Nissan Versa Sedan. Instruction — part 347
P1574 ASCD VEHICLE SPEED SENSOR
EC-387
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is DTC detected?
NO
>> GO TO 2.
YES
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Check DTC with ABS actuator and electric unit (control unit). Refer to
BRC-32, "CONSULT Function (ABS)"
Is DTC detected?
NO
>> INSPECTION END
YES
>> Perform trouble shooting relevant to DTC indicated.
EC-388
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
P1715 INPUT SPEED SENSOR
P1715 INPUT SPEED SENSOR
Description
INFOID:0000000009267264
ECM receives input speed sensor signal from TCM via the CAN communication line. ECM uses this signal for
engine control.
DTC Logic
INFOID:0000000009267265
DTC DETECTION LOGIC
NOTE:
• If DTC P1715 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335. Refer
• If DTC P1715 is displayed with DTC P0340, first perform the trouble diagnosis for DTC P0340. Refer
• If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and drive the vehicle at more than 50 km/h (31 MPH) for at least 5 seconds.
CAUTION:
Always drive vehicle at a safe speed.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009267266
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
(CVT models).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
REPLACE TCM
Replace TCM. Refer to
TM-241, "Removal and Installation"
(A/T models) or
TM-437, "Removal and Installa-
(CVT models).
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1715
Input speed sensor
(TCM output)
Input speed sensor signal is different
from the theoretical value calculated by
ECM from output speed sensor signal
and engine rpm signal.
• Harness or connectors
(The CAN communication line is open or shorted)
• Harness or connectors
(Input speed sensor circuit is open or shorted)
• TCM
P1715 INPUT SPEED SENSOR
EC-389
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
EC-390
< DTC/CIRCUIT DIAGNOSIS >
[HR16DE]
P1720 VSS
P1720 VSS
Description
INFOID:0000000009267267
ECM receives two vehicle speed signals via the CAN communication line. One is sent from “ABS actuator and
electric unit (control unit)” via combination meter, and the other is from TCM (Transmission control module).
ECM uses these signals for engine control.
DTC Logic
INFOID:0000000009267268
DTC DETECTION LOGIC
NOTE:
• If DTC P1720 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P1720 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
• If DTC P1720 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without depressing the brake
pedal.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009267269
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
(CVT models).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Check DTC with “ABS actuator and electric unit (control unit)”. Refer to
Is the inspection result normal?
DTC No. Trouble diagnosis name
DTC detecting condition
Possible cause
P1720
Vehicle speed sensor
(TCM output)
The difference between two vehicle
speed signals is out of the specified
range.
• Harness or connectors
(Secondary speed sensor circuit is open or shorted.)
(Wheel sensor circuit is open or shorted.)
• TCM
• Secondary speed sensor
• ABS actuator and electric unit (control unit)
• Wheel sensor
• Combination meter
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