sensor INFINITI QX4 2005 Factory Service Manual

SE-2Revision: October 20052005 QX56 Lifting Switch (Front) Circuit Inspection .................. 69
Lifting Switch (Rear) Circuit Inspection ................... 70
Power Seat Switch Ground Inspection ................... 71
Pedal Adjusting Switch Circuit Inspection .............. 72
Door Mirror Remote Control Switch (Changeover
Switch) Circuit Check ............................................. 74
Door Mirror Remote Control Switch (Mirror Switch)
Circuit Check .......................................................... 75
Door Mirror Remote Control Switch Ground Circuit
Inspection ............................................................... 77
Seat Memory Switch Circuit Inspection .................. 78
Seat Memory Indicator Lamp Circuit Inspection ..... 79
Door Mirror Sensor Power Supply and Ground Cir-
cuit inspection ......................................................... 81
A/T Device (Detent Switch) Circuit Inspection ........ 82
Steering Wheel Tilt Switch Circuit Inspection ......... 83
Front Door Switch LH Circuit Inspection ................. 84
UART Communication Line Circuit Inspection ........ 86
Removal and Installation ........................................ 88
POWER SEAT ........................................................... 89
Wiring Diagram — SEAT — for Passenger Seat .... 89HEATED SEAT ..........................................................90
Description ..............................................................90
Schematic ...............................................................91
Wiring Diagram — HSEAT — .................................92
FRONT SEAT ............................................................97
Removal and Installation .........................................97
REMOVAL .......................................................... 100
INSTALLATION .................................................. 100
Disassembly and Assembly .................................. 100
SEATBACK TRIM AND PAD ............................. 100
REMOVAL OF SEATBACK ASSEMBLY ........... 102
INSTALLATION OF SEATBACK ASSEMBLY ... 102
SEAT CUSHION TRIM AND PAD (DRIVER) OR
SEAT CUSHION ASSEMBLY (PASSENGER) ... 102
REAR SEAT ............................................................. 104
Removal and Installation ....................................... 104
SECOND ROW OUTBOARD ............................ 104
SECOND ROW CENTER .................................. 104
THIRD ROW ...................................................... 104
Disassembly and Assembly .................................. 106

SE-30
AUTOMATIC DRIVE POSITIONER
Revision: October 20052005 QX56
Terminals and Reference Values for BCMEIS004XJ
Terminals and Reference Values for Driver Seat Control UnitEIS004XK
TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
11 O Ignition switch (ACC or ON) Ignition switch (ACC or ON position) Battery voltage
38 W/L Ignition switch (ON or START)Ignition switch (ON or START posi-
tion)Battery voltage
39 L CAN-H — —
40 P CAN-L — —
47 SB Front door switch LH ON (Open) → OFF (Closed) 0 → Battery voltage
67 B Ground — 0
70 W/B Battery power supply — Battery voltage
TERMINALWIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
1LUART LINE (RX)Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
3 L CAN-H — —
6 O Ignition switch (START) Ignition switch (START position) Battery voltage
9 L/R Reclining motor sensor signalON (seat reclining motor opera-
tion)
Other than above 0 or 5
10 W Rear lifting motor sensor signalON (rear lifting motor operation)
Other than above 0 or 5
11 R / BSliding switch BACKWARD sig-
nalON (seat sliding switch BACK-
WARD operation)0
Other than above Battery voltage
12 O/BReclining switch BACKWARD
signalON (seat reclining switch BACK-
WARD operation)0
Other than above Battery voltage
13 L/B Front lifting switch DOWN signalON (front lifting switch DOWN
operation)0
Other than above Battery voltage
PIIA4813E
SIIA0692J
SIIA0693J

