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• When Monitored: • Set Condition: Possible Causes LOSS OF PRIME P0944 PRESENT (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT OPEN (T47) 2/4 PRESSURE SWITCH SENSE CIRCUIT OPEN (T47) 2/4 PRESSURE SWITCH CIRCUIT SHORT TO GROUND (T47) 2/4 PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE TRANSMISSION SOLENOID/PRESSURE SWITCH ASSEMBLY INTERNAL TRANSMISSION POWERTRAIN CONTROL MODULE Always perform the 42RLE Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - Theory of Operation Pressure switches are normally off or open (no pressure applied) and read high (+12 volts). When an element is Diagnostic Test 1. CHECKING FOR LOSS OF PRIME DTC With the scan tool, check for other Transmission DTCs. Is the DTC P0944 present also? Yes >> Refer to the Transmission category and perform the appropriate symptom. No >> Go To 2 2. CHECK FOR RELATED TRANSMISSION DTCS With the scan tool, read Transmission DTCs. Are any of the DTCs P0732, P0734 and/or P0846 present also? Yes >> Replace the Transmission Solenoid/Pressure Switch Assembly per the Service Information. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/ No >> Go To 3 21 - 140 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS KJ |