DTC 77

TROUBLE CODE 77 - DUTY SOLENOID B -





8P1 CHECK TROUBLE CODE.





8P2 CHECK LOCK-UP DUTY SOLENOID GROUND LINE.





8P3 CHECK LOCK-UP DUTY SOLENOID.





8P4 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION.





8P5 CHECK HARNESS CONNECTOR BETWEEN TCM AND TRANSMISSION.





8P6 PREPARE SUBARU SELECT MONITOR.





8P7 CHECK OUTPUT SIGNAL EMITTED FROM TCM.





8P8 CHECK OUTPUT SIGNAL EMITTED FROM TCM.





8P9 CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR.





8P10: CHECK OUTPUT SIGNAL EMITTED FROM TCM USING SUBARU SELECT MONITOR.





8P11: CHECK LOCK-UP DUTY SOLENOID (IN TRANSMISSION).





8P12: CHECK HARNESS CONNECTOR BETWEEN LOCK-UP DUTY SOLENOID AND TRANSMISSION.





8P13: CHECK POOR CONTACT.

DIAGNOSIS:
Output signal circuit of duty solenoid B is open or shorted.

TROUBLE SYMPTOM:
No "lock-up" (after engine warm-up).





WIRING DIAGRAM