Diagnostic Trouble Code (DTC) Inspection Procedure - P0722
DESCRIPTION AND OPERATION
Based on the pulse generator "B" signals:
• Intermediate shaft driven gear speed is determined to monitor vehicle speed
TROUBLESHOOTING HINTS
| Malfunction Detection Conditions | Possible Cause | Inspection Item |
| • Vehicle speed sensor signal indicates a speed > 30 km/h • Engine crankshaft speed > 3000 rpm • Engaged transmission gear: 2nd, 3rd or 4th |
• Malfunction of pulse generator "B" • Malfunction (poor contact) in the connector • Malfunction of the A/T ECU • Malfunction of the intermediate shaft driven gear |
• Open circuit in pulse generator "B" circuit • Pulse generator "B" • Signal noise (poor or damaged shielded wire) • Chattering of the vehicle speed sensor contacts |
| <SYMPTOM DESCRIPTION> • Shocks are felt when 2nd and 4th gears are engaged • When DTC P0722 is set, the transmission enters fail-safe mode (gear shifting is locked) and is fixed in 3rd gear ("D" range) or 2nd gear ("2" or "L" range) • DTCs P0731, P0732, P0733 and P0734 may be set together with this code |
CIRCUIT DIAGRAM AND TROUBLESHOOTING ALGORITHM
TROUBLESHOOTING PROCEDURE
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