1, 2 and 3 Digit Codes: 81

Name
Code No. 31, 81 - Pulse generator A system

Description
If there is no pulse generator A output at vehicle speeds of 43km/h (27mph) or above, there is an open circuit in pulse generator A and diagnostic trouble code No. 31 is output. In addition, if diagnosis code No.31 is output 4 times within 10 seconds, there is an open circuit in pulse generator A, fail-safe code No. 81 is output and the vehicle is locked in 3rd gear (D) or 2nd gear (2, L) as a fail-safe measure.

Probable cause
- Malfunction of pulse generator A
- Malfunction of connector
- Malfunction of end clutch retainer
- Malfunction of TCM
- Noise generated





Diagnosis