Infiniti FX35, FX50 (S51). Manual — part 1869
P1705 TP SENSOR
TM-283
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B (VK50VE)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
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
NO
>> Repair or replace damaged parts.
TM-284
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B (VK50VE)]
P1721 VEHICLE SPEED SIGNAL
P1721 VEHICLE SPEED SIGNAL
Description
INFOID:0000000005250287
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:0000000005250288
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
P1721 VEHICLE SPEED SIGNAL
TM-285
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B (VK50VE)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Diagnosis Procedure
INFOID:0000000005250289
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
NO
>> Repair or replace damaged parts.
TM-286
< DTC/CIRCUIT DIAGNOSIS >
[7AT: RE7R01B (VK50VE)]
P1730 INTERLOCK
P1730 INTERLOCK
Description
INFOID:0000000005250290
Fail-safe function to detect interlock conditions.
DTC Logic
INFOID:0000000005250291
DTC DETECTION LOGIC
NOTE:
When the vehicle is driven fixed in second gear, a input speed sensor malfunction is displayed, but
this is not a input speed sensor malfunction.
DTC CONFIRMATION PROCEDURE
CAUTION:
• “
” must be performed before starting “DTC CONFIRMATION PROCE-
DURE”.
• Never perform “DTC CONFIRMATION PROCEDURE” before completing the repair, which may cause
secondary malfunction.
• 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 “GEAR” in “Data Monitor” in “TRANSMISSION”.
3.
Drive vehicle the following condition.
4.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P1730” detected?
YES
>> Go to
NO
>> INSPECTION END
Judgment of A/T Interlock
INFOID:0000000005250292
.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1730
Interlock
The output speed sensor de-
tects the deceleration of 12 km/
h (7 MPH) or more for 1 sec-
ond.
• Harness or connectors
(Solenoid valve circuit is open
or shorted.)
• Input clutch solenoid valve
• Direct clutch solenoid valve
• High and low reverse clutch
solenoid valve
• Front brake solenoid valve
• Low brake solenoid valve
• 2346 brake solenoid valve
• Anti-interlock solenoid valve
• Each clutch and brake
• Hydraulic control circuit
SLCT LVR POSI
: D
GEAR
: 1st through 7th
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