sensor INFINITI QX56 2007 Factory Manual Online

AT-118
< SERVICE INFORMATION >
DTC P1705 THROTTLE POSITION SENSOR
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Depress accelerator pedal and read out the value of “ACCELE
POSI”.
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. Refer to AT-83, "
CONSULT-II Function (A/T)".
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to AT-83, "
CONSULT-II Function (A/T)".
OK or NG
OK >> GO TO 4.
NG >> Check the DTC detected item. Refer to AT-83, "
CON-
SULT-II Function (A/T)".
• If CAN communication line is detected, go to AT- 9 1
.
4.CHECK DTC
Perform “DTC Confirmation Procedure”.
• Refer to AT-117, "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-158
.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEM
Check the following items:
• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-210, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
Item name Condition Display value
(Approx.)
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8/8
PCIA0070E
BCIA0031E

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
AT-119
< SERVICE INFORMATION >
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DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
DescriptionINFOID:0000000003532328
The A/T fluid temperature sensor detects the A/T fluid temperature and sends a signal to the TCM.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532329
On Board Diagnosis LogicINFOID:0000000003532330
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1710 (A/T), P0710 (ENGINE) ATF TEMP SEN/CIRC” with CONSULT-II is
detected when TCM receives an excessively low or high voltage from the sensor.
Possible CauseINFOID:0000000003532331
• Harness or connectors
(The sensor circuit is open or shorted.)
• A/T fluid temperature sensors 1, 2
DTC Confirmation ProcedureINFOID:0000000003532332
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 10
minutes (Total). (It is not necessary to maintain continuously.)
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: “D” position
4. If DTC is detected, go to AT-120, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Item name Condition °C (°F) Display value (Approx.)
ATF TEMP SE 1
0 (32) - 20 (68) - 80 (176)3.3 - 2.7 - 0.9 V
ATF TEMP SE 23.3 - 2.5 - 0.7 V
BCIA0031E

AT-120
< SERVICE INFORMATION >
DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
Wiring Diagram - AT - FTS
INFOID:0000000003532333
Diagnosis ProcedureINFOID:0000000003532334
1.CHECK A/T FLUID TEMPERATURE SENSOR 1 SIGNAL
With CONSULT-II
BCWA0323E

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
AT-121
< SERVICE INFORMATION >
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1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “ATF TEMP SE 1”.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK A/T FLUID TEMPERATURE SENSOR 2 SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out the value of “ATF TEMP SE 2”.
OK or NG
OK >> GO TO 8.
NG >> GO TO 5.
3.CHECK A/T FLUID TEMPERATURE SENSOR 1
Check A/T fluid temperature sensor 1. Refer to AT-122, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace the control valve with TCM. Refer to AT-210, "
Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
4.CHECK SUB-HARNESS
1. Disconnect park/neutral position switch connector and TCM connector.
2. Check continuity between park/neutral position switch connector
terminals and TCM connector terminals.
3. If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
5.CHECK A/T FLUID TEMPERATURE SENSOR 2
Check A/T fluid temperature sensor 2. Refer to AT-122, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace the A/T fluid temperature sensor 2. Refer to AT-210, "
Control Valve with TCM and A/T
Fluid Temperature Sensor 2".
6.CHECK TERMINAL CORD ASSEMBLY
Item name Condition °C (°F) Display value (Approx.)
ATF TEMP SE 1 0 (32) - 20 (68) - 80 (176) 3.3 - 2.7 - 09 V
PCIA0039E
Item name Condition °C (°F) Display value (Approx.)
ATF TEMP SE 2 0 (32) - 20 (68) - 80 (176) 3.3 - 2.5 - 0.7 V
PCIA0039E
Item Connector Terminal Continuity
Park/neutral position switch con-
nectorF505 6
Ye s
TCM connector F503 19
Park/neutral position switch con-
nectorF505 7
Ye s
TCM connector F503 18
SCIA5461E

AT-122
< SERVICE INFORMATION >
DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
1. Disconnect A/T fluid temperature sensor 2 connector and TCM connector.
2. Check continuity between A/T fluid temperature sensor 2 con-
nector terminals and TCM connector terminals.
3. If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
7.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
1. Check TCM power supply and ground circuit. Refer to AT-158
.
2. Reinstall any part removed.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-210, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
8.CHECK DTC
Perform “DTC Confirmation Procedure”.
• Refer to AT-119, "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 1.
Component InspectionINFOID:0000000003532335
A/T FLUID TEMPERATURE SENSOR 1
1. Remove control valve with TCM. Refer to AT-210, "Control Valve with TCM and A/T Fluid Temperature
Sensor 2".
2. Check resistance between terminals.
3. If NG, replace the control valve with TCM. Refer to AT-210,
"Control Valve with TCM and A/T Fluid Temperature Sensor 2".
A/T FLUID TEMPERATURE SENSOR 2
1. Remove A/T fluid temperature sensor 2. Refer to AT-210, "Control Valve with TCM and A/T Fluid Temper-
ature Sensor 2".
Item Connector Terminal Continuity
A/T fluid temperature sensor 2
connectorF507 1
Ye s
TCM connector F502 3
A/T fluid temperature sensor 2
connectorF507 2
Ye s
TCM connector F502 5
SCIA5462E
Name TerminalTemperature
°C (°F)Resistance (Ap-
prox.) (kΩ)
A/T fluid temperature sen-
sor 16-70 (32) 15
20 (68) 6.5
80 (176) 0.9
SCIA5463E

