Cruise Control System

CRUISE CONTROL: CRUISE CONTROL SYSTEM: P0500: Vehicle Speed Sensor Malfunction
P0500 - Vehicle Speed Sensor Malfunction

DESCRIPTION

The wheel speed sensors monitor the wheel rotation speed and send signals to the skid control ECU. The skid control ECU converts the wheel speed signal into a 4-pulse signal and transmits it to the ECM via the combination meter assembly. The ECM determines the vehicle speed based on the frequency of the pulse signal.

HINT
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly. The signal is changed to a pulse signal at the transistor in the combination meter assembly. Each ECU controls the respective system based on the pulse signal.
- If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the wiring diagram below will not operate normally.









WIRING DIAGRAM





INSPECTION PROCEDURE

This DTC may be output by the SFI system at the same time. In that case, perform troubleshooting for the SFI system first.

PROCEDURE

1. READ OUTPUT DTC (DTC P0500)

(a) Clear the DTCs Cruise Control System.

(b) Perform the following to make sure that the DTC detection conditions are met.

HINT
If the detection conditions are not met, the malfunction cannot be detected.

(1) Drive the vehicle for more than 10 seconds when the engine coolant temperature is more than 20°C (68°F).

(c) Check for DTCs Cruise Control System.

Result:





B -- GO TO SFI SYSTEM (2GR-FSE)

A -- USE SIMULATION METHOD TO CHECK Electronic Circuit Inspection Procedure