DTC    P0500    Vehicle Speed Sensor "A"

для подготовки Нажмите здесь


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.

УКАЗАНИЕ:
  1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
  2. If a short occurs in any of the ECUs or in the wire harness connected to an ECU, all systems in the diagram below will not operate normally.


A079413E13


DTC No.
DTC Detection Condition
Trouble Area
P0500
While vehicle is being driven, no vehicle speed sensor signal to ECM.
(2-trip detection logic)
  1. Open or short in speed signal circuit
  2. Combination meter
  3. Skid control ECU
  4. Vehicle speed sensor
  5. Headlight leveling ECU
  6. Main body ECU
  7. Radio receiver assembly
  8. Navigation receiver assembly
  9. Windshield wiper relay
  10. ECM

WIRING DIAGRAM


E146870E01


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (See page Нажмите здесь) and initialization (See page Нажмите здесь).

УКАЗАНИЕ:
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, and other data from the time the malfunction occurred.

1.READ VALUE OF INTELLIGENT TESTER (VEHICLE SPEED)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG).

  1. Turn the tester on.

  1. Select the following menu items: Powertrain / Engine and ECT / Date List / Vehicle Speed.

  1. Drive the vehicle.

  1. Read the value displayed on the tester.

    OK:
    The vehicle speeds displayed on the tester and speedometer display are equal.



NG
Перейдите к шагу 2
OK

CHECK FOR INTERMITTENT PROBLEMS (Нажмите здесь)  

2.CHECK COMBINATION METER SYSTEM

  1. Inspect the circuits that send vehicle speed signals to the combination meter system (See page Нажмите здесь).

  1. During inspection for the combination meter system, if there is an instruction that indicates to go back to inspections for each system, proceed to the next step.


NEXT


3.CHECK HARNESS AND CONNECTOR (ECM - COMBINATION METER)


    A148735E04

  1. Disconnect the ECM connector.

  1. Disconnect the combination meter connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    E46-36 (+S) - A50-14 (SPD)
    		Always
    		Below 1 Ω

  1. Reconnect the ECM connector.

  1. Reconnect the combination meter connector.



NG
Перейдите к шагу 4
OK

REPLACE ECM (Нажмите здесь)  

4.CHECK HARNESS AND CONNECTOR (ECM - NO. 4 JUNCTION BLOCK)


  1. Disconnect the ECM connector.


    A142924E01

  1. Disconnect the No. 4 junction block connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    4G-8 - A50-14 (SPD)
    		Always
    		Below 1 Ω

  1. Reconnect the ECM connector.

  1. Reconnect the No. 4 junction block connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - NO. 4 JUNCTION BLOCK)
OK

REPAIR OR REPLACE WIRE HARNESS (NO. 4 JUNCTION BLOCK) 

































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