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P0733-GEAR RATIO ERROR IN 3RD For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes RELATED TRANSMISSION DTCS PRESENT INTERMITTENT GEAR RATIO ERRORS TRANSMISSION SOLENOID/PRESSURE SWITCH ASSEMBLY INTERNAL TRANSMISSION 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. Diagnostic Test 1. CHECK IF RELATED TRANSMISSION DTCS ARE PRESENT With the scan tool, read Transmission DTCs. If any of these DTCs are present, perform their respective tests first. Are there any Loss of Prime, Line Pressure Sensor and/or Speed Sensor DTCs present? Yes >> Refer to appropriate diagnostic procedure in the Transmission category. If any of these DTCs are present, they will cause a gear ratio error. Perform the test for Loss of Prime first if it is present. Perform 42RLE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMISSION/ No >> Go To 2 2. CHECK IF THE DTC IS CURRENT With the scan tool, perform the 3rd gear clutch test. Follow the instructions on the scan tool. Increase the throttle angle or TPS Degree to 30° for no more than a few seconds. CAUTION: Do not overheat the transmission. Did the Clutch Test pass, Input Speed remain at zero? Yes >> Go To 3 No >> Go To 4 21 - 108 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS KJ |