Toyota RAV4 manuals

Toyota Sienna Service Manual: Vehicle Speed Sensor Malfunction

DTC P0500 Vehicle Speed Sensor Malfunction

DTC P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High

DESCRIPTION The cruise control system uses the same vehicle speed signal that is sent to the ECM for the SFI system.

If DTC P0500 is detected, perform the diagnosis using the inspection procedure for DTC P0500 in the SFI system. The speed signal is converted for use by the cruise control inside the ECM.

Both the SFI system and the cruise control system can set DTC P0500, however the detection conditions of the two systems are different.

DTC No.

DTC Detection Condition

Trouble Area

P0500

The vehicle speed signal from the vehicle speed sensor is cut for 0.14 sec. or more while cruise control is in operation
  • Vehicle speed sensor
  •  Vehicle speed sensor signal circuit
  •  ECM

P0503

Momentary interruption and noise are detected when a rapid change of vehicle speed occurs while cruise control is in operation
  • Vehicle speed sensor
  •  Vehicle speed sensor signal circuit
  •  ECM

WIRING DIAGRAM

Refer to DTC P0500

INSPECTION PROCEDURE

Refer to DTC P0500

Diagnostic trouble code chart
If a trouble code is displayed during the DTC check, check the trouble areas listed for that code in the table below and proceed to the appropriate page. Dynamic Laser Cruise Control System: ...

Brake Switch "A" Circuit
DTC P0571 Brake Switch "A" Circuit DESCRIPTION When the brake pedal is depressed, the stop light switch sends a signal to the ECM. When the ECM receives this signal, it cancels the crui ...

Other materials:

Open in ABS Motor Relay Circuit
DESCRIPTION The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU turns the motor relay on and operates the ABS pump motor. If the voltage supplied to the motor relay (+BM) is below the DTCs detection threshold due to low voltage from the battery ...

Inspection
1. INSPECT NO. 1 VALVE ROCKER ARM SUBASSEMBLY (a) Turn the roller by hand to check that it turns smoothly. HINT: If the roller does not turn smoothly, replace the valve rocker arm sub-assembly. 2. INSPECT VALVE LASH ADJUSTER ASSEMBLY NOTICE: Keep the lash adjuster free of dirt ...

Reclining Motor Circuit
DESCRIPTION The fold seat control ECU receives a switch operation signal from the power rear no. 2 seat switch and the fold seat switch, and activates the reclining motor. At this time, the Hall IC (seatback position sensor) detects the actuation of the seatback and sends a seatback actuation ...

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