P0500

DTC P0500 VEHICLE SPEED SENSOR "A"

1. OUTLINE OF DIAGNOSIS
Judge as NG when outside of standard value. Judge NG when the received data from ABSCM & H/U is abnormal, and the vehicle speed data is impossible.

2. COMPONENT DESCRIPTION
Vehicle speed signals are taken in to the ABSCM&H/U, and OK/NG data of the vehicle speed, ABS wheel speed sensor is received by CAN communication from the ABSCM&H/U.




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after 2 seconds or more have passed since the engine started.

5. DIAGNOSTIC METHOD




Abnormality Judgment
Judge as NG when the continuous time of completing the malfunction criteria below becomes 2.5 seconds or more.




Normality Judgment
Judge as OK and clear the NG when all of the following criteria are established.

6. DTC CLEAR CONDITION
- When the OK idling cycle is completed 40 times in a row
- When Clear Memory is performed

7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When the OK driving cycle is completed 3 times in a row
- When Clear Memory is performed

8. FAIL SAFE
- Accelerator sensor signal process: Not allowed fully closed point learning. (Hold previous value)
- Vehicle speed sensor signal process: Vehicle speed = 10 km/h (6 MPH)
- Fuel cut control: Not allowed vehicle speed 0 km/h (0 MPH) fuel cut. Normally the high vehicle speed fuel cut performs on vehicle speed condition and engine speed, but perform the fuel cut only on engine speed condition (4,400 rpm or more).
- ISC control: Open loop compensation is set to specified value (1 g (0.04 oz)/s). Not allowed ISC feedback volume calculation.
- Air conditioner control: Not allowed air conditioner cut at accelerating.
- Radiator fan control: Both main and sub fan ON
- Gear ratio judgment: Control as fixed in sixth gear

9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)