Subaru Crosstrek Service Manual: Dtc c0056 g sensor signal

DTC detecting condition:

Longitudinal G sensor signal failure

Trouble symptom:

• ABS does not operate.

• VDC does not operate.

• EyeSight does not operate.

1.CHECK INSTALLATION OF VDCCM&H/U.

Is VDCCM&H/U installed properly without being tilted?
Is the bracket deformation-free?
Are the VDCCM&H/U installation bolts installed without missing or getting loose?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0056 G SENSOR SIGNAL">Go to Step 2.

Repair the defective part.

• Install VDCCM&H/U properly.

• Replace the bracket if faulty.

• Tighten the VDCCM&H/U installation bolt. General Description > COMPONENT">

2.CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR.

1) Park the vehicle on a level surface.

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

3) Read the «Fr Rr G sensor Output» displayed on display.

Is the reading of «Fr Rr G sensor Output» −2 — 2 m/s2?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0056 G SENSOR SIGNAL">Go to Step 3.

Recheck from step 1, and if the problem is not solved, Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0056 G SENSOR SIGNAL">Go to Step 6.

3.SET 0 POINT FOR LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR.

1) Using the Subaru Select Monitor, select “Work Support”.

2) Perform the “Longitudinal G sensor & lateral G sensor 0 point setting mode”. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U) > ADJUSTMENT">

Is the 0 point setting successful?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0056 G SENSOR SIGNAL">Go to Step 4.

Recheck from step 1, and when the 0 point setting is not possible, replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)">

4.PERFORM DRIVING TEST.

Drive approximately 10 minutes, and check if the warning lights illuminate or improperly operate during driving.

In a safe place, drive the vehicle while alternating acceleration and deceleration as much as possible.

Did the ABS warning light or VDC warning light remain off?
Does ABS or VDC operate without malfunction?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C0056 G SENSOR SIGNAL">Go to Step 5.

Recheck from step 1, and when the warning lights illuminate or improperly operate, replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)">

5.CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR.

1) Park the vehicle on a level surface.

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

3) Read the «Fr Rr G sensor Output» displayed on display.

Is the reading of «Fr Rr G sensor Output» −1.5 — 1.5 m/s2?

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

Recheck from step 1, and if the problem is not solved, replace the VDCCM&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U)">

6.CHECK OUTPUT OF LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR.

1) Remove the VDCCM&H/U installation bolt and bracket.

2) Keep VDCCM&H/U in a horizontal position.

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

4) Read the «Fr Rr G sensor Output» displayed on display.

When the VDCCM&H/U is in a horizontal position, is the value of «Fr Rr G sensor Output» −1.5 — 1.5 m/s2?

Check the bracket and brake pipe, and install VDCCM&H/U in a horizontal position to the vehicle.

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

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