Honda Civic manuals

Subaru Legacy Service Manual: Dtc c1741 pressure sensor

DTC DETECTING CONDITION:

A fault is detected if two fluid pressure signals in master cylinder are out of normal range.

A fault is detected if the condition that supply voltage for the fluid pressure sensor is out of normal judgment range continues for predetermined time.

A fault is detected if the communication status of fluid pressure sensor is abnormal.

A fault is detected if the data of fluid pressure sensor is abnormal.

A fault is detected if the offset value of fluid pressure sensor signal exceeds a predetermined judgment value.

TROUBLE SYMPTOM:

VDC does not operate sometimes.

The hill hold function may not be operable.

STEPCHECKYESNO

1.CHECK STOP LIGHT SWITCH CIRCUIT.

Check stop light switch open circuit.

Is the stop light switch circuit OK-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1741 PRESSURE SENSOR

Repair the stop light switch circuit.

NOTE:

If there is malfunction in the stop light circuit, DTC may be recorded in the memory.

2.CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR.

1) Using the Subaru Select Monitor, select “Data monitor”. Subaru Select Monitor > OPERATION

2) Read the «Master Cylinder Pressure Sensor» displayed on display.

With the brake pedal released, does the value for «Master Cylinder Pressure Sensor» fall within 0 — 11 bar-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1741 PRESSURE SENSOR

Replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)

3.CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR.

1) Using the Subaru Select Monitor, select “Data monitor”. Subaru Select Monitor > OPERATION

2) Read the «Master Cylinder Pressure Sensor» displayed on display.

When the brake pedal is operated, does the master cylinder pressure sensor output value on the display change in accordance with the brake pedal operation-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1741 PRESSURE SENSOR

Replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)

4.CHECK VDCCM&H/U.

1) Perform the Clear Memory Mode. Clear Memory Mode

2) Perform the Inspection Mode. Inspection Mode

3) Read the DTC. Read Diagnostic Trouble Code (DTC)

Is the same DTC displayed-

Replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1741 PRESSURE SENSOR

5.CHECK DETECTION OF OTHER DTCS FOR VDC.

Read Diagnostic Trouble Code (DTC)

Is any other DTC displayed-

Perform the diagnosis according to DTC. List of Diagnostic Trouble Code (DTC)

Currently, it is normal. There may have been a poor contact in the harness and connector or a temporarily noise interference.

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