AUTOMATIC DRIVE POSITIONER
SE-31
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: October 20052005 QX56
14 G/W Rear lifting switch DOWN signalON (rear lifting switch DOWN
operation)0
Other than above Battery voltage
15 L/YPedal adjusting switch BACK-
WARD signalON (pedal adjusting switch BACK-
WARD operation) 0
Other than above Battery voltage
16 W Seat sensor power Ignition switch ON 5
17 W UART LINE (TX)Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
19 P CAN-L — —
21 L/R A/T device (detent switch) signalSelector lever in P position 0
Selector lever other than P posi-
tion with ignition key in ignition cyl-
inderBattery voltage
24 Y/G Seat sliding motor sensor signalON (seat sliding motor operation)
Other than above 0 or 5
25 LG Front lifting motor sensor signalON (front lifting motor operation)
Other than above. 0 or 5
26 P/BSeat sliding switch FORWARD
signalON (seat sliding switch FOR-
WARD operation)0
Other than above Battery voltage
27 G/BSeat reclining switch FOR-
WARD signalON (seat reclining switch FOR-
WARD operation)0
Other than above Battery voltage
28 Y/B Front lifting switch UP signalON (front lifting switch UP opera-
tion)0
Other than above Battery voltage
29 R/W Rear lifting switch UP signalON (rear lifting switch UP opera-
tion)0
Other than above Battery voltage
30 RPedal adjusting switch FOR-
WARD signalON (pedal adjusting switch FOR-
WARD operation)0
Other than above Battery voltage TERMINALWIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
PIIA4814E
PIIA3277E
SIIA0691J

SE-32
AUTOMATIC DRIVE POSITIONER
Revision: October 20052005 QX56
Terminals and Reference Values for Automatic Drive Positioner Control UnitEIS004XL
31 L/Y Sensor ground — 0
32 B Ground — 0
33 L/B Battery power supply — Battery voltage
35 V/WSliding motor FORWARD out-
put signalSliding switch FORWARD opera-
tion (Motor operated)Battery voltage
Other than above 0
36 Y/GReclining motor FORWARD out-
put signalReclining switch FORWARD oper-
ation (Motor operated)Battery voltage
Other than above 0
37 BRFront lifting motor DOWN output
signalFront lifting switch DOWN opera-
tion (Motor operated)Battery voltage
Other than above 0
38 B/WRear lifting motor UP output sig-
nalRear end lifting switch UP opera-
tion (Motor operated)Battery voltage
Other than above 0
39 YRear lifting motor DOWN output
signalRear end lifting switch DOWN
operation (Motor operated)Battery voltage
Other than above 0
40 Y/R Battery power supply — Battery voltage
42 O/BSliding motor BACKWARD out-
put signalSliding switch BACKWARD oper-
ation (Motor operated)Battery voltage
Other than above 0
44 Y/RReclining motor BACKWARD
output signalReclining switch BACKWARD
operation (Motor operated)Battery voltage
Other than above 0
45 GRFront lifting motor UP output sig-
nalFront lifting switch UP operation
(Motor operated)Battery voltage
Other than above 0
48 B/W Ground — 0 TERMINALWIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
1 W/G ADP steering switch TILT UPADP steering switch in UP position 0
Other than above 5
2 LG Changeover switch RH signalChangeover switch in RH position 0
Other than above 5
3 Y/B Mirror switch UP signalMirror switch in UP position 0
Other than above 5
4 V/W Mirror switch LEFT signalMirror switch in LEFT position 0
Other than above 5
5R/BMirror sensor (RH vertical) sig-
nalMirror motor RH is operated UP or
DOWNChanges between 3.4 (close to
peak) 0.6 (close to valley)
6L/YMirror sensor (LH vertical) sig-
nalMirror motor LH is operated UP or
DOWNChanges between 3.4 (close to
peak) 0.6 (close to valley)
7 Y/R Tilt sensor inputTilt position TOP 2
Tilt position BOTTOM 4

