ignition INFINITI QX56 2006 Factory Service Manual

SE-32
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
2. CHECK BCM POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK BCM GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> BCM circuit is OK. Check the driver seat control unit. GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT FUSES AND FUSIBLE LINK
Make sure any of the following fuses in the driver seat control unit and automatic drive positioner control unit
are not blown.
NOTE:
Refer to SE-11, "
Component Parts And Harness Connector Location" .
OK or NG
OK >> GO TO 5.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
65, "ELECTRICAL UNITS LOCATION" .
Connector Te r m i n a l s
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
M20 70 Ground Battery
power
supply Ignition
switch
OFF Battery voltage
M18 38 Ground
Ignition
power
supply Ignition
switchON or
START Battery voltage
11 Ground ACC or
ON
power
supply Ignition
switch
ACC or
ON Battery voltage
LIIA0995E
67 - Ground
: Continuity should exist.
LIIA0915E
Unit Power source Fuse No.
Driver seat control unit START power supply2 (10A)
Driver seat control unit and automatic
drive positionercontrol unit Battery power supply
22 (15A)
Battery power supply f (50A)

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5. CHECK DRIVER SEAT CONTROL UNIT POWER SUPPLY CIRCUIT
1. Disconnect driver seat control unit.
2. Check voltage between driver seat control unit connector and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness.
6. CHECK DRIVER SEAT CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between the driver seat control unit connector P2 terminal 32, P3 terminal 48 and ground.
OK or NG
OK >> Driver seat control unit circuit check is OK. Check the automatic drive positioner control unit. GO TO 7.
NG >> Repair or replace harness.
7. CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT POWER SUPPLY CIRCUIT
1. Disconnect automatic drive positioner control unit.
2. Check voltage between automatic drive positioner control unit connector M34 terminals 34, 39 and ground.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace harness.
Connector Terminals
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
P3 33 Ground
Battery
power
supply Ignition
switch
OFF Battery
voltage
40 Ground Battery
power
supply Ignition
switch OFF Battery
voltage
P2 6 Ground START
power
supply Ignition
switch
START Battery
voltage
PIIA4819E
32 - Ground : Continuity should exist.
48 - Ground : Continuity should exist.
PIIA4542E
ConnectorTerminals
Power
source Condition Voltage (V)
(Approx.)
(+) (-)
M34 34 Ground
Battery
power
supply Ignition
switch OFF Battery
voltage
39 Ground Battery
power
supply Ignition
switch
OFF Battery
voltage
PIIA4543E

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AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
8. CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT GROUND CIRCUIT
Check continuity between the automatic drive positioner control unit
connector M34 terminals 40, 48 and ground.
OK or NG
OK >> Automatic drive positioner control unit circuit is OK.
NG >> Repair or replace harness.
CONSULT-II Function (AUTO DRIVE POS.) EIS004XO
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL) ”.
40 - Ground
: Continuity should exist.
48 - Ground : Continuity should exist.
PIIA4544E
AUTO DRIVE POS.
diagnostic mode Description
WORK SUPPORT Supports inspections and adjustments. Commands are transmitted to the driver seat
control unit for setting the status suitable for required operation, input/output signals
are received from the driver seat control unit and received data is displayed.
SELF-DIAG RESULTS Displays driver seat control unit self-diagnosis results.
DATA MONITOR Displays driver seat control unit input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
ECU PART NUMBER Driver seat control unit part number can be read.
BBIA0369E
BCIA0029E

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AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 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-38
SEAT SLIDE
[B2112]Seat slide motor When 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-40
SEAT RECLINING
[B2113]
Seat reclining motor When 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-41
SEAT LIFTER FR
[B2114]
Seat lifting FR motor When 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-42
SEAT LIFTER RR
[B2115]
Seat lifting RR motor When 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-44
STEERING TILT
[B2116]
Steering tilt motor When 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-49
TILT SENSOR
[B2118]
Steering tilt sensor When steering tilt sensor detects 0.5V or lower, or 4.5V or higher, for
0.5 seconds or more.
SE-59
ADJ PEDAL
MOTOR
[B2117]Pedal adjust motor When 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-45
ADJ PEDAL SEN-
SOR
[B2120]Pedal adjust sensor
When pedal adjust sensor detects 0.5V or lower, or 4.5V or higher,
for 0.5 seconds or more. SE-55
DETENT SW
[B2126]Park SW With the A/T selector lever in P position (park position switch OFF), if
the vehicle speed of 7 km/h (4 MPH) or higher was input the park
position switch input system is judged malfunctioning. SE-76
UART COMM
[B2128]UART communica-
tion
Malfunction is detected in UART communication.
SE-80

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DATA MONITOR
SELECTIOM FROM MENU
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 A/T selector lever position
“OFF (P position) / ON (other than P position) ”
judged from the park position 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.

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AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 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.
The Entry/Exiting does not operate when door is opened
and closed.
(The Entry/Exiting operates with key switch) 1. Front door switch circuit inspection
SE-79
2. If all the above systems are normal, replace the BCM.BCS-20
Door mirror system does not operate (only manual oper-
ation).1.Door mirror remote control switch ground circuit inspec-
tion
SE-72
Door mirror system does not operate (only automatic
operation).1. Door mirror sensor power supply and ground circuit
inspection
SE-75
Seat system does not operate (only manual operation). 1. Power seat switch ground circuit inspection
SE-66
SymptomDiagnoses / service procedure Refer to
page
Test item Description
SEAT SLIDE The sliding motor is activated by receiving the drive signal.
PIIA0265E
35 - 6 : Continuity should exist.
42 - 4 : Continuity should exist.
35 - Ground : Continuity should not exist.
42 - Ground : Continuity should not exist.
LIIA0696E

SE-42
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
3. CHECK RECLINING MOTOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and reclining motor LH.
3. Check continuity between driver seat control unit connector P3 terminals 36, 44 and reclining motor LH connector P5 terminals
3, 4.
4. Check continuity between driver seat control unit connector P3 terminals 36, 44 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
1. Connect the driver seat control unit and reclining motor LH.
2. Check voltage between driver seat control unit connector and ground.
OK or NG
OK >> Replace reclining motor LH.
NG >> Replace driver seat control unit.
Lifting Motor (Front) Circuit InspectionEIS004XT
1. CHECK FRONT END SEAT LIFTING MECHANISM
Check the following.

Operation malfunction caused by lifter mechanism deformation, pinched harness or other foreign materi-
als

Operation malfunction caused by foreign materials adhered to the lifting motor (front) or lead screws

Operation malfunction and interference with other parts by installation
OK or NG
OK >> GO TO 2.
NG >> Repair or replace the malfunctioning part and check again. 36 - 4
: Continuity should exist.
44 - 3 : Continuity should exist.
36 - Ground : Continuity should not exist.
44 - Ground : Continuity should not exist.
LIIA0697E
ConnectorTerminals
ConditionVoltage (V)
(Approx.)
(+) (-)
P3 36
Ground Reclining switch ON
(FORWARD operation)
Battery voltage
Other than above 0
44 Reclining switch ON
(BACKWARD operation)
Battery voltage
Other than above 0
PIIA4802E

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2. CHECK FUNCTION
With CONSULT-II
Check operation with “SEAT LIFTER FR” in ACTIVE TEST.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Lifting motor (front) circuit is OK.
NG >> GO TO 3.
3. CHECK LIFTING MOTOR (FRONT) CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (front).
3. Check continuity between driver seat control unit connector P3 terminals 37, 45 and lifting motor (front) connector P6 terminals
4, 6.
4. Check continuity between driver seat control unit connector P3 terminals 37, 45 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
1. Connect the driver seat control unit and lifting motor (front).
2. Check voltage between driver seat control unit connector and ground.
OK or NG
OK >> Replace lifting motor (front). Refer to SE-91, "FRONT SEAT" .
NG >> Replace driver seat control unit. Refer to SE-91, "
FRONT SEAT" .
Test itemDescription
SEAT LIFTER FR The lifting motor (front) is activated by receiving the drive
signal.
PIIA0271E
37 - 6
: Continuity should exist.
45 - 4 : Continuity should exist.
37 - Ground : Continuity should not exist.
45 - Ground : Continuity should not exist.
LIIA0698E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
P3 37
Ground Lifting switch (front) ON
(DOWN operation)
Battery voltage
Other than above 0
45 Llifting switch (front) ON
(UP operation)
Battery voltage
Other than above 0
PIIA4805E

SE-44
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
Lifting Motor (Rear) Circuit InspectionEIS004XU
1. CHECK REAR SEAT LIFTING MECHANISM
Check the following.

Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign mate-
rials

Operation malfunction caused by foreign materials adhered to the lifting motor (rear) or lead screws

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 LIFTER RR” in ACTIVE TEST.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Lifting motor (rear) circuit is OK.
NG >> GO TO 3.
3. CHECK LIFTING MOTOR (REAR) CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (rear).
3. Check continuity between driver seat control unit connector P3 terminals 38, 39 and lifting motor (rear) connector P7 terminals
4, 6.
4. Check continuity between driver seat control unit P3 terminals 38, 39 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
Test item Description
SEAT LIFTER RR The lifting motor (rear) is activated by receiving the drive
signal.
PIIA0274E
38 - 6
: Continuity should exist.
39 - 4 : Continuity should exist.
38 - Ground : Continuity should not exist.
39 - Ground : Continuity should not exist.
LIIA0699E

SE-46
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
3. CHECK PEDAL ADJUSTING MOTOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and pedal adjusting motor.
3. Check continuity between automatic drive positioner control unit connector M34 terminals 37, 45 and pedal adjusting motor con-
nector E109 terminals 1, 2.
4. Check continuity between automatic drive positioner control unit connector M34 terminals 37, 45 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT OUTPUT SIGNAL
1. Connect the automatic drive positioner control unit and pedal adjusting motor.
2. Check voltage between automatic drive positioner control unit connector and ground.
OK or NG
OK >> Replace pedal adjusting motor.
NG >> Replace automatic drive positioner control unit.
Mirror Motor LH Circuit CheckEIS004XW
1. CHECK DOOR MIRROR LH MECHANISM
Check the following items.
Operation malfunction caused by a foreign object caught in door mirror face edge.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace the malfunctioning parts, and check the symptom again. 37 - 1
: Continuity should exist.
45 - 2 : Continuity should exist.
37 - Ground : Continuity should not exist.
45 - Ground : Continuity should not exist.
LIIA1755E
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 37
Ground Pedal adjusting switch
ON
(FORWARD operation)
Battery voltage
Other than above 0
45 Pedal adjusting switch
ON
(BACKWARD opera-
tion)
Battery voltage
Other than above 0
PIIA4806E