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P0736-GEAR RATIO ERROR IN REVERSE For the Transmission circuit diagram (Refer to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC - 45RFE/545RFE - For a complete wiring diagram Refer to Section 8W • When Monitored: • Set Condition: Possible Causes LOW FLUID LEVEL CUT LR TOWER SEAL ON MAIN VALVE BODY CUT LR CLUTCH PISTON SEALS BROKEN OR MISSING LR CLUTCH BLEED ORIFICE (IN LR CLUTCH RETAINER) CUT LR ACCUMULATOR PISTON SEAL IN MAIN VALVE BODY CRACKED LR ACCUMULATOR PISTON IN MAIN VALVE BODY CUT OD/REV PISTON SEALS BROKEN OR MISSING OD/REV BLEED ORIFICE (IN OD/REV CLUTCH PISTON) BROKEN REVERSE CARRIER HUB WELD BROKEN REVERSE SUN GEAR WELD TO THE REACTION CARRIER Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - TRANSMIS- Theory of Operation The transmission system uses two speed sensors, one to measure input RPM and one to measure output RPM. 1) Once in a particular gear, if the gear ratio varies from the correct gear ratio, the corresponding in-gear trouble 2) An excessive change in input or output speeds indicating signal intermittent may result in the DTCs P0715 and/or 3) If the common speed sensor ground circuit is lost, both sensor inputs will read the pulses from the input speed Diagnostic Test 1. DETERMINING IF RELATED DTC’S ARE PRESENT With the scan tool, check for other transmission DTC’s Are there any Transmission; solenoid, line pressure, speed sensor, and/or loss of prime DTC’s present? Yes >> Refer to appropriate symptom in the Transmission category. Perform the test for P0944–LOSS OF PRIME first if it is present. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 2 21 - 98 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS WK |