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P0875-UD HYDRAULIC PRESSURE TEST (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - For a complete wiring diagram Refer to Section 8W • 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 (T29) UD PRESSURE SWITCH SENSE CIRCUIT OPEN TRANSMISSION CONTROL RELAY DTCS PRESENT (T29) UD PRESSURE SWITCH SENSE CIRCUIT OPEN (F856) 5-VOLT SUPPLY CIRCUIT OPEN (T29) UD PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND (F856) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND (T29) UD PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE TRANSMISSION SOLENOID/TRS ASSEMBLY INTERNAL TRANSMISSION POWERTRAIN CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Theory of Operation The Transmission Control System tests the pressure switches when they are off. The test verifies that the switches Diagnostic Test 1. DETERMINING IF RELATED DTC’S ARE PRESENT With the scan tool, check for other transmission DTC’s Is there any Loss of Prime, Transmission Control Relay, 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. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 2 21 - 178 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |