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P0869-LINE PRESSURE HIGH (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 (F856) 5-VOLT SUPPLY CIRCUIT OPEN LINE PRESSURE SENSOR CONNECTION (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT OPEN (F856) 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND (T140) PRESSURE CONTROL SOLENOID CONTROL CIRCUIT SHORT TO GROUND ITRANSMISSION CONTROL RELAY OUTPUT CIRCUIT LINE PRESSURE SENSOR STUCK OR STICKING MAIN REGULATOR VALVE POWERTRAIN CONTROL MODULE Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Theory of Operation Line pressure is measured by the Line Pressure Sensor (LPS) and regulation is achieved by changing the duty The Transmission Control System calculates torque input to the transmission and uses it as the primary input to the Diagnostic Test 1. CHECK FOR RELATED DTC’S With the scan tool, check for other Transmission DTC’s Is the DTC P0932 or P0888present also? Yes >> Refer to the Transmission category and perform the appropriate symptom. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 2 21 - 154 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |