Transmission Control System
CODE NUMBERScan tool: 31, 81
CODE NAME
Pulse generator A system
CODE DESCRIPTION
If there is no pulse generator A output at output shaft revolution of 1,500 r/min. 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
DIAGNOSTIC CHART