Infiniti F50. Manual — part 68
DTC P1721 VEHICLE SPEED SENSOR MTR
AT-157
D
E
F
G
H
I
J
K
L
M
A
B
AT
DTC P1721 VEHICLE SPEED SENSOR MTR
PFP:24814
Description
ECS00862
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.
On Board Diagnosis Logic
ECS00863
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “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 Cause
ECS00864
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation Procedure
ECS00865
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch to “ON” position. (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.
AT-157, "Diagnostic Procedure"
Diagnostic Procedure
ECS00866
1.
CHECK INPUT SIGNALS
With CONSULT-II
1.
Start engine.
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3.
Vehicle start and read out the value of “VHCL/S SE·MTR”.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
SAT014K
PCIA0033E
AT-158
DTC P1721 VEHICLE SPEED SENSOR MTR
2.
CHECK DTC, STEP 1
Check following items.
1.
Refer to
AT-99, "DTC U1000 CAN COMMUNICATION LINE"
2.
Refer to
BRC-26, "CONSULT-II Functions"
.
3.
Refer to
.
OK or NG
OK
>> INSPECTION END
NG
>> If NG, recheck pin terminals for damage or loose connection with harness connector.
3.
CHECK DTC, STEP 2
Perform DTC confirmation procedure.
AT-157, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> If the system returns a malfunction, recheck pin terminals for damage or loose connection with
harness connector.
DTC P1730 A/T INTERLOCK
AT-159
D
E
F
G
H
I
J
K
L
M
A
B
AT
DTC P1730 A/T INTERLOCK
PFP:00000
Description
ECS00867
●
Fail-safe function to detect interlock conditions.
●
Fail-safe function to the transmission range switch detects the selector position and sends a signal to the
TCM.
On Board Diagnosis Logic
ECS00868
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “A/T INTERLOCK” with CONSULT-II or P1730 without 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 pressure switch when gear is steady.
Possible Cause
ECS00869
●
Harness or connectors
(The solenoid and switch circuit is open or shorted.)
●
Input, direct, high & low reverse clutch, front, low coast brake solenoid valve
●
Pressure switch 1, 2, 3, 5 and 6
DTC Confirmation Procedure
ECS0086A
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch to “ON” position. (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.
AT-165, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
SAT014K
AT-160
DTC P1730 A/T INTERLOCK
Wiring Diagram — AT — I/LOCK
ECS0086B
TCWM0013E
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