Toyota Camry Manual page 279

AX2–92
CIRCUIT INSPECTION
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.
Transaxle
Diagnostic Trouble Code Detecting Condition
DTC No.
P0720 When DTC No. P0500 is detected
< Reference >
Waveform between terminals SP 1 and E l when
vehicle speed is approx. 20 km/h (12 MPH).
AUTOMATIC TRANSAXLE –
HINT: The greater the vehicle speed, the greater
the number of VSS signals produced.
TROUBLESHOOTING
Trouble Area
Same as for DTC No. P0500