Subaru Crosstrek Service Manual: Dtc c1532 bls on stuck

DTC detecting condition:

Defective stop light switch

Trouble symptom:

• ABS does not operate.

• VDC does not operate.

• Hill start assist does not operate.

1.INTERVIEW CUSTOMERS.

Make sure that the operation was performed in which accelerator pedal and brake pedal were depressed simultaneously (with depressing brake pedal with left foot).

Were the acceleration pedal and brake pedal depressed simultaneously?

System is normal. (DTC may be recorded if the brake pedal is always depressed while driving.)

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK">Go to Step 2.

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 M? or more when switch is OFF (when pedal is not depressed)?

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK">Go to Step 3.

Replace the stop light switch. Stop Light Switch">

3.CHECK STOP LIGHT SWITCH HARNESS.

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

2) Measure the resistance between VDCCM&H/U connector and chassis ground.

Connector & terminal

(B310) No. 30 — Chassis ground:

Is the resistance less than 1 M??

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK">Go to Step 4.

Repair the stop light switch circuit.

4.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 C1532 BLS ON STUCK">Go to Step 5.

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

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