
Diagnosis Procedure ..............................................36
Component Inspection ............................................36
WASHER LEVEL SWITCH SIGNAL CIRCUIT ...37
Description ........................................................... ...37
Diagnosis Procedure ............................................ ...37
Component Inspection ............................................37
COMPASS .........................................................38
Wiring Diagram .................................................... ...38
CLOCK ..............................................................40
Wiring Diagram .................................................... ...40
ECU DIAGNOSIS .......................................42
COMBINATION METER ................................. ...42
Reference Value .................................................. ...42
Wiring Diagram .......................................................44
Fail Safe ..................................................................61
DTC Index ...............................................................62
BCM (BODY CONTROL MODULE) ..................64
Reference Value .................................................. ...64
Terminal Layout ......................................................64
Physical Values .......................................................64
Wiring Diagram .......................................................64
DTC Inspection Priority Chart ...............................64
DTC Index ..............................................................64
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) .................
65
Reference Value .................................................. ...65
Terminal Layout ......................................................65
Physical Values .......................................................65
Wiring Diagram .......................................................65
Fail Safe .................................................................65
DTC Index ..............................................................65
SYMPTOM DIAGNOSIS ............................66
THE FUEL GAUGE POINTER DOES NOT
MOVE .............................................................. ...
66
Description ........................................................... ...66
Diagnosis Procedure ...............................................66
THE FUEL GAUGE POINTER DOES NOT
MOVE TO "F" WHEN REFUELING ..................
67
Description ........................................................... ...67
Diagnosis Procedure ...............................................67
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN ON .................................... ...
68
Description ........................................................... ...68
Diagnosis Procedure ...............................................68
THE OIL PRESSURE WARNING LAMP
DOES NOT TURN OFF .................................. ...
69
Description ........................................................... ...69
Diagnosis Procedure ...............................................69
THE PARKING BRAKE RELEASE WARNING
CONTINUES DISPLAYING, OR DOES NOT
DISPLAY ............................................................
70
Description ........................................................... ...70
Diagnosis Procedure ...............................................70
Revision: March 2010 2008 QX56

MWI-20
< FUNCTION DIAGNOSIS >
METER SYSTEM
INFORMATION DISPLAY : System Diagram
INFOID:0000000001691278
INFORMATION DISPLAY : System DescriptionINFOID:0000000001691279
FUNCTION
The information display can indicate the following items.
• Intelligent Key operation information
• Maintenance information
• Warning/Indication messages (Door/liftgate/liftgate glass open, low fuel, low washer fluid, parking brake, A/T
oil temp)
DOOR OPEN WARNING
This warning appears when the ignition switch is ON and the front door LH, front door RH, rear door LH, rear
door RH, back door or glass hatch is opened. The BCM receives a door switch signal from the front door
switch LH, front door switch RH, rear door switch LH, rear door switch RH, back door latch and glass hatch
ajar switch. The BCM sends the door switch signal to the combination meter via CAN communication lines.
Then, when the ignition switch is turned ON, the warning message is displayed.
LOW FUEL WARNING
This warning appears when the fuel level in the fuel tank is less than approximately 11.4 (3 US gal, 2.5 Imp
gal). A variable resistor signal is supplied to the combination meter from the fuel level sensor unit to determine
the amount of fuel in the fuel tank.
LOW WINDSHIELD WASHER FLUID WARNING
This warning appears when the windshield washer fluid level is low. When the windshield washer fluid level is
low, the washer level switch provides a ground signal to the combination meter (unified meter control unit).
Once fluid is added, the message will stay on for 30 seconds and then turn off.
PARKING BRAKE INDICATOR
When the parking brake is applied, the parking brake switch provides a ground signal to the combination
meter (unified meter control unit). Then, when the igni tion switch is turned ON and vehicle speed is greater
than 7 km/h (4 MPH), the message is displayed.
Refer to Owner’s Manual for additional information display items.
AWNIA0202GB
Revision: March 2010 2008 QX56

MWI
METER SYSTEMMWI-21
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K L
M B A
O P
INFORMATION DISPLAY : Co mponent Parts LocationINFOID:0000000001696377
INFORMATION DISPLAY : Component DescriptionINFOID:0000000001691281
1. IPDM E/R E122, E124 2. Combination meter M23, M24 3. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover re-
moved)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (control unit) E1256. Oil pressure switch F4
A: Oil pan (upper)
7. A/T assembly F9 8. BCM M18, M19 (view with instrument
lower panel LH removed)
AWNIA0201ZZ
Unit Description
Combination meter Controls the information display according to the signal received from each unit.
Fuel level sensor unit Refer to MWI-33, "
Description".
BCM Transmits signals provided by various units to the combination meter via CAN communication line.
Washer level switch Transmits the washer level signal to the combination meter.
Parking brake switch Refer to MWI-36, "
Description".
Door switch Transmits the door switch signals to BCM.
Back door latch (door ajar switch) Transmits the back door switch signal to BCM.
Glass hatch ajar switch Transmits the glass hatch ajar switch signal to BCM.
TCM Transmits A/T oil temperature signal to the combination meter with CAN communication line.
Revision: March 2010 2008 QX56

MWI-42
< ECU DIAGNOSIS >
COMBINATION METER
ECU DIAGNOSIS
COMBINATION METER
Reference ValueINFOID:0000000001691309
TERMINAL LAYOUT
PHYSICAL VALUES
WKIA5724E
Te r m i -nal Wire
color Item Condition
Reference value (V)
(Approx.)
Ignition
switch Operation or condition
3 Y/L Fuel level sensor signal — —Refer to MWI-12, "
FUEL GAUGE : System
Description".
4 B/P Fuel level sensor ground ON —0
6 BR/W Generator ONGenerator voltage low
0
Generator voltage normal Battery voltage
10 L CAN-H —— —
11 P C A N - L —— —
13 P Air bag warning lamp in-
put ONAir bag warning lamp ON
4
Air bag warning lamp OFF 0
15 BR CK SUSP warning lamp
input —CK SUSP warning lamp
ON
0
CK SUSP warning lamp
OFF Battery voltage
20 B Ground —— 0
21 O/L Ignition switch ON or
START ON
— Battery voltage
23 W/L Washer fluid level switch ON Washer fluid level low
0
Washer fluid level normal Battery voltage
24 O/B Seat belt buckle switch
LH ONUnfastened (ON)
0
Fastened (OFF) Battery voltage
25 P/L Seat belt buckle switch
RH ONUnfastened (ON)
0
Fastened (OFF) Battery voltage
31 G Parking brake switch ON Parking brake applied
0
Parking brake released Battery voltage
32 P/B Brake fluid level switch ON Brake fluid level low
0
Brake fluid level normal Battery voltage
33 R/G Stop lamp switch —Brake pedal depressed
Battery voltage
Brake pedal released 0
Revision: March 2010 2008 QX56