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7A1–54 TRANSMISSION CONTROL SYSTEM (4L30–E) D The PCM will illuminate the CHECK TRANS Lamp. D Turn force motor OFF. Conditions For Clearing The DTC/CHECK D The PCM will turn “off” the CHECK TRANS Lamp D The DTC can be cleared from PCM memory by using D The DTC can also be cleared from memory when the D The PCM will cancel the DTC Actions Taken items Diagnostic Aids D Check for intermittent output speed sensor circuit D Check for possible incorrect calibration. (PCM part Test Description The numbers below refer to the step numbers on the slipping resulting in an undefined gear ratio. 4. This step checks for correct gear ratios for commanded gears. 5. This step checks for low line pressure. DTC P0730 Gear Error Without Input Speed Step Action Yes No 1 Were you sent here from the “On–Board Diagnostic (OBD) Go to Step 2 Go to OBD System Check Refer to Driveability and Emission in Engine section 2 Visually inspect the transmission cooling system for fluid leaks. D Refer to Chart 16: Possible Causes of Transmission Fluid Was condition found and corrected? Go to Step 7 Go to Step 3 3 Refer to Checking Transmission Fluid Level and Condition in Has transmission fluid checking procedure been performed? Go to Step 4 Go to Checking Transmission Fluid Level and Condition in Automatic Transmission (4L30–E) section 4 1. Install the scan tool. NOTE: Before clearing DTC(s) use the scan tool to record the 4. Record the Failure Record data. ratios. 6. Drive vehicle in transmission gear ranges 1, 2, 3, and D with the engine speed is greater than 3,500 rpm for 5.5 seconds. 7. Record each transmission gear. 1st:2.73 – 2.99 Does commanded gear ratio match ranges as shown? Refer to Diagnostic Aids Go to Step 5 |