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Symptom: P0753-TRANS 3-4 SHIFT SOL/TRANS RELAY CIRCUITS When Monitored and Set Condition: P0753-TRANS 3-4 SHIFT SOL/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 3-4 shift solenoid control circuit when the solenoid is commanded off; or excess current when attempting to command the POSSIBLE CAUSES INTERMITTENT CONDITION 3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE 3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORTED TO GROUND TRANSMISSION CONTROL RELAY FUSED B+ OPEN 3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORTED TO OTHER CIRCUITS TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORTED TO GROUND 3-4 SHIFT SOLENOID CONTROL CIRCUIT OPEN TRANS CONTROL RELAY OUTPUT CIRCUIT SHORTED TO OTHER CIRCUITS 3-4 SHIFT SOLENOID CONTROL CIRCUIT SHORTED TO GROUND INSIDE TRANS TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN TRANSMISSION CONTROL RELAY 3-4 SHIFT 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 → 2 Turn the ignition on. without 45RFE AUTO TRANS Yes → No → 124 DRIVEABILITY - DIESEL |