Infiniti M45 (Y34). Manual — part 70
DTC P1721 VEHICLE SPEED SENSOR MTR
AT-165
D
E
F
G
H
I
J
K
L
M
A
B
AT
DTC P1721 VEHICLE SPEED SENSOR MTR
PFP:24814
Description
ACS001CL
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
ACS004PE
On Board Diagnosis Logic
ACS001CM
●
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
ACS001CN
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation Procedure
ACS001CO
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 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.
AT-166, "Diagnostic Procedure"
Item name
Condition
Display value
VHCL/S SE·MTR
During driving
Approximately matches the speedometer
reading.
SAT014K
AT-166
DTC P1721 VEHICLE SPEED SENSOR MTR
Diagnostic Procedure
ACS001CP
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.
Drive vehicle and read out the value of “VHCL/S SE·MTR”.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
CHECK DTC, STEP 1
Check following items.
1.
Refer to
AT-103, "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-165, "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.
Item name
Condition
Display value
VHCL/S SE·MTR
During driving
Approximately matches
the speedometer reading.
PCIA0033E
DTC P1730 A/T INTERLOCK
AT-167
D
E
F
G
H
I
J
K
L
M
A
B
AT
DTC P1730 A/T INTERLOCK
PFP:00000
Description
ACS001CQ
●
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
ACS001CR
●
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
ACS001CS
●
Harness or connectors
(The solenoid and switch circuit is open or shorted.)
●
Low coast brake solenoid valve
●
ATF pressure switch 2
DTC Confirmation Procedure
ACS001CT
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 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.
AT-172, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
SAT014K
AT-168
DTC P1730 A/T INTERLOCK
Wiring Diagram — AT — I/LOCK
ACS001CU
TCWA0121E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст