seat INFINITI QX56 2004 Factory Service Manual

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AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
2. CHECK SEAT MEMORY SWITCH
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Operate the setting switch and seat memory switch.
4. Check continuity between seat memory switch as follows.
OK or NG
OK >> GO TO 3.
NG >> Replace seat memory switch.
3. CHECK HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit.
2. Check continuity between automatic drive positioner control unit
connector M33 terminals 9, 24, 25 and seat memory switch con-
nector D5 terminals 1, 2, 3.
3. Check continuity between automatic drive positioner control unit
connector M41 terminals 9, 24, 25 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
4. CHECK SEAT MEMORY SWITCH GROUND CIRCUIT
Check continuity between seat memory switch D5 terminal 4 and
ground.
OK or NG
OK >> Replace automatic drive positioner control unit.
NG >> Repair or replace harness.
Terminal
Condition Continuity
(+) (–)
1
4Memory switch 1: ON Yes
Memory switch 1: OFF No
2Memory switch 2: ON Yes
Memory switch 2: OFF No
3Set switch: ON Yes
Set switch: OFF No
LIIA1020E
9 (LG/B) - 1 (LG/B) : Continuity should exist.
24 (G/O) - 3 (G/O) : Continuity should exist.
25 (P/L) - 2 (P/L) : Continuity should exist.
9 (LG/B) - Ground : Continuity should not exist.
24 (G/O) - Ground : Continuity should not exist.
25 (P/L) - Ground : Continuity should not exist.
PIIA4576E
4 (B) - Ground : Continuity should exist.
PIIA4821E

AUTOMATIC DRIVE POSITIONER
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Seat Memory Indicator Lamp Circuit InspectionEIS002Z7
1. CHECK FUNCTION
With CONSULT-II
With “MEMORY SW INDCTR” in ACTIVE TEST, check operation.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> Seat memory switch indicator lamp circuit is OK.
NG >> GO TO 2.
2. CHECK SEAT MEMORY SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect seat memory switch.
3. Check voltage between seat memory switch connector D5 ter-
minal 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3. CHECK SEAT MEMORY INDICATOR CIRCUIT HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit.
3. Check continuity between automatic drive positioner control unit
connector M33 terminals 12, 13 and seat memory switch con-
nector D5 terminals 6, 7.
4. Check continuity between automatic drive positioner control unit
connector M33 terminals 12, 13 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness.
Test item Description
MEMORY SW
INDCTRThe memory switch indicator is lit by receiving the drive signal.
PIIA0319E
5 (Y/R) - Ground : Battery voltage
PIIA4595E
12 (P) - 6 (P) : Continuity should exist.
13 (Y/G) - 7 (Y/G) : Continuity should exist.
12 (P) - Ground : Continuity should not exist.
13 (Y/G) - Ground : Continuity should not exist.
LIIA1022E

SE-80
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
4. CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
1. Connect seat memory switch.
2. Turn ignition switch ON.
3. Check voltage between automatic drive positioner control unit
connector M33 terminals 12, 13 and ground.
OK or NG
OK >> Replace automatic drive positioner control unit.
NG >> Replace seat memory switch.
Door Mirror Sensor Power Supply and Ground Circuit inspectionEIS002Z8
1. CHECK DOOR MIRROR SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and door mirror (LH and RH).
2. Check continuity between automatic drive positioner control unit connector M34 terminals 33, 41 and door
mirror connector D4 (LH), D107 (RH) terminals 5, 6.
3. Check continuity between automatic drive positioner control unit
connector M34 terminals 33, 41 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK MIRROR SENSOR POWER SUPPLY
1. Connect automatic drive positioner control unit and door mirror
LH.
2. Turn ignition switch to ACC.
3. Check voltage between automatic drive positioner control unit
connector M34 terminal 33 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace automatic drive positioner control unit.12 (P) - Ground : Battery voltage
13 (Y/G) - Ground : Battery voltage
LIIA1134E
33 (W/L) - 5 (W/L) : Continuity should exist.
41 (W/G) - 6 (W/G) : Continuity should exist.
33 (W/L) - Ground : Continuity should not exist.
41 (W/G) - Ground : Continuity should not exist.
LIIA1023E
33 (W/L) - Ground : Approx. 5V
LIIA1136E

AUTOMATIC DRIVE POSITIONER
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3. CHECK MIRROR SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between automatic drive positioner control unit
connector M34 terminal 41 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace automatic drive positioner control unit.
A/T Device (Detent Switch) Circuit InspectionEIS002Z9
1. CHECK FUNCTION
With CONSULT-II
Check that when the A/T shift lever is in P position, “DETENT SW”
on the DATA MONITOR becomes OFF.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> A/T device (detent switch) circuit is OK.
NG >> GO TO 2.
2. CHECK A/T DEVICE (DETENT SWITCH) HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/T device and driver seat control unit.
3. Check continuity between A/T device connector M203 terminal 6
and driver seat control unit connector P2 terminal 21.
4. Check continuity between A/T device connector M203 terminal 6
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.41 (W/G) - Ground : Continuity should exist.
LIIA1135E
Monitor item
[OPERATION or UNIT]Contents
DETENT SW“ON/
OFF”The selector lever position “P position (OFF)/other than P
position (ON)” judged from the park switch signal is dis-
played.
PIIA0291E
6 (L/R) - 21 (L/R) : Continuity should exist.
6 (L/R) - Ground : Continuity should not exist.
LIIA1024E

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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

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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

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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

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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