Dtc P0500 Vehicle Speed Sensor A
Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK OPERATION OF SPEEDOMETER
READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED)
CHECK HARNESS AND CONNECTOR (ECM - COMBINATION METER)
CHECK COMBINATION METER (+S VOLTAGE)
CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM)
CHECK COMBINATION METER (SPD SIGNAL INPUT WAVEFORM)
CHECK HARNESS AND CONNECTOR (COMBINATION METER - BRAKE ACTUATOR ASSEMBLY)
DTC P0500 Vehicle Speed Sensor "A" |
DESCRIPTION
The vehicle speed sensor monitors the wheel rotation speed and sends a signal 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. The ECM determines the vehicle speed based on the frequency of the pulse signals.- HINT:
- Each ECU controls its respective system based on this pulse signal, and if a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems that use the vehicle speed signal to perform control will not operate normally.
DTC No.
| DTC Detection Condition
| Trouble Area
|
P0500
| While the vehicle is being driven, no vehicle speed sensor signal is sent to the ECM.
(1 trip detection logic: for CVT)
(2 trip detection logic: for manual transaxle)
| - Open or short in speed signal circuit
- Combination meter
- Skid control ECU
- Vehicle speed sensor
- Main body ECU
- Radio receiver assembly
- Navigation receiver assembly
- Tire pressure warning ECU
- Auto wiper relay
- ECM
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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.
| 1.CHECK OPERATION OF SPEEDOMETER |
Drive the vehicle and check whether the operation of the speedometer in the combination meter is normal.
- HINT:
- The vehicle speed sensor is operating normally if the speedometer reading is normal.
- If the speedometer does not operate, check it by following the procedure described in Speedometer Malfunction.
| 2.READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Vehicle Speed.
Drive the vehicle.
Read the value displayed on the tester.
- OK:
- Vehicle speeds displayed on tester and speedometer display are equal.
| 3.CHECK HARNESS AND CONNECTOR (ECM - COMBINATION METER) |
Disconnect the ECM connector.
Disconnect the combination meter connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
E22-39 (+S) - A12-38 (SPD)
| Always
| Below 1 Ω
|
Text in Illustration*1
| Front view of wire harness connector
(to Combination Meter)
|
*2
| Front view of wire harness connector
(to ECM)
|
Reconnect the ECM connector.
Reconnect the combination meter connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (OTHER SYSTEM RELATED TO SPEED METER) |
|
|
| 4.CHECK COMBINATION METER (+S VOLTAGE) |
Disconnect the combination meter connector.
- HINT:
- Disconnect the ECU connectors on the other systems related to the speed signal (but the ECM connectors must be connected).
Turn the ignition switch ON.
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
E22-39 (+S) - Body ground
| Ignition switch ON
| 4.5 to 5.5 V
|
Text in Illustration*
| Front view of wire harness connector
(to Combination Meter)
|
| 5.CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM) |
Remove the combination meter assembly.
Connect the combination meter connector.
Move the shift lever to the neutral position.
Jack up one of the rear wheels.
Turn the ignition switch to ON.
Check the voltage between the terminal of the combination meter and the body ground while the rear wheel is turned slowly.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
E22-39 (+S) - Body ground
| Ignition switch ON
Turn wheel slowly
| Voltage generated
intermittently
|
Text in Illustration*
| Component with harness connected
(Combination Meter)
|
- HINT:
- The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter assembly.
| 6.CHECK COMBINATION METER (SPD SIGNAL INPUT WAVEFORM) |
Remove the combination meter assembly.
Connect the combination meter connector.
Move the shift lever to the neutral position.
Jack up one of the rear wheels.
Turn the ignition switch to ON.
Check the voltage between the terminal of the combination meter and the body ground while the rear wheel is turned slowly.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
E22-38 (SI) - Body ground
| Ignition switch ON
Turn wheel slowly
| Voltage generated
intermittently
|
Text in Illustration*
| Component with harness connected
(Combination Meter)
|
- HINT:
- The output voltage should fluctuate up and down, similarly to the diagram, when the wheel is turned slowly.
| 7.CHECK HARNESS AND CONNECTOR (COMBINATION METER - BRAKE ACTUATOR ASSEMBLY) |
Disconnect the combination meter connector.
Disconnect the brake actuator connector.
Measure the resistance according to the value(s) in the table below.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
E22-38 (SI) - A67-11 (SP1)
| Always
| Below 1 Ω
|
E22-38 (SI) or A67-11 (SP1) - Body ground
| Always
| 10 kΩ or higher
|
Reconnect the combination meter connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