AUTOMATIC DRIVE POSITIONER
SE-33
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: October 20052005 QX56
8 BR/Y Pedal sensor input signalPedal position front end 0.5
Pedal position rear end 4.5
9 LG/B Seat memory switch 1 signalMemory switch 1 ON 0
Memory switch 1 OFF 5
10 L UART LINE (TX)Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation)
12 PSeat memory switch indictor 1
signalMemory switch 1 ON 0
Memory switch 1 OFF Battery voltage
13 Y/GSeat memory switch indictor 2
signalMemory switch 2 ON 0
Memory switch 2 OFF Battery voltage
14 GR/R Mirror motor RH UP signalMirror motor RH is operated UP 1.5 - Battery voltage
Other than above 0
15 V/R Mirror motor RH LEFT signalMirror motor RH is operated LEFT 1.5 - Battery voltage
Other than above 0
16 OMirror motor LH DOWN signalMirror motor LH is operated DOWN 1.5 - Battery voltage
Other than above 0
Mirror motor LH RIGHT signalMirror motor LH is operated RIGHT 1.5 - Battery voltage
Other than above 0
17 G/BADP steering switch TILT
DOWNADP steering switch in DOWN posi-
tion0
Other than above 5
18 BR/W Changeover switch LH signalChangeover switch in LH position 0
Other than above 5
19 SB Mirror switch DOWN signalMirror switch in DOWN position 0
Other than above 5
20 GR Mirror switch RIGHT signalMirror switch in RIGHT position 0
Other than above 5
21 L/WMirror sensor (RH horizontal)
signalMirror motor RH is operated LEFT
or RIGHTChanges between 3.4 (close to left
edge) 0.6 (close to right edge)
22 GMirror sensor (LH horizontal)
signalMirror motor LH is operated LEFT
or RIGHTChanges between 3.4 (close to left
edge) 0.6 (close to right edge)
24 G/O Seat memory set switch signalSet switch 1 ON 0
Set switch 1 OFF 5
25 P/L Seat memory switch 2 signalMemory switch 2 ON 0
Memory switch 2 OFF 5
26 W UART LINE (RX)Pedal adjusting switch ON (FOR-
WARD or BACKWARD operation) TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)
PIIA4813E
PIIA4814E

SE-34
AUTOMATIC DRIVE POSITIONER
Revision: October 20052005 QX56
Work Flow EIS004XM
1. Check the symptom and customer's requests.
2. Understand the system description. Refer to SE-12, "
System Description" .
3. Perform the preliminary check. Refer to SE-35, "
Preliminary Check" .
4. Check the self-diagnosis, results using CONSULT-II. Refer to SE-38, "
CONSULT-II Function (AUTO
DRIVE POS.)" .
5. Repair or replace depending on the self-diagnostic results.
6. Based on the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SE-42,
"Symptom Chart" .
7. Does the automatic drive positioner system operate normally?
If it is normal, GO TO 8.
If it is not normal, GO TO 3.
8. Inspection End.
30 YMirror motor RH DOWN signalMirror motor RH is operated DOWN 1.5 - Battery voltage
Other than above 0
Mirror motor RH RIGHT signalMirror motor RH is operated RIGHT 1.5 - Battery voltage
Other than above 0
31 R Mirror motor LH UP signalMirror motor LH is operated UP 1.5 - Battery voltage
Other than above 0
32 BR Mirror motor LH LEFT signalMirror motor LH is operated LEFT 1.5 - Battery voltage
Other than above 0
33 W/L Sensor power supply — 5
34 Y/R Battery power supply — Battery voltage
35 R Tilt motor UP signalADP steering switch in UP position Battery voltage
Other than above 0
37 GPedal adjust motor FORWARD
signalPedal adjust motor FORWARD
operation (Motor operated)Battery voltage
Other than above 0
39 L/B Battery power supply — Battery voltage
40 B/W Ground — 0
41 W/G Sensor ground — 0
42 V Tilt motor DOWN signalADP steering switch in DOWN posi-
tionBattery voltage
Other than above 0
45 RPedal adjust motor BACK-
WARD signalPedal adjust motor BACKWARD
operation (Motor operated)Battery voltage
Other than above 0
48 B Ground — 0 TERMINAL WIRE
COLORITEM CONDITIONVOLTAGE (V)
(Approx.)

SE-40
AUTOMATIC DRIVE POSITIONER
Revision: October 20052005 QX56
SELF-DIAGNOSIS RESULTS
DISPLAY ITEM LIST
NOTE:

If park switch error is detected, manual adjustable pedal operation cannot be performed when ignition
switch turns ON.

The displays of CAN communication and detection switch display error detecting condition from memory
erase to the present on “TIME”.
–If error is detected in the past and present error is detected, “CRNT” is displayed.
–If error is detected in the past and present error is not detected, “PAST” is displayed.
–If error has never been detected, nothing is displayed on “TIME”.

Any items other than CAN communication and park switch count error detection frequency occurred after
erase history to “1-127”.
–If error was detected in the past, error detection frequency from memory erase to the present is displayed
on “TIME”.
–If error has never been detected, nothing is displayed on “TIME”.
–Can clear the detected memory.
Normal: Clear memory in normal condition, history is erased and nothing is displayed on “TIME”.
Error: Clear memory in error condition, error is detected again and “1” is displayed on “TIME”.
CONSULT-II display Item Malfunction is detected when...Reference
page
CAN COMM CIRC
[U1000]CAN communication Malfunction is detected in CAN communication. SE-42
SEAT SLIDE
[B2112]Seat slide motorWhen any manual and automatic operations are not performed, if
any motor operations of seat slide is detected for 0.1 second or
more, status is judged “Output error”.SE-44
SEAT RECLINING
[B2113]Seat reclining motorWhen any manual and automatic operations are not performed, if
any motor operations of seat reclining is detected for 0.1 second or
more, status is judged “Output error”.SE-45
SEAT LIFTER FR
[B2114]Seat lifting FR motorWhen any manual and automatic operations are not performed, if
any motor operations of seat lifting FR is detected for 0.1 second or
more, status is judged “Output error”.SE-46
SEAT LIFTER RR
[B2115]Seat lifting RR motorWhen any manual and automatic operations are not performed, if
any motor operations of seat lifting RR is detected for 0.1 second or
more, status is judged “Output error”.SE-48
STEERING TILT
[B2116]Steering tilt motorWhen any manual and automatic operations are not performed, if
any motor operations of tilt is detected for 0.1 second or more, status
is judged “Output error”.SE-53
TILT SENSOR
[B2118]Steering tilt sensorWhen steering tilt sensor detects 0.5V or lower, or 4.5V or higher, for
0.5 seconds or more.SE-64
ADJ PEDAL
MOTOR
[B2117]Pedal adjust motorWhen any manual and automatic operations are not performed, if
motor operations of seat pedal is detected for 0.1 second or more,
status is judged “Output error”.SE-49
ADJ PEDAL SEN-
SOR
[B2120]Pedal adjust sensorWhen pedal adjust sensor detects 0.5V or lower, or 4.5V or higher,
for 0.5 seconds or more.SE-59
DETENT SW
[B2126]Park SWWith the A/T shift lever in P position (Park switch OFF), if the vehicle
speed of 7 km/h (4 MPH) or higher was input the park switch input
system is judged malfunctioning.SE-82
UART COMM
[B2128]UART communica-
tionMalfunction is detected in UART communication.SE-86

