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Subaru Crosstrek Service Manual: Dtc c1531 bls off stuck

VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC C1531 BLS OFF STUCK

DTC detecting condition:

Defective stop light switch

Trouble symptom:

ABS does not operate.

VDC does not operate.

Hill start assist does not operate.

WIRING DIAGRAM:

Vehicle dynamics control system Vehicle Dynamics Control System > WIRING DIAGRAM">

STEPCHECKYESNO

1.CHECK STOP LIGHT SWITCH.

Check the stop light switch. Stop Light Switch > INSTALLATION">

Is the check result OK?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 2.

Adjust the installation position of the stop light switch. Stop Light Switch > INSTALLATION">

2.CHECK STOP LIGHT SWITCH.

1) Turn the ignition switch to OFF.

2) Disconnect the stop light switch connector.

3) Measure the resistance of stop light switch terminals.

Terminals

No. 3 — No. 4:

Is the resistance 1 ? or less when the switch is ON (when pedal is depressed)?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 3.

Replace the stop light switch. Stop Light Switch">

3.CHECK STOP LIGHT POWER SUPPLY.

Measure the voltage between stop light switch terminal and chassis ground.

Connector & terminal

(B65) No. 3 (+) — Chassis ground (−):

Is the voltage 10 — 15 V?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 4.

Repair the stop light power supply circuit.

4.CHECK STOP LIGHT SWITCH HARNESS (CHECK FOR OPEN CIRCUIT).

1) Disconnect the connector from the VDCCM&H/U.

2) Measure the resistance between VDCCM&H/U and stop light switch.

Connector & terminal

(B65) No. 4 — (B310) No. 30:

Is the resistance less than 1 ??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 5.

Repair the stop light switch circuit.

5.CHECK POOR CONTACT OF CONNECTORS.

Is there poor contact of connector between stop light switch and VDCCM&H/U?

Repair the connector.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 6.

6.CHECK VDCCM&H/U.

1) Connect all connectors.

2) Perform the Clear Memory Mode. Clear Memory Mode">

3) Perform the Inspection Mode. Inspection Mode">

4) Read the DTC. Read Diagnostic Trouble Code (DTC)">

Is the same DTC displayed?

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

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1531 BLS OFF STUCK">Go to Step 7.

7.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 temporary poor contact in the harness and connector or a temporary noise interference.

Dtc c1431 at
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C1431 ATDTC detecting condition:Defective TCMTrouble symptom:• ABS does not operate.& ...

Dtc c1532 bls on stuck
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C1532 BLS ON STUCKDTC detecting condition:Defective stop light switchTrouble symptom:• ...

Other materials:

Removal
LIGHTING SYSTEM > Door SwitchREMOVAL1. Disconnect the ground cable from battery. NOTE">2. Remove the switch assembly - door.(1) Remove the screws, and pull out the switch assembly - door toward you.(2) Disconnect the connector and remove the switch assembly - door. ...

Radar sensor
Adjustment Blind Spot Detection/Rear Cross Traffic Alert > Radar SensorADJUSTMENT1. RADAR AXIS ADJUSTMENTCAUTION:• After removal/installation or replacement of the radar sensor, perform the radar axis adjustment.• The procedure for the master is only shown here. However the procedure ...

Inspection
INSTRUMENTATION/DRIVER INFO (DIAGNOSTICS) > General DescriptionINSPECTIONBefore performing the diagnosis, check the following items which may cause problems relating the wiper or light.1. Check the battery. Battery">2. Check the fuse condition.3. Check the connecting condition of harness ...

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