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• When Monitored: • Set Condition: Possible Causes LINE PRESSURE SENSOR TRANSMISSION FLUID CONTAMINATION RELATED DTC’S PRESENT TRANSMISSION SOLENOID/TRS ASSEMBLY EXCESSIVE DEBRIS IN OIL PAN POOR LINE PRESSURE SENSOR CONNECTION (T9) OD PRESSURE SWITCH SENSE CIRCUIT OPEN RELATED TCM POWER INPUT DTCS PRESENT (T9) OD PRESSURE SWITCH SENSE CIRCUIT OPEN (T39) 5-VOLT SUPPLY CIRCUIT OPEN TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN (T9) OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND (T39) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND (T9) OD PRESSURE SWITCH SENSE CIRCUIT SHORT TO OTHER CIRCUITS TRANSMISSION SOLENOID/TRS ASSEMBLY INTERNAL TRANSMISSION TRANSMISSION CONTROL MODULE Always perform the 45RFE/545RFE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to Theory of Operation The Transmission Control System tests the pressure switches when they are off. The test verifies that the switches Diagnostic Test 1. CHECK FOR RELATED DTCS With the scan tool, check for other transmission DTCs. Is there any Loss of Prime, TCM Power Input, and/or Line Pressure Sensor DTCs present? Yes >> Refer to the Transmission category and perform the appropriate symptom. If the DTC, P0944-LOSS OF PRIME is present, perform its respective test first. No >> Go To 2 21 - 560 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS - (DIESEL) KJ |