AUTOMATIC DRIVE POSITIONER
SE-41
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: October 20052005 QX56
DATA MONITOR
SELECTIOM FROM MENU
ACTIVE TEST
CAUTION:
During vehicle driving, do not perform active test.
Monitor item [OPERATION or UNIT] Contents
SLIDE SW–FR “ON/OFF” ON/OFF status judged from the sliding switch (FR) signal is displayed.
SLIDE SW–RR “ON/OFF” ON/OFF status judged from the sliding switch (RR) signal is displayed.
RECLN SW–FR “ON/OFF” ON/OFF status judged from the reclining switch (FR) signal is displayed.
RECLN SW–RR “ON/OFF” ON/OFF status judged from the reclining switch (RR) signal is displayed.
LIFT FR SW–UP “ON/OFF” ON/OFF status judged from the FR lifter switch (UP) signal is displayed.
LIFT FR SW–DN “ON/OFF” ON/OFF status judged from the FR lifter switch (DOWN) signal is displayed.
LIFT RR SW–UP “ON/OFF” ON/OFF status judged from the RR lifter switch (UP) signal is displayed.
LIFT RR SW–DN “ON/OFF” ON/OFF status judged from the RR lifter switch (DOWN) signal is displayed.
MIR CON SW–UP “ON/OFF”ON/OFF status judged from the door mirror remote control switch (UP) signal is
displayed.
MIR CON SW–DN “ON/OFF”ON/OFF status judged from the door mirror remote control switch (DOWN) signal
is displayed.
MIR CON SW–RH “ON/OFF”ON/OFF status judged from the door mirror remote control switch (RIGHT) signal
is displayed.
MIR CON SW–LH “ON/OFF”ON/OFF status judged from the door mirror remote control switch (LEFT) signal is
displayed.
MIR CHNG SW–R “ON/OFF”ON/OFF status judged from the door mirror remote control switch (switching to
RIGHT) signal is displayed.
MIR CHNG SW–L “ON/OFF”ON/OFF status judged from the door mirror remote control switch (switching to
LEFT) signal is displayed.
SET SW “ON/OFF” ON/OFF status judged from the setting switch signal is displayed.
TILT SW-UP “ON/OFF” ON/OFF status judged from the tilt adjusting switch (UP) signal is displayed.
PEDAL SW-FR “ON/OFF” ON/OFF status judged from the pedal adjusting switch (FR) signal is displayed.
PEDAL SW-RR “ON/OFF” ON/OFF status judged from the pedal adjusting switch (RR) signal is displayed.
MEMORY SW1 “ON/OFF” ON/OFF status judged from the seat memory switch 1 signal is displayed.
MEMORY SW2 “ON/OFF” ON/OFF status judged from the seat memory switch 2 signal is displayed.
DETENT SW “ON/OFF”The selector lever position “OFF (P position) / ON (other than P position)” judged
from the park switch signal is displayed.
STARTER SW “ON/OFF”Ignition key switch ON (START, ON) /OFF (ignition switch IGN, ACC, or OFF)
status judged from the ignition switch signal is displayed.
SLIDE PULSE —Value (32768) when battery connects is as standard. If it moves BACKWARD, the
value increases. If it moves FORWARD, the value decreases.
RECLN PULSE —Value (32768) when battery connects is as standard. If it moves BACKWARD, the
value increases. If it moves FORWARD, the value decreases.
LIFT FR PULSE —Value (32768) when battery connects is as standard. If it moves DOWN, the value
increases. If it moves UP, the value decreases.
LIFT RR PULSE —Value (32768) when battery connects is as standard. If it moves DOWN, the value
increases. If it moves UP, the value decreases.
MIR/SEN RH R–L “V” Voltage output from RH door mirror sensor (LH/RH) is displayed.
MIR/SEN RH U–D “V” Voltage output from RH door mirror sensor (UP/DOWN) is displayed.
MIR/SEN LH R–L “V” Voltage output from LH door mirror sensor (LH/RH) is displayed.
MIR/SEN LH U–D “V” Voltage output from LH door mirror sensor (UP/DOWN) is displayed.
PEDAL SEN “V”The pedal position (voltage) judged from the pedal adjust sensor signal is dis-
played.

