Nissan Murano: Dtc/circuit Diagnosis / P1574 Ascd Vehicle Speed Sensor
DESCRIPTION
The ECM receives two vehicle speed signals via CAN communication line. One is sent from combination meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD control. Refer to System Description for ASCD functions.
DTC DETECTION LOGIC
The difference the between two vehicle speed signals is out of the specified range.
| DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | |
| P1574 |
ASCD VHL SPD SEN (ASCD Nissan Murano vehicle speed sensor) |
Diagnosis condition | Start engine and drive the Nissan Murano vehicle at more than 40 km/h (25 MPH) |
| Signal (terminal) | — | ||
| Threshold | The difference the between two Nissan Murano vehicle speed signals is out of the specified range | ||
| Diagnosis delay time | — | ||
POSSIBLE CAUSE
-
Harness or connectors
(The CAN communication line is open or shorted.)
-
Combination meter
-
ABS actuator and electric unit (control unit)
-
Wheel sensor
-
TCM
-
ECM
FAIL-SAFE
Not applicable
CHECK DTC PRIORITY
If DTC P1574 is displayed with DTC UXXXX, P0500, P0605 or P0607, first perform the confirmation procedure for DTC UXXXX, P0500, P0605 or P0607.
Is applicable DTC detected?
YES>>Perform diagnosis of applicable.
-
DTC UXXXX: Refer to DTC Index.
-
DTC P0500: Refer to DTC Description.
-
DTC P0605: Refer to DTC Description.
-
DTC P0607: Refer to DTC Description.
GO TO 2.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
-
Turn ignition switch OFF and wait at least 10 seconds.
-
Turn ignition switch ON.
-
Turn ignition switch OFF and wait at least 10 seconds.
>>
GO TO 3.
PERFORM DTC CONFIRMATION PROCEDURE
-
Start engine (VDC switch OFF).
-
Drive the Nissan Murano vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the Nissan Murano vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.
-
Check DTC.
Is DTC detected?
YES>>Proceed to Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: INSPECTION END
CHECK DTC PRIORITY
If DTC P1574 is displayed with DTC UXXXX, P0500, P0605 or P0607, first perform the confirmation procedure for DTC UXXXX, P0500, P0605 or P0607.
Is applicable DTC detected?
YES>>Perform diagnosis of applicable.
-
DTC UXXXX: Refer to DTC Index.
-
DTC P0500: Refer to DTC Description.
-
DTC P0605: Refer to DTC Description.
-
DTC P0607: Refer to DTC Description.
GO TO 2.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to CONSULT Function.
Is the inspection result normal?
YES>>GO TO 3.
NO>>Perform trouble shooting relevant to DTC indicated.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and electric unit (control unit). Refer to CONSULT Function.
Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace malfunctioning part.
CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to CONSULT Function (METER/MA).
>>
INSPECTION END
P1572 Icc Brake Switch
DTC Description
DTC DETECTION LOGICNOTE:
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM memory...
P1575 Brake Switch
DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition
P1575
BRAKE SW
(Stop lamp switch circuit)
Stop lamp switch signal is sent to ECM for extremely long time while the Nissan Murano vehicle is being driven...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: How to Read Wiring Diagrams
Connector Symbols Most connector symbols in wiring diagrams are shown from the terminal side. Connector symbols shown from the terminal side are enclosed by a single line and followed by the direction mark. Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark...
Nissan Murano (Z52) 2015-2024 Service Manual: B260f Eng State Sig Lost
DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC Detection Condition B260F ENG STATE SIG LOST (Engine state signal lost) Diagnosis condition When ignition switch is ON. Signal (terminal) — Threshold BCM has not yet received the engine status signal from ECM when ignition switch is in the ON position...
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Autolight system
The autolight system allows the headlights to turn on and off automatically. The autolight system can:
Turn on the headlights, front parking, tail, license plate and instrument panel lights automatically when it is dark. Turn off all the lights (except daylight running lights) when it is light. Keep all the lights on for a period of time after you place the ignition switch in the OFF position and all doors are closed.