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P0875-UD HYDRAULIC PRESSURE TEST (CONTINUED) 11. WIRING AND CONNECTORS Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Failure to remove the Starter Relay can cause a Transmission - No Response condition. Install the Transmission Simulator, Miller tool #8333. On the Transmission Simulator, turn the Pressure Switch selector switch to UD. Ignition on, engine not running. With the scan tool, monitor the UD Pressure Switch state while pressing and holding the Pressure Switch test but- Did the UD Pressure Switch state change to closed and remain closed while wiggling the wires? Yes >> Go To 12 No >> Go To 14 12. CHECK FOR EXCESSIVE DEBRIS Turn the ignition off to the lock position. Remove the Transmission Simulator, Miller tool #8333. Remove and inspect the Transmission Oil Pan per the Service Information. Does the Transmission Oil Pan contain excessive debris or contamination? Yes >> Repair the cause of the excessive debris in the Transmission Oil Pan. Refer to the Service Information for the proper procedures. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 13 13. CHECK UD HYDRAULIC CLUTCH CIRCUIT Remove the Valve Body and air check the UD hydraulic clutch circuit (in the case) for leakage per the Service NOTE: The UD hydraulic clutch circuit contains a small bleed orifice. A small amount of air leakage is nor- Was there excessive air leakage noticed during the air check? Yes >> Repair as necessary. Check the UD clutch piston, piston seals and bleed orifice, reaction shaft support seal rings, and machining of the main mating faces of the pump housing, pump valve body, and reaction Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Disassemble and inspect the Valve Body and repair as necessary. Inspect the UD Accumulator piston and seals. If no problems are found in the Valve Body, replace the Transmission Solenoid/TRS Assem- Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 21 - 182 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |