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P0871-OD PRESSURE SWITCH RATIONALITY (CONTINUED) 15. PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. NOTE: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable the NOTE: Check connectors - Clean/repair as necessary. With the Transmission Simulator, turn the Pressure Switch selector switch to OD. With the scan tool, monitor the OD Pressure Switch state while pressing the Pressure Switch Test button on the Did the state of the OD Pressure Switch change from OPEN to CLOSED while pressing the Test button? Yes >> Go To 16 No >> Go To 18 16. NO. 4 AND/OR NO. 6 CHECK BALL CUT OR DAMAGED With the scan tool, erase previously stored DTC’s and test drive the vehicle, use the EATX DTC EVENT DATA to Remove the Transmission Valve Body per the Service Information. Check the No. 4 and No. 6 Check Balls for cuts or damage. Is the No. 4 and/or No. 6 Check Ball cut or damaged? Yes >> Replace the No. 4 and/or No. 6 Check Ball and check for clutch debris in the transmission oil pan. If there is excessive debris, perform internal repairs to the OD Clutch Assembly. Refer to the Service Infor- Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 17 17. TRANSMISSION SOLENOID/TRS ASSEMBLY Did the DTC P0871 reset during the test drive in the previous step? Yes >> Replace the Transmission Solenoid/TRS Assembly per the Service Information. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 22 21 - 174 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |