Nissan Frontier D40. Manual — part 410
P1574 ASCD VEHICLE SPEED SENSOR
EC-331
< COMPONENT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1574 ASCD VEHICLE SPEED SENSOR
Component Description
INFOID:0000000005273354
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-
tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to
for ASCD functions.
On Board Diagnosis Logic
INFOID:0000000005273355
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
NOTE:
• If DTC P1574 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
Refer to
.
• If DTC P1574 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer
.
• If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
.
• If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
.
DTC Confirmation Procedure
INFOID:0000000005273356
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.
TESTING CONDITION:
Step 3 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-III
1.
Start engine.
2.
Drive the vehicle at more than 40 km/h (25MPH).
3.
Check DTC.
4.
If DTC is detected, go to
.
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273357
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
TM-151, "CONSULT-III Function (TRANSMISSION)"
.
OK or NG
OK
>> GO TO 2.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1574
1574
ASCD vehicle speed
sensor
ECM detects a difference between two vehicle
speed signals is out of the specified range.
• Harness or connectors
(The CAN communication line is open or
shorted.)
• Harness or connectors
(The combination meter circuit is open or
shorted.)
• Combination meter
• Wheel sensor
• ABS actuator and electric unit (control unit)
• TCM (A/T models)
• ECM
EC-332
< COMPONENT DIAGNOSIS >
[QR25DE]
P1574 ASCD VEHICLE SPEED SENSOR
NG
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
BRC-21, "CONSULT-III Function (ABS)"
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace.
3.
CHECK COMBINATION METER
Check combination meter function.
Refer to
.
>> INSPECTION END
P1715 INPUT SPEED SENSOR
EC-333
< COMPONENT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P1715 INPUT SPEED SENSOR
Description
INFOID:0000000005273358
ECM receives input speed sensor signal from TCM through CAN communication line. ECM uses this signal for
engine control.
On Board Diagnosis Logic
INFOID:0000000005273359
NOTE:
• If DTC P1715 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
Refer to
.
• If DTC P1715 is displayed with DTC P0607 first perform the trouble diagnosis for DTC P0607.
Refer to
• 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
.
The MIL will not light up for this self-diagnosis.
Diagnosis Procedure
INFOID:0000000005273360
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Perform trouble shooting relevant to DTC indicated.
2.
REPLACE TCM
Replace TCM.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1715
1715
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
EC-334
< COMPONENT DIAGNOSIS >
[QR25DE]
P1805 BRAKE SWITCH
P1805 BRAKE SWITCH
Description
INFOID:0000000005273361
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
On Board Diagnosis Logic
INFOID:0000000005273362
The MIL will not light up for this self-diagnosis.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation Procedure
INFOID:0000000005273363
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.
WITH CONSULT-III
1.
Turn ignition switch ON.
2.
Fully depress the brake pedal for at least 5 seconds.
3.
Erase the 1st trip DTC with CONSULT-III.
4.
Check 1st trip DTC.
5.
If 1st trip DTC is detected, go to
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273364
1.
CHECK STOP LAMP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the stop lamp when depressing and releasing the brake pedal.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1805
1805
Brake switch
A brake switch signal is not sent to ECM for ex-
tremely long time while the vehicle is driving.
• Harness or connectors
(Stop lamp switch circuit is open or short-
ed.)
• Stop lamp switch
Engine operating condition in fail-safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Therefore, acceleration will be
poor.
Vehicle condition
Driving condition
When engine is idling
Normal
When accelerating
Poor acceleration
Brake pedal
Stop lamp
Fully released
Not illuminated
Slightly depressed
Illuminated
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст