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P0736-GEAR RATIO ERROR IN REVERSE (CONTINUED) 2. CHECK TO SEE IF DTC IS CURRENT With the scan tool, perform the Reverse Gear Clutch test. Follow the instructions on the scan tool. Increase the throttle angle, TPS degree, to 30°, for no more than a few seconds. CAUTION: Do not overheat the transmission. NOTE: Make sure to record all EATX DTC EVENT DATA stored in the scan tool for future reference in this Did the clutch test pass, input speed remain at zero? Yes >> Go To 3 No >> Go To 4 3. CHECK DTC EVENT DATA The conditions necessary to set this DTC are not currently present. With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set. Does the DTC EVENT DATA show an input speed reading of zero? Yes >> Go To 8 No >> Go To 4 4. POSSIBLE INTERNAL TRANSMISSION CAUSES Remove the Transmission Oil Pan and Valve Body and check the following per the Service Information: Clutch or metal debris in the pan LR clutch tower seal on the main valve body or cuts and the LR accumulator piston and seals. Air check the Reverse and LR Hydraulic Clutch circuits (in the case) for excessive air leakage. NOTE: Both Hydraulic Clutch circuits contain a small bleed orifice , a small amount of air leakage is normal. Were there any problems found? Yes >> Repair as necessary. If clutch debris is present, remove the transmission and inspect the Reverse and LR clutches, and inspect the Transmission Oil Pump and Main Regulator Valve for damage or sticking Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. No >> Go To 5 5. CLUTCH TEST FAILURE Did the clutch test fail in reverse? Yes >> Go To 6 No >> Test complete. 21 - 492 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS ND |