service INFINITI QX56 2007 Factory Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2007, Model line: QX56, Model: INFINITI QX56 2007Pages: 3061, PDF Size: 64.56 MB
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< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
Work Flow
INFOID:0000000003533166
1. Check the symptom and customer's requests.
2. Understand the system description. Refer to SE-11, "
System Description".
3. Perform the preliminary check. Refer to SE-30, "
Preliminary Check" .
4. Check the self-diagnosis, results using CONSULT-II. Refer to SE-32, "
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-35,
"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.
Preliminary CheckINFOID:0000000003533167
SETTING CHANGE FUNCTION
The settings of the automatic driving positioner system can be changed, using CONSULT-II and the display in
the center of the instrument panel.
×: Applicable –: Not applicable
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 op-
eration (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 op-
eration (Motor operated)Battery voltage
Other than above 0
48 B Ground — 0 Te r m i n a l Wire Col-
orItem ConditionVoltage (V)
(Approx.)
Setting item ContentCONSULT–II
(WORK SUPPORT)Display unitDefault
settingFactory
setting
SEAT SLIDE
VOLUME SETThe distance at exiting opera-
tion can be selected from the
following 3 modes.40mm
—××
80mm — —
150mm — —
Sliding Front Seat and
Steering Wheel Raise
When Entry/ Exiting Ve-
hicleThe seat sliding and steering
wheel raise turnout and return
at entry/exit can be selected:
ON (operated)–OFF (not oper-
ated)ON ON: Indicator lamp ON —×
OFF OFF: Indicator lamp OFF×—
Reset custom settings* All settings to default. —Default: Setting button
ON——
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It is possible to set sliding front seat for entry/exit of vehicle by pressing set switch.
*: Setting of sliding front seat for entry/exit of vehicle is ON at factory-shipment. But if custom settings are reset, setting turns OFF.
NOTE:
After the setting is registered, the new setting is effective, even if the battery is disconnected.
BCM Power Supply and Ground Circuit InspectionINFOID:0000000003533168
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Power Supply and Ground Circuit InspectionINFOID:0000000003533169
1.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.
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.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 3.
NG >> Repair or replace harness.
3.CHECK DRIVER SEAT CONTROL UNIT GROUND CIRCUIT
Content Setting change operation Indicator LEDs
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be operated.
Press the set switch for more than 10 secondsBlinking twice
The seat sliding and steering
wheel raise turnout and return
at entry/exit can be not operat-
ed.Blinking once
Unit Power source Fuse No.
Driver seat control unit START power supply 2 (10A)
Driver seat control unit and automatic
drive positionercontrol unitBattery power supply 22 (15A)
Battery power supplyf (50A)
ConnectorTe r m i n a l s
Power
sourceConditionVoltage (V)
(Approx.)
(+) (-)
P333 GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
40 GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
P2 6 GroundSTART
power
supplyIgnition
switch
STARTBattery
voltage
PIIA4819E
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AUTOMATIC DRIVE POSITIONER
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 4.
NG >> Repair or replace harness.
4.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 5.
NG >> Repair or replace harness.
5.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.)INFOID:0000000003533170
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following. 32 - Ground : Continuity should exist.
48 - Ground : Continuity should exist.
PIIA4542E
ConnectorTe r m i n a l s
Power
sourceConditionVoltage (V)
(Approx.)
(+) (-)
M3434 GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
39 GroundBattery
power
supplyIgnition
switch
OFFBattery
voltage
PIIA4543E
40 - Ground : Continuity should exist.
48 - Ground : Continuity should exist.
PIIA4544E
AUTO DRIVE POS.
diagnostic modeDescription
WORK SUPPORTSupports 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.
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AUTOMATIC DRIVE POSITIONER
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CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure".
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”.
DATA MONITOR
SELECTIOM FROM MENU
CONSULT-II display Item Malfunction is detected when...Reference
page
CAN COMM CIRC
[U1000]CAN communication Malfunction is detected in CAN communication. SE-35
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, sta-
tus is judged “Output error”.SE-37
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-38
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-39
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-40
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-45
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-54
ADJ PEDAL MO-
TOR
[B2117]Pedal adjust motorWhen any manual and automatic operations are not performed, if mo-
tor operations of seat pedal is detected for 0.1 second or more, status
is judged “Output error”.SE-41
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-50
DETENT SW
[B2126]Park SWWith 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 po-
sition switch input system is judged malfunctioning.SE-69
UART COMM
[B2128]UART communica-
tionMalfunction is detected in UART communication.SE-73
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![INFINITI QX56 2007 Factory Service Manual SE-34
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
ACTIVE TEST
CAUTION:
During vehicle driving, do not perform active test.
NOTE:
Monitor item [OPERATION or UNIT] Contents
SLIDE SW-FR “ON/OFF](/img/42/57029/w960_57029-2705.png "INFINITI QX56 2007 Factory Service Manual SE-34
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
ACTIVE TEST
CAUTION:
During vehicle driving, do not perform active test.
NOTE:
Monitor item [OPERATION or UNIT] Contents
SLIDE SW-FR “ON/OFF")
SE-34
< SERVICE INFORMATION >
AUTOMATIC DRIVE POSITIONER
ACTIVE TEST
CAUTION:
During vehicle driving, do not perform active test.
NOTE:
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 dis-
played.
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) sta-
tus 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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If active test is performed, reset seat memory and automatic drive positioner seat memory after performing
work.
DISPLAY ITEM LIST
CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)INFOID:0000000003533171
1.SELF-DIAGNOSTIC RESULT CHECK
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. Connect to CONSULT-II, and select “AUTO DRIVE POS.” on the “SELECT DIAG SYSTEM” screen.
2. Select “SELF-DIAG RESULTS” on "SELECT DIAG MODE" screen.
3. Check display content in self-diagnostic results.
Contents displayed
No malfunction>>Inspection End.
Malfunction in CAN communication system>>After printing the monitor items, go to “CAN System”. Refer to
LAN-3, "
Precaution When Using CONSULT-II".
Symptom ChartINFOID:0000000003533172
Test item Description
SEAT SLIDE The sliding motor is activated by receiving the drive signal.
SEAT RECLINING The reclining motor is activated by receiving the drive signal.
SEAT LIFTER FR The lifting motor (front) is activated by receiving the drive signal.
SEAT LIFTER RR The lifting motor (rear) is activated by receiving the drive signal.
PEDAL MOTOR The pedal adjust motor is activated by receiving the drive signal.
MEMORY SW INDCTR The memory switch indicator is lit by receiving the drive signal.
MIRROR MOTOR RHThe RH mirror motor moves the mirror UP/DOWN and LEFT/RIGHT by receiving the drive
signal.
MIRROR MOTOR LHThe LH mirror motor moves the mirror UP/DOWN and LEFT/RIGHT by receiving the drive
signal.
CONSULT-II display code Diagnosis item
U1000INITIAL DIAG
TRANSMIT DIAG
BCM
METER/M&A
ECM
I-KEY
Symptom Diagnoses / service procedure Refer to page
Only setting change function cannot be set with display.1. Preliminary checkSE-30
2. CAN communication inspection using CONSULT-II (self-
diagnosis)SE-35
3. If the above systems are normal, check display system.AV- 7 3
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AUTOMATIC DRIVE POSITIONER
A part of seat system does not operate (both automatical-
ly and manually).1. Sliding motor circuit inspection SE-37
2. Reclining motor LH circuit inspection SE-38
3. Lifting motor (front) circuit inspectionSE-39
4. Lifting motor (rear) circuit inspectionSE-40
5. If the above systems are normal, replace the driver seat
control unit.SE-83
A part of pedal adjust and door mirror does not operate
(both automatically and manually).1. Pedal adjusting motor circuit inspectionSE-412. Mirror motor LH circuit check SE-42
3. Mirror motor RH circuit check SE-44
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-46
2. Reclining sensor circuit inspectionSE-47
3. Lifting sensor (front) circuit inspectionSE-48
4. Lifting sensor (rear) circuit inspectionSE-49
5. If the above systems are normal, replace the driver seat
control unit.SE-83
A part of door mirror system does not operate (only auto-
matic operation).1. Mirror sensor LH circuit checkSE-512. Mirror sensor RH circuit checkSE-53
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.A/T device (park position switch) circuit inspectionSE-69
2. UART communication line circuit inspectionSE-73
3. Pedal adjusting sensor circuit inspectionSE-50
4. Steering wheel tilt sensor circuit inspectionSE-54
4. If all the above systems are normal, replace the automatic
drive positioner control unit.SE-11
A part of seat system does not operate (only manual op-
eration).1. Sliding switch circuit inspectionSE-55
2. Reclining switch circuit inspectionSE-56
3. Lifting switch (front) circuit inspectionSE-58
4. Lifting switch (rear) circuit inspectionSE-59
5. If the above systems are normal, replace the driver seat
control unit.SE-83
A part of pedal adjust and door mirror does not operate
(only manual operation).1. Pedal adjusting switch circuit inspection SE-61
2. Door mirror remote control switch (change over switch)
circuit inspection SE-62
3. Door mirror remote control switch (mirror switch) switch-
ing circuit inspection SE-64
4. If the above systems are normal, replace the automatic
drive positioner control unit.SE-11
Automatic drive positioner system does not operate (only
memory switch operation).1. Seat memory switch circuit inspectionSE-672. If the above systems are normal, replace the driver seat
control unit.SE-83
Seat memory indicator lamps 1 and 2 do not illuminate.1. Seat memory indicator lamp circuit inspectionSE-672. If all the above systems are normal, replace the driver seat
control unit.SE-83
Symptom Diagnoses / service procedure Refer to page
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Sliding Motor Circuit InspectionINFOID:0000000003533173
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 connector
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.
4.CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
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-72
2. If all the above systems are normal, replace the BCM.BCS-24
Door mirror system does not operate (only manual oper-
ation).1.Door mirror remote control switch ground circuit inspectionSE-65
Door mirror system does not operate (only automatic op-
eration).1. Door mirror sensor power supply and ground circuit in-
spectionSE-69
Seat system does not operate (only manual operation). 1. Power seat switch ground circuit inspectionSE-60
Symptom Diagnoses / 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
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AUTOMATIC DRIVE POSITIONER
1. Connect the driver seat control unit and sliding motor LH.
2. Check voltage between driver seat control unit connector and
ground.
OK or NG
OK >> Replace sliding motor. Refer to SE-83.
NG >> Replace driver seat control unit. Refer to SE-83
.
Reclining Motor LH Circuit InspectionINFOID:0000000003533174
1.CHECK SEAT RECLINING MECHANISM
Check the following.
• Operation malfunction caused by an interference with the center pillar or center console
• 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 RECLINING” in ACTIVE TEST.
Without CONSULT-II
GO TO 3.
OK or NG
OK >> Reclining motor LH circuit is OK.
NG >> GO TO 3.
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
ConnectorTe r m i n a l s
ConditionVoltage (V) (Ap-
prox.)
(+) (-)
P335
GroundSliding switch ON
(FORWARD operation)Battery voltage
Other than above 0
42Sliding switch ON
(BACKWARD operation)Battery voltage
Other than above 0
PIIA4801E
Test item Description
SEAT RECLININGThe reclining motor LH is activated by receiving the drive
signal.
PIIA0268E
36 - 4 : Continuity should exist.
44 - 3 : Continuity should exist.
36 - Ground : Continuity should not exist.
44 - Ground : Continuity should not exist.
LIIA0697E
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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. Refer to SE-83.
NG >> Replace driver seat control unit. Refer to SE-83
.
Lifting Motor (Front) Circuit InspectionINFOID:0000000003533175
1.CHECK FRONT END SEAT LIFTING MECHANISM
Check the following.
• Operation malfunction caused by lifter mechanism deformation, pinched harness or other foreign materials
• 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.
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.
ConnectorTe r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
P336
GroundReclining switch ON
(FORWARD operation)Battery voltage
Other than above 0
44Reclining switch ON
(BACKWARD operation)Battery voltage
Other than above 0
PIIA4802E
Test item Description
SEAT LIFTER FRThe lifting motor (front) is activated by receiving the drive sig-
nal.
PIIA0271E
37 - 6 : Continuity should exist.
45 - 4 : Continuity should exist.
LIIA0698E