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P0988-4C PRESSURE SWITCH RATIONALITY (CONTINUED) 15. #5 AND/OR #7 CHECK BALL CUT OR DAMAGED Turn the Ignition off to the lock position. Remove the Valve Body Assembly per the Service Information. Inspect the #5 and #7 check balls for any cuts or damage. Inspect the 4C accumulator piston and seals and also the 4C tower seal on top of the valve body. Refer to the Where there any problems found? Yes >> Repair as necessary. Check for excessive clutch debris in the transmission oil pan. If excessive clutch debris is present, repair 4C clutch as necessary. Refer to the Service Information for proper repair pro- Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 16 16. EXCESSIVE FLUID LEAKAGE WITH 4C CLUTCH CIRCUIT Air check the 4C Clutch hydraulic circuit. Refer to the Service Information. NOTE: This hydraulic clutch circuit contains a small bleed orifice. Small leakage is considered normal. Was there excessive air leakage in the 4C Clutch hydraulic circuit? Yes >> Repair as necessary. Refer to the Service Information. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. 21 - 250 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |