Infiniti FX35, FX50 (S51). Manual - part 1862

P0717 INPUT SPEED SENSOR A

TM-255

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

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P0717 INPUT SPEED SENSOR A

Description

INFOID:0000000005250233

The input speed sensor detects input shaft rpm (revolutions per minute). It is located on the input side of the A/
T. Monitors revolution of sensor 1 and sensor 2 for non-standard conditions.

DTC Logic

INFOID:0000000005250234

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”, “GEAR”, “VHCL/S SE-A/T”, “CLSD THL POS” and “ENGINE SPEED” in “Data
Monitor” in “TRANSMISSION”.

3.

Drive vehicle and maintain the following conditions for 5 seconds or more.

CAUTION:

Keep the same gear position.
NOTE:
Driving the vehicle uphill (increased engine load) will help maintain the driving conditions required for this
test.

4.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

 With GST

Follow the procedure “With CONSULT-III”.

Is “P0717” detected?

YES

>> Go to 

TM-255, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005250235

1.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/T assembly. Refer to 

TM-362, "Exploded View"

.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0717

Input/Turbine Speed Sensor A 
Circuit No Signal

The revolution of input speed 
sensor 1 and/or 2 is 270 rpm or 
less.

• Harness or connectors

(Sensor circuit is open.)

• Input speed sensor 1 and/or 

2

SLCT LVR POSI

: D

GEAR

: 2nd, 3rd, 4th, 5th or 6th

VHCL/S SE-A/T

: More than 40 km/h (25 MPH)

CLSD THL POS

: OFF

ENGINE SPEED

: More than 1,500 rpm

TM-256

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

P0717 INPUT SPEED SENSOR A

NO

>> Repair or replace damaged parts.

P0720 OUTPUT SPEED SENSOR

TM-257

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

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P0720 OUTPUT SPEED SENSOR

Description

INFOID:0000000005250236

The output speed sensor detects the revolution of the parking gear and emits a pulse signal. The pulse signal
is transmitted to the TCM which converts it into vehicle speed.

DTC Logic

INFOID:0000000005250237

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”.

 With GST

Follow the procedure “With CONSULT-III”.
Is “P0720” detected?

YES

>> Go to 

TM-258, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0720

Output Speed Sensor Circuit

• The vehicle speed detected 

by the output speed sensor is 
5 km/h (3MPH) or less when 
the vehicle speed transmitted 
from the unified meter and A/
C amp. to TCM is 20 km/h or 
more. (Only when starts after 
the ignition switch is turned 
ON.)

• The vehicle speed transmit-

ted from the unified meter 
and A/C amp. to TCM does 
not decrease despite the 36 
km/h (23 MPH) or more of de-
celeration in vehicle speed 
detected by the output speed 
sensor. when the vehicle 
speed detected by the output 
speed sensor is 36 km/h (23 
MPH) or more and the vehicle 
speed transmitted from the 
unified meter and A/C amp. to 
TCM is 24 (15 MPH) or more.

• Harness or connectors

(Sensor circuit is open.)

• Output speed sensor

ESTM VSP SIG

: 40 km/h (25 MPH) or more

TM-258

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

P0720 OUTPUT SPEED SENSOR

Diagnosis Procedure

INFOID:0000000005250238

1.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/T assembly. Refer to 

TM-362, "Exploded View"

.

NO

>> Repair or replace damaged parts.