Infiniti FX35, FX50 (S51). Manual — part 1824
P1705 TP SENSOR
TM-103
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
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P1705 TP SENSOR
Description
INFOID:0000000005250087
• The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly.
• The accelerator pedal position sensor detects the accelerator position.
• The accelerator pedal position sensor transform the accelerator pedal position into output voltage, and emit
the voltage signal to the ECM.
• The TCM receives accelerator pedal position signal from the ECM via CAN communication.
DTC Logic
INFOID:0000000005250088
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “SLCT LVR POSI” and “VHCL/S SE-A/T” in “Data Monitor” in “TRANSMISSION”.
3.
Drive vehicle and maintain the following conditions for 5 seconds or more.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is “P1705” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005250089
1.
CHECK DTC OF ECM
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “Self Diagnostic Results” in “ENGINE”.
Is any DTC detected?
YES
>> Check DTC detected item. Refer to
NO
>> GO TO 2.
2.
CHECK DTC OF TCM
With CONSULT-III
Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is any DTC other than “P1705” detected?
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1705
Accelerator Pedal Position Sen-
sor Signal
TCM detects the difference be-
tween two accelerator pedal po-
sition signals received from
ECM via CAN communication.
Harness or connectors
(Sensor circuit is open or short-
ed.)
SLCT LVR POSI
: D
VHCL/S SE-A/T
: 5 km/h (3 MPH) or more
TM-104
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
P1705 TP SENSOR
YES
>> Check DTC detected item. Refer to
NO
>> GO TO 3.
3.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace A/T assembly. Refer to
(2WD),
(AWD).
NO
>> Repair or replace damaged parts.
P1721 VEHICLE SPEED SIGNAL
TM-105
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
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P1721 VEHICLE SPEED SIGNAL
Description
INFOID:0000000005250090
The vehicle speed signal is transmitted from unified meter and A/C amp. to TCM by CAN communication line.
The signal functions as an auxiliary device to the output speed sensor when it is malfunctioning. The TCM will
then use the vehicle speed signal.
DTC Logic
INFOID:0000000005250091
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
• Always drive vehicle at a safe speed.
• Be careful not to rev engine into the red zone on the tachometer.
1.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT-III
1.
Start the engine.
2.
Select “ESTM VSP SIG” in “Data Monitor” in “TRANSMISSION”.
3.
Drive vehicle and maintain the following conditions for 60 seconds or more.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is “P1721” detected?
YES
>> Go to
NO
>> INSPECTION END
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1721
Vehicle Speed Signal
• The vehicle speed transmit-
ted from the unified meter
and A/C amp. to TCM is 5 km/
h (3MPH) or less when the
vehicle speed detected by
the output speed sensor is 20
km/h or more. (Only when
starts after the ignition switch
is turned ON.)
• The vehicle speed detected
by the output speed sensor
does not decrease despite
the 36 km/h (23 MPH) or
more of deceleration in vehi-
cle speed received from the
unified meter and A/C amp.
when the vehicle speed
transmitted from the unified
meter and A/C amp. to TCM
is 36 km/h (23 MPH) or more
and the vehicle speed detect-
ed by the output speed sen-
sor is 24 (15 MPH) or more.
Harness or connectors
(Sensor circuit is open or short-
ed.)
ESTM VSP SIG
: 40 km/h (25 MPH) or more
TM-106
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01A (VQ35HR)]
P1721 VEHICLE SPEED SIGNAL
Diagnosis Procedure
INFOID:0000000005250092
1.
CHECK DTC OF UNIFIED METER AND A/C AMP.
With CONSULT-III
Perform “Self Diagnostic Results” in “METER/M&A”.
Is any DTC detected?
YES
>> Check DTC detected item. Refer to
.
NO
>> GO TO 2.
2.
CHECK DTC OF TCM
With CONSULT-III
Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is any DTC other than “P1721” detected?
YES
>> Check DTC detected item. Refer to
NO
>> GO TO 3.
3.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace A/T assembly. Refer to
(2WD),
(AWD).
NO
>> Repair or replace damaged parts.
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