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 |
2.CHECK STOP LIGHT RELAY. 1) Turn the ignition switch to OFF. 2) Measure the resistance of stop light relay terminals. | Is the resistance less than 1 -- | Replace the stop light relay. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK |
3.CHECK VDCCM&H/U CONNECTOR. Disconnect the connector from the VDCCM&H/U. | Is there poor contact or damage of the VDCCM&H/U connector- | Repair the VDCCM&H/U connector. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK |
4.CHECK STOP LIGHT SWITCH CIRCUIT. 1) Turn the ignition switch to ON. 2) Measure the voltage between stop light relay and chassis ground. Connector & terminal (B48) No. 15 (+) — Chassis ground (−): | Is the voltage 10 V or more when the stop light switch is OFF (when pedal is not depressed)- | Repair the stop light switch circuit. | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK |
5.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&H/U. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U) | Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC C1532 BLS ON STUCK |
6.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. |