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P0845-2/4 HYDRAULIC PRESSURE TEST (CONTINUED) For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 42RLE - SCHE- For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes LOSS OF PRIME P0944 PRESENT (T16) TRANSMISSION CONTROL RELAY 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 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- 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 diagnostic procedure. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 2 21 - 168 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS ND |