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EC-350 < DTC/CIRCUIT DIAGNOSIS > [VQ40DE] P0500 VSS P0500 VSS Description INFOID:0000000009484056 NOTE: • If DTC P0500 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. • If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer . The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communi- cation line. On Board Diagnosis Logic INFOID:0000000009484057 FAIL-SAFE MODE When the malfunction is detected, ECM enters fail-safe mode. DTC Confirmation Procedure INFOID:0000000009484058 CAUTION: Always drive vehicle at a safe speed. NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct- ing the next step. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: Steps 1 and 2 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. WITH CONSULT 1. Start engine (VDC switch OFF). 2. Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT. The vehicle speed on CONSULT should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position. If NG, go to If OK, go to following step. 3. Select “DATA MONITOR” mode with CONSULT. 4. Warm engine up to normal operating temperature. 5. Maintain the following conditions for at least 60 consecutive seconds. DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0500 Vehicle speed sensor The almost 0 km/h (0 MPH) signal from • Harness or connectors (The CAN communication line is open or short- • Harness or connectors (The vehicle speed signal circuit is open or • Wheel sensor Detected item Engine operating condition in fail-safe mode Vehicle speed sensor When the fail-safe system for vehicle speed sensor is activated, the cooling fan operates ENG SPEED 1,550 - 6,000 rpm (M/T) COOLAN TEMP/S More than 70 °C (158°F) |