P0720

DTC P0720 Output Speed Sensor Circuit Malfunction
(For Electronically Controlled Transaxle)

CIRCUIT DESCRIPTION




The vehicle speed sensor outputs a 4-pulse signal for every revolution of the transaxle differential. After this signal has been converted into a more precise rectangular wave form by the wave form shaping circuit inside the combination meter, it is then transmitted to the ECM.

DETECTING CONDITION

- Waveform between terminals SP1 and E1 when vehicle speed is approx. 20 km/h (12 MPH).

HINT: The greater the vehicle speed, the greater the number of VSS signals produced.

DIAGNOSTIC CHART

WIRING DIAGRAM

INSPECTION PROCEDURE

Step 1:

Step 2:

Step 3: