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Content .. 1993 1994 1995 1996 ..
• When Monitored: • Set Condition: Possible Causes (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN (T13) SENSOR GROUND CIRCUIT OPEN (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND (T14) OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE (T13) SENSOR GROUND CIRCUIT SHORT TO VOLTAGE OUTPUT SPEED SENSOR POWERTRAIN CONTROL MODULE Always perform the 42RLE Pre-Diagnostic Troubleshooting Procedure before proceeding. (Refer to 21 - 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 TO SEE IF DTC P0720 IS CURRENT Start the engine in park. Raise the drive wheels off of the ground. WARNING: Properly support the vehicle. WARNING: Be sure to keep hands and feet clear of rotating wheels. NOTE: The drive wheels must be turning at this point. Is the Output RPM below 100? Yes >> Go To 2 No >> Go To 9 2. PCM AND WIRING Turn the ignition off to the lock position. Remove the Starter Relay. CAUTION: Removal of the Starter Relay is to prevent a Transmission, NO RESPONSE, condition and disable Ignition on, engine not running. With the Transmission Simulator, set the 9 Input/Output Speed 9 switch to 9 ON 9 and the rotary switch to the 9 3000/ 1250 9 position. 21 - 514 AUTOMATIC TRANSMISSION 42RLE - ELECTRICAL DIAGNOSTICS LX |