INFINITI QX56 2004 Factory Service Manual

SE-82
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
3. CHECK DETENTION SWITCH
Check continuity between A/T device (DETENT switch) as follows.
OK or NG
OK >> A/T device is OK.
NG >> Replace A/T device.
Steering Wheel Tilt Switch Circuit InspectionEIS0038N
1. CHECK FUNCTION
With CONSULT-II
With “TILT SW-UP, TILT SW-DOWN” on the DATA MONITOR, oper-
ate the ADP steering wheel tilt switch to check ON/OFF operation.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner control unit
connector and ground.
OK or NG
OK >> ADP steering wheel tilt switch circuit is OK.
NG >> GO TO 2.
Terminals
Condition Continuity
(+) (–)
56P position Continuity should not exist.
Other than
P positionContinuity should exist.
LIIA1491E
Monitor item [OPERATION or
UNIT]Contents
TILT SW-UP “ON/OFF”Operation (ON)/open (OFF) status
judged from the tilt switch (FR) signal is
displayed.
TILT SW-DOWN “ON/OFF”Operation (ON)/open (OFF) status
judged from the tilt switch (RR) signal is
displayed.
PIIA0315E
ConnectorTe r m i n a l s
(Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M331 (W/G)
GroundTilt switch ON (UP
operation)0
Other than above 5
17 (G/B)Tilt switch ON (DOWN
operation)0
Other than above 5
LIIA0491E

AUTOMATIC DRIVE POSITIONER
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Revision: August 20072004 QX56
2. CHECK ADP STEERING WHEEL TILT SWITCH HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit connector and ADP steering wheel tilt switch.
2. Check continuity between automatic drive positioner control unit
connector M33 terminals 1, 17 and ADP steering wheel tilt
switch connector M16 terminals 2, 3.
3. Check continuity between automatic drive positioner control unit
connector M33 terminals 1, 17 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK ADP STEERING WHEEL TILT SWITCH
Check continuity between ADP steering wheel tilt switch as follows.
OK or NG
OK >> GO TO 4.
NG >> Replace ADP steering wheel tilt switch.
4. CHECK ADP STEERING WHEEL TILT SWITCH GROUND CIRCUIT
Check continuity between ADP steering wheel tilt switch connector
M16 terminal 1 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace or replace harness.1 (W/G) - 2 (W/G) : Continuity should exist.
17 (G/B) - 3 (G/B) : Continuity should exist.
1 (W/G) - Ground : Continuity should not exist.
17 (G/B) - Ground : Continuity should not exist.
LIIA1434E
Te r m i n a l s
Condition Continuity
(+) (–)
2
1Tilt switch ON (UP operation) Yes
Other than above No
3Tilt switch ON (DOWN operation) Yes
Other than above No
LIIA1435E
1 (B) - Ground : Continuity should exist.
LIIA0490E

SE-84
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
Front Door Switch LH Circuit InspectionEIS0 02 ZA
1. CHECK FUNCTION
With CONSULT-II
Touch "BCM" with “DOOR SW DR” on the DATA MONITOR, check
ON/OFF operation when the front door is open and closed.
*:Refer to SE-40, "DATA MONITOR" .
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Front door switch LH circuit is OK.
NG >> GO TO 2.
2. CHECK FRONT DOOR SWITCH LH
1. Turn ignition switch OFF.
2. Disconnect front door switch.
3. Check continuity between front door switch LH terminal 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace front door switch LH.
3. CHECK HARNESS CONTINUITY
1. Disconnect BCM.
2. Check continuity between BCM connector M19 terminal 47 and
front door switch LH connector B8 terminal 2.
3. Check continuity between BCM connector M19 terminal 47 and
ground.
OK or NG
OK >> Front door switch LH circuit is OK.
NG >> Repair or replace harness.
Monitor item [OPERA-
TION or UNIT]Contents
DOOR SW
DR*“ON/
OFF”Door open (ON)/door closed (OFF) status judged from
the front door switch is displayed.
PIIA0291E
Terminals
Condition Continuity
(+) (–)
2GroundWith the front door switch LH pressed No
With the front door switch LH released Yes
LIIA1493E
47 (SB) - 2 (SB) : Continuity should exist.
47 (SB) - Ground : Continuity should not exist.
LIIA1027E

AUTOMATIC DRIVE POSITIONER
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Revision: August 20072004 QX56
UART Communication Line Circuit InspectionEIS002ZB
1. CHECK UART LINE INPUT/OUTPUT SIGNAL 1
1. Turn ignition switch OFF.
2. Check signal between driver seat control unit connector and
ground, with oscilloscope.
OK or NG
OK >> GO TO 2.
NG >> Check the following.

When voltage wave form does not appear with a constant voltage (approx. 5V), replace driver
seat control unit.

When voltage wave form does not appear with a constant voltage (approx. 0V), replace auto-
matic driver seat control unit.
2. CHECK UART LINE INPUT/OUTPUT SIGNAL 2
Check signal between automatic drive positioner control unit con-
nector ground, with oscilloscope.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

When voltage wave form does not appear with a constant voltage (approx. 5V), replace auto-
matic drive positioner control unit.

When voltage wave form does not appear with a constant voltage (approx. 0V), replace driver
seat control unit.
ConnectorTe r m i n a l s
(Wire color)
Condition Signal
(+) (–)
P2 17 (W) GroundPedal
adjusting
switch ON
(FOR-
WARD or
BACK-
WARD
operation)
PIIA4599E
PIIA4814E
ConnectorTe r m i n a l s
(Wire color)
Condition Signal
(+) (–)
M33 10 (L) GroundPedal
adjusting
switch ON
(FOR-
WARD or
BACK-
WARD
operation)
PIIA4816E
PIIA4813E

SE-86
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
3. CHECK UART LINE HARNESS
1. Disconnect driver seat control unit and automatic drive posi-
tioner control unit.
2. Check continuity between driver seat control unit connector P2
terminals 1, 17, and automatic drive positioner connector M33
terminals 10, 26.
3. Check continuity between driver seat control unit connector P2
terminals 1, 17 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK DRIVER SEAT CONTROL UNIT
Does the automatic drive positioner operate when the driver seat control unit is exchanged?
OK or NG
OK >> Replace driver seat control unit.
NG >> Replace automatic drive positioner control unit.1 (L) - 10 (L) : Continuity should exist.
17 (W) - 26 (W) : Continuity should exist.
1 (L) - Ground : Continuity should not exist.
17 (W) - Ground : Continuity should not exist.
PIIA4598E

AUTOMATIC DRIVE POSITIONER
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Revision: August 20072004 QX56
Removal and InstallationEIS0 02 Z C
Refer to ACC-2, "ACCELERATOR CONTROL SYSTEM" and BR-6, "BRAKE PEDAL" .

SE-88
POWER SEAT
Revision: August 20072004 QX56
POWER SEATPFP:87016
Wiring Diagram — SEAT — for Passenger SeatEIS003EQ
WIWA0638E

HEATED SEAT
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Revision: August 20072004 QX56
H E AT E D S E ATPFP:87335
Description EIS002ZF

When handling seat, be extremely careful not to scratch heating unit.

To replace heating unit, seat trim and pad should be separated for front seat cushion LH. For seatback
and front seat cushion RH, complete cushion or seatback assembly must be replaced.

Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trim.
WIIA0031E

SE-90
HEATED SEAT
Revision: August 20072004 QX56
SchematicEIS002ZG
WIWA1107E

HEATED SEAT
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Revision: August 20072004 QX56
Wiring Diagram — HSEAT —EIS0 02 Z H
LIWA0443E