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P0868-LINE PRESSURE LOW (CONTINUED) 5. LINE PRESSURE SENSOR Turn the ignition off to the lock position. Disconnect the Transmission Simulator, Miller tool #8333 and reconnect all previously disconnected connectors. Install the Line Pressure Adaptor, Miller tool #8259, and the Pressure Gauge, Miller tool #C-3293, 0 to 2000 kPa or Start the engine in park. Monitor the line pressure readings of both the scan tool and the pressure gauge and compare the two readings. Is the line pressure gauge reading within 34 kPa or 5 PSI of the scan tool reading? Yes >> Go To 6 No >> Replace the Line Pressure Sensor per the Service Information. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 6. PLUGGED TRANSMISSION OIL FILTER Turn the ignition off to the lock position. Remove and inspect the Transmission Oil Pan for excessive debris per the Service Information. Remove and inspect the Primary Oil Filter per the Service Information. NOTE: Make sure the Primary Transmission Oil Filter and/or O-ring is not cracked or split. Does the Oil Pan contain excessive debris and/or is the Primary Oil Filter cracked or plugged? Yes >> Repair the plugged, cracked, or split Primary Transmission Oil Filter and/or O-ring. If the Primary Trans- mission Oil Filter is plugged refer to the Service Information for the proper Hydraulic repair procedure. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Repair internal transmission and inspect the Transmission Oil Pump per the Service Information and replace if necessary. If no problem is found, replace the Solenoid/TRS Assembly. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 7. (F856) 5-VOLT SUPPLY CIRCUIT SHORT TO VOLTAGE Disconnect the Transmission Simulator, Miller tool #8333. Reconnect all previously disconnected connectors except the Line Ignition on, engine not running. Measure the voltage of the (F856) 5-volt Supply circuit in the Line Is the voltage above 5.5 volts? Yes >> Repair the (F856) 5-volt Supply circuit for a short to volt- age. Perform 45RFE/545RFE TRANSMISSION VERIFICATION No >> Go To 8 21 - 420 AUTOMATIC TRANSMISSION - 545RFE - ELECTRICAL DIAGNOSTICS DR/DH |