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Symptom: P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY When Monitored and Set Condition: P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIRCUITS When Monitored: With the ignition on and battery voltage above 10.4 volts. Set Condition: The PCM detects low voltage on the TCC solenoid control circuit when the solenoid is commanded off; or excess current on the TCC solenoid control circuit when POSSIBLE CAUSES INTERMITTENT CONDITION TCC SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE TCC SOLENOID CONTROL CIRCUIT SHORTED TO GROUND TRANSMISSION CONTROL RELAY FUSED B+ OPEN TCC SOLENOID CONTROL CIRCUIT SHORTED TO OTHER CIRCUITS TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORTED TO GROUND TCC SOLENOID CONTROL CIRCUIT OPEN TRANS CONTROL RELAY OUTPUT CIRCUIT SHORTED TO OTHER CIRCUITS TCC SOLENOID CONTROL CIRCUIT SHORTED TO GROUND INSIDE TRANS TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN TRANSMISSION CONTROL RELAY TCC SOLENOID CONTROL CIRCUIT SHORTED TO OTHER CIRCUIT INSIDE TRANS TRANSMISSION SOLENOID ASSEMBLY POWERTRAIN CONTROL MODULE TEST ACTION APPLICABILITY 1 NOTE: If DTC P1765 Trans 12 Volt Supply Relay Ctrl Circuit is present with without 45RFE AUTO TRANS Yes → No → 112 DRIVEABILITY - DIESEL |