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P1757-GOV PRESS ABOVE 3 PSI IN GEAR WITH 0 MPH (GAS) (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 48RE - SCHE- For a complete wiring diagramRefer to Section 8W Theory of Operation The Governor Pressure Control System is used to regulate the governor pressure which controls the shifts for first, • When Monitored: • Set Condition: Possible Causes OTHER TRANSMISSION DTC’S PRESENT (F856) 5 VOLT SUPPLY CIRCUIT OPEN (F856) 5 VOLT SUPPLY CIRCUIT OPEN INSIDE THE TRANSMISSION TRANSMISSION OIL BURNT OR OIL PAN HAS EXCESSIVE DEBRIS - INTERNAL TRANSMISSION DAMAGE GOVERNOR PRESSURE SENSOR GOVERNOR PRESSURE SOLENOID VALVE BODY ENGINE CONTROL MODULE 5 VOLT SUPPLY POWERTRAIN CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Diagnostic Test 1. OTHER TRANSMISSION DTC’S PRESENT Ignition on, engine not running. With the scan tool, read Engine DTCs. Are there any other Transmission DTCs present? Yes >> Refer to the Transmission category and perform the appropriate symptom(s). (Refer to 21 - TRANS- MISSION/TRANSAXLE/AUTOMATIC - 48RE - DIAGNOSIS AND TESTING) No >> Go To 2 21 - 768 AUTOMATIC TRANSMISSION - 48RE - GAS - ELECTRICAL DIAGNOSTICS DR/DH |