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
AT-123
< SERVICE INFORMATION >
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2. Check resistance between terminals.
3. If NG, replace the A/T fluid temperature sensor 2. Refer to AT-
210, "Control Valve with TCM and A/T Fluid Temperature Sen-
sor 2"
Name TerminalTemperature °C
(°F)Resistance (Ap-
prox.) (kΩ)
A/T fluid temperature sen-
sor 21-20 (32) 10
20 (68) 4
80 (176) 0.5
SCIA5271E

AT-124
< SERVICE INFORMATION >
DTC P1721 VEHICLE SPEED SENSOR MTR
DTC P1721 VEHICLE SPEED SENSOR MTR
DescriptionINFOID:0000000003532336
The vehicle speed sensor·MTR signal is transmitted from combination meter to TCM by CAN communication
line. The signal functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM
will then use the vehicle speed sensor·MTR signal.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532337
On Board Diagnosis LogicINFOID:0000000003532338
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1721 VHE SPD SE·MTR” with CONSULT-II is detected when TCM does not
receive the proper vehicle speed sensor MTR signal (input by CAN communication) from combination meter.
Possible CauseINFOID:0000000003532339
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000003532340
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POS: 1/8 or less
VHCL SPEED SE: 30 km/h (17 MPH) or more
4. If DTC is detected, go to AT-124, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003532341
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer AT-83, "
CONSULT-II Function (A/T)".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 9 1.
NO >> GO TO 2.
2.CHECK INPUT SIGNAL
With CONSULT-II
Item name Condition Display value (km/h)
VHCL/S SE·MTR During driving Approximately matches the speedometer reading.
BCIA0031E

DTC P1721 VEHICLE SPEED SENSOR MTR
AT-125
< SERVICE INFORMATION >
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1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Drive vehicle and read out the value of “VHCL/S SE·MTR”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK COMBINATION METERS
Check CAN communication line. Refer to DI-15, "
How to Proceed with Trouble Diagnosis".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK DTC
Perform “DTC Confirmation Procedure”.
• Refer to AT-124, "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-158
.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.DETECT MALFUNCTIONING ITEM
Check the following items:
• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-210, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
Item name Condition Display value (Approx.)(km/h)
VHCL/S SE·MTR During drivingApproximately matches the speed-
ometer reading.
SCIA2148E

AT-126
< SERVICE INFORMATION >
DTC P1730 A/T INTERLOCK
DTC P1730 A/T INTERLOCK
DescriptionINFOID:0000000003532342
• Fail-safe function to detect interlock conditions.
On Board Diagnosis LogicINFOID:0000000003532343
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1730 A/T INTERLOCK” with CONSULT-II is detected when TCM does not receive
the proper voltage signal from the sensor and switch.
• TCM monitors and compares gear position and conditions of each ATF pressure switch when gear is steady.
Possible CauseINFOID:0000000003532344
• Harness or connectors
(The solenoid and switch circuit is open or shorted.)
• Low coast brake solenoid valve
• ATF pressure switch 2
DTC Confirmation ProcedureINFOID:0000000003532345
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
Selector lever: “D” position
5. If DTC is detected, go to AT-127, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Judgement of A/T InterlockINFOID:0000000003532346
When A/T Interlock is judged to be malfunctioning, the vehicle should be fixed in 2nd gear, and should be set
in a condition in which it can travel.
When one of the following fastening patterns is detected, the fail-safe function in correspondence with the indi-
vidual pattern should be performed.
A/T INTERLOCK COUPLING PATTERN TABLE
BCIA0031E

DTC P1730 A/T INTERLOCK
AT-127
< SERVICE INFORMATION >
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l: NG, X: OK
Diagnosis ProcedureINFOID:0000000003532347
1.SELF-DIAGNOSIS
With CONSULT-II
1. Drive vehicle.
2. Stop vehicle and turn ignition switch “OFF”.
3. Turn ignition switch “ON”.
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
OK or NG
OK >> GO TO 2.
NG >> Check low coast brake solenoid valve circuit and func-
tion. Refer to AT-146
, AT-148.
2.CHECK DTC
Perform “DTC Confirmation Procedure”.
• Refer to AT-126, "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT-158
.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.DETECT MALFUNCTIONING ITEM
Check the following items:
• The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT-210, "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2".
NG >> Repair or replace damaged parts.
Gear positionATF pressure switch output
Fail-safe
functionClutch pressure output pattern after fail-safe func-
tion
SW3
(I/C)SW6
(HLR/
C)SW5
(D/C)SW1
(FR/B)SW2
(LC/B)I/C HLR/C D/C FR/B LC/B L/U
A/T interlock
coupling pat-
tern3rd – X X –lHeld in
2nd gearOFF OFF ON OFF OFF OFF
4th – X X –lHeld in
2nd gearOFF OFF ON OFF OFF OFF
5th X X – XlHeld in
2nd gearOFF OFF ON OFF OFF OFF
BCIA0031E