Cruise Control System

CRUISE CONTROL: CRUISE CONTROL SYSTEM: P0500: Vehicle Speed Sensor "A"

DTC P0500 - Vehicle Speed Sensor "A"

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

DESCRIPTION

Vehicle speed sensor signal circuit is abnormal, the set speed is erased and the cruise control operation is canceled. At this time, the power indicator blinks until the main switch is pushed OFF. Cruise control operation is prohibited until the main switch is pushed ON again.






WIRING DIAGRAM





INSPECTION PROCEDURE
HINT: Read freeze frame data using the Techstream. 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.

PROCEDURE

1. READ VALUE USING TECHSTREAM (VEHICLE SPEED)
(a) Connect the Techstream to the DLC3.
(b) On the Techstream, enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed.
(c) Drive the vehicle at 2500 rpm or more.
Result:






C -- CHECK FOR INTERMITTENT PROBLEM
B -- CHECK ECM (SP2 SIGNAL)
A -- Continue to next step.
2. CHECK WIRE HARNESS (VEHICLE SPEED SENSOR - ECM)




(a) Disconnect the V1 sensor connector.
(b) Disconnect the E3 ECM connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
3. CHECK ECM (SP2 SIGNAL)




(a) Check the waveform of the ECM when the vehicle speed is approximately 60 km/h (37 mph).
OK:










NG -- REPLACE VEHICLE SPEED SENSOR
OK -- Continue to next step.
4. CHECK SENSOR INSTALLATION (VEHICLE SPEED SENSOR)




(a) Check the sensor installation.
OK:
Sensor is installed correctly
NG -- SECURELY REINSTALL SENSOR
OK -- Continue to next step.
5. INSPECT VEHICLE SPEED SENSOR




(a) Measure the resistance of the sensor.
Standard resistance:
560 to 680 Ohms
NG -- REPLACE VEHICLE SPEED SENSOR
OK -- Continue to next step.
6. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Drive the vehicle at 3000 rpm or more for 10 seconds or more.
(c) Read the DTCs.
Result:






B -- REPLACE ECM
A -- END