READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED)
CHECK COMBINATION METER SYSTEM
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
CHECK HARNESS AND CONNECTOR (ECM - NO. 3 JUNCTION BLOCK)
DTC P0500 Vehicle Speed Sensor "A" |
DESCRIPTION
The wheel 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 signal.
DTC No. | DTC Detection Condition | Trouble Area |
P0500 | While vehicle being driven, no vehicle speed sensor signal to ECM. (1 trip detection logic: Automatic transaxle) (2 trip detection logic: Manual transaxle) |
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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.READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED) |
Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Turn the tester on.
Select the following menu items: Powertrain / Engine and ECT / Date List / Vehicle Speed.
Drive the vehicle.
Read the value displayed on the tester.
- OK:
- Vehicle speeds displayed on tester and speedometer display are equal.
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OK | ||
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2.CHECK COMBINATION METER SYSTEM |
The circuits that send vehicle speed signals to this system are inspected in the meter system (CAMRY_ACV40 RM000002UD700KX.html).
During inspection for the meter section, if there is an instruction that indicates to go back inspections for each system, proceed to the next step.
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3.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) |
Disconnect the A24 ECM connector.
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Disconnect the F2 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 +S (F2-12) - SPD (A24-8) Always Below 1 Ω
Reconnect the ECM connector.
Reconnect the combination meter connector.
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OK | ||
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4.CHECK HARNESS AND CONNECTOR (ECM - NO. 3 JUNCTION BLOCK) |
Disconnect the A24 ECM connector.
Disconnect the 3B No. 3 junction block connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance (Check for open):
Tester Connection Condition Specified Condition 3B-10 - SPD (A24-8) Always Below 1 Ω
Reconnect the ECM connector.
Reconnect the No. 3 junction block connector.
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OK | ||
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