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P0871-OD PRESSURE SWITCH RATIONALITY (CONTINUED) 12. CHECK TO SEE IF DTC RESETS Reconnect all previously disconnected connectors. With the scan too, erase transmission DTCs. Test drive the vehicle, use the EATX DTC EVENT DATA recored earlier to help duplicate the conditions when the Does the DTC P0871 reset? Yes >> Go To 13 No >> Go To 22 13. POWERTRAIN CONTROL MODULE Remove the Transmission Control Relay. Operate the vehicle in Drive. Is the transmission slipping while in Drive? Yes >> Go To 14 No >> Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 14. INTERNAL TRANSMISSION Perform an Air Check Transmission Clutch Operation procedure per the Service Information. NOTE: The OD/Rev piston contains a small bleed orifice, a small amount of leakage between the OD and Is there excessive air leakage in any clutch circuit? Yes >> Check the OD/Rev piston seals and bleed orifice, reaction shaft support seal rings, dribbler orifice assemblies in the reaction shaft support and for poor machine on the pump valve body faces. Refer to Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Repair the Valve Body. Check the OD Accumulator piston and seals, OD bleed orifice, and No.6 check ball cuts or damage. If no problems are found in the Valve Body, replace the Transmission Solenoid/ Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. HB AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS 21 - 497 |