Diagnostic Procedures with DTC - P0731
DESCRIPTION AND OPERATION
• If, after 1st gear is engaged, the output speed sensor "B" [PG-B] signal (output shaft speed) multiplied by the 1st gear ratio does not match the pulse generator "A" [PG-A] signal (input shaft speed), DTC P0731 is stored in the TCM memory
TROUBLESHOOTING HINTS
| Malfunction Detection Conditions | Possible Cause | Inspection Item |
| • Engine speed > 400 rpm • Intermediate shaft speed more than 900 rpm • ATF temperature: above 60 °C • TCM determines the signal does not match the programmed normal parameters |
• Malfunction of pulse generator "A" [PG-A] or pulse generator "B" [PG-B] • Malfunction of the intermediate shaft driven gear • Malfunction of the end clutch drum • Malfunction of rear clutch |
• Malfunction of pulse generator circuit • Rear clutch slipping • One-way clutch slipping |
| <SYMPTOM DESCRIPTION> • When this DTC occurs, the transaxle enters fail-safe mode (shift change prohibited) and is fixed in 3rd gear ("D" range) or 2nd gear ("2" or "L" range) • DTCs P0717 or P0722 (pulse generator DTCs) may also be set together with this DTC |
TROUBLESHOOTING PROCEDURE
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