AUTOMATIC DRIVE POSITIONER
SE-43
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: October 20052005 QX56
A part of pedal adjust and door mirror does not operate
(both automatically and manually).1. Pedal adjusting motor circuit inspectionSE-492. Mirror motor LH circuit check SE-50
3. Mirror motor RH circuit check SE-52
4. If the above systems are normal, replace the automatic
drive positioner control unit.SE-11
A part of seat system does not operate (only automatic
operation).1. Sliding sensor circuit inspectionSE-55
2. Reclining sensor circuit inspectionSE-56
3. Lifting sensor (front) circuit inspectionSE-57
4. Lifting sensor (rear) circuit inspectionSE-58
5. If the above systems are normal, replace the driver seat
control unit.SE-11
A part of door mirror system does not operate (only
automatic operation).1. Mirror sensor LH circuit checkSE-602. Mirror sensor RH circuit checkSE-62
3. If the above systems are normal, replace the automatic
drive positioner control unit.SE-11
All of the automatic operations do not operate.1. Park switch circuit inspectionSE-82
2. UART communication line circuit inspectionSE-86
3. Pedal adjusting sensor circuit inspectionSE-59
4. Steering wheel tilt sensor circuit inspectionSE-64
4. If all the above systems are normal, replace the auto-
matic drive positioner control unit.SE-11
A part of seat system does not operate (only manual
operation).1. Sliding switch circuit inspectionSE-66
2. Reclining switch circuit inspectionSE-67
3. Lifting switch (front) circuit inspectionSE-69
4. Lifting switch (rear) circuit inspectionSE-70
5. If the above systems are normal, replace the driver seat
control unit.SE-11
A part of pedal adjust and door mirror does not operate
(only manual operation).1. Pedal adjusting switch circuit inspection SE-72
2. Door mirror remote control switch (change over switch)
circuit inspection SE-74
3. Door mirror remote control switch (mirror switch) switch-
ing circuit inspection SE-75
4. If the above systems are normal, replace the automatic
drive positioner control unit.SE-11
Only memory switch operation.1. Seat memory switch circuit inspectionSE-782. If the above systems are normal, replace the driver seat
control unit.SE-11
Seat memory indicator lamps 1 and 2 do not illuminate.1. Seat memory indicator lamp circuit inspectionSE-792. If all the above systems are normal, replace the driver
seat control unit.SE-11
The Entry/Exiting does not operate when door is opened
and closed.
(The Entry/Exiting operates with key switch)1. Front door switch circuit inspectionSE-84
2. If all the above systems are normal, replace the BCM.BCS-20
Only door mirror system does not operate (only manual
operation).1.Door mirror remote control switch ground circuit inspec-
tionSE-77
SymptomDiagnoses / service procedure Refer to
page

SE-44
AUTOMATIC DRIVE POSITIONER
Revision: October 20052005 QX56
Sliding Motor Circuit InspectionEIS004XR
1. CHECK SEAT SLIDING MECHANISM
Check the following.

Operation malfunction caused by sliding rail deformation, pinched harness or other foreign materials

Operation malfunction caused by foreign materials adhered to the sliding motor LH or sliding rail connec-
tor rod

Operation malfunction and interference with other parts by poor installation
OK or NG
OK >> GO TO 2.
NG >> Repair or replace the malfunctioning part and check again.
2. CHECK FUNCTION
With CONSULT-II
Check operation with “SEAT SLIDE” in ACTIVE TEST.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Sliding motor circuit is OK.
NG >> GO TO 3.
3. CHECK SLIDING MOTOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and sliding motor LH.
3. Check continuity between driver seat control unit connector P3
terminals 35, 42 and sliding motor connector P4 terminals 4, 6.
4. Check continuity between driver seat control unit connector P3
terminals 35, 42 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
Only door mirror system does not operate (only auto-
matic operation).1. Door mirror sensor power supply and ground circuit
inspectionSE-81
Only seat system does not operate (only manual opera-
tion).1. Power seat switch ground circuit inspectionSE-71
SymptomDiagnoses / service procedure Refer to
page
Test item Description
SEAT SLIDE The sliding motor is activated by receiving the drive signal.
PIIA0265E
35 (V/W) - 6 (V/W) : Continuity should exist.
42 (O/B) - 4 (O/B) : Continuity should exist.
35 (V/W) - Ground : Continuity should not exist.
42 (O/B) - Ground : Continuity should not exist.
LIIA0696E