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AUTOMATIC TRANSMISSION DIAGNOSIS TSB Revision AUTOMATIC TRANSMISSION 23A-309 STEP 4. Disassemble and clean the valve body. Check the O-ring installation bolts for looseness and valve . Replace the valve body assembly if the damages are thought YES : The procedure is complete. STEP 5. Replace the PCM. YES : Go to Step 6. STEP 6. Overhaul the A/T. (1) Replace the following parts. • If DTC 41, 42, or 43 are set individually or in a group, replace the underdrive clutch. Refer to GROUP 23B, . • If DTC 43 or 44 are set individually or in a group, replace the overdrive clutch. Refer to GROUP 23B, Reverse • If DTC 46 is set individually or in a group, replace the reverse clutch. Refer to GROUP 23B, Reverse and . • If DTC 41 or 46 are set individually or in a group, replace the low-reverse brake. Refer to GROUP 23B, Transmis- • If DTC 42 or 44 are set individually or in a group, replace the second brake. Refer to GROUP 23B, Transmission . • If DTC 41 is set individually or in a group, replace the one-way clutch. Refer to GROUP 23B, Low Reverse (2) Test drive the vehicle. YES : An A/T DTC may have set due to external radio frequency interference (RFI) possibly caused by NO : The procedure is complete. AC004272 VALVE BODY ASSEMBLY AB AC103774 REVERSE SECOND BRAKE LOW-REVERSE UNDERDRIVE AD ONE-WAY CLUTCH OVERDRIVE CLUTCH |