P0500

DESCRIPTION

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a 4-pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of these pulse signals.

DTC No.	DTC Detection Condition	Trouble Area
P0500	Vehicle speed signal from 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 Combination meter ECM

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred (Click here).

1. INSPECT SPEEDOMETER (METER OPERATION)

1. Drive the vehicle and check if operation of the speedometer in the combination meter is normal.

   HINT:

   The vehicle speed sensor is operating normally if the speedometer display is normal.

NG	CHECK SPEEDOMETER CIRCUIT

OK

2. INSPECT ECM

1. Shift the lever to the neutral position.

2. Jack up the vehicle.

3. Turn the ignition switch ON.

4. Measure the voltage of the ECM connectors as the wheel is turned slowly.

   Standard:

   Tester Connection	Specified Condition
   A5-22 (SPD) - E4-7 (E1)	Generated intermittently

   HINT:

   The output voltage should fluctuate up and down similarly to the diagram on the left when the wheel is turned slowly.

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE ECM