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Theory of Operation The Input Speed Sensor 1 (N2) is one of two hall effect speed sensors that are used by the Transmission Control • When Monitored: • Set Condition: Possible Causes (T72) SENSOR SUPPLY VOLTAGE CIRCUIT OPEN (T70) INPUT SPEED SENSOR 1 (N2) SIGNAL CIRCUIT OPEN (T70) SPEED SENSOR 1 (N2) SIGNAL CIRCUIT SHORT TO ANOTHER CIRCUIT (T13) SENSOR GROUND CIRCUIT OPEN (T13) SENSOR GROUND CIRCUIT SHORT TO ANOTHER CIRCUIT (T70) SPEED SENSOR 1 (N2) SIGNAL CIRCUIT SHORT TO GROUND (T13) SENSOR GROUND CIRCUIT SHORT TO GROUND SPEED SENSOR 1 (N2) TRANSMISSION CONTROL MODULE Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 21 - Diagnostic Test 1. CHECK IF DTC IS CURRENT NOTE: The Transmission Control Module stores under Environmental Data the transmission operating con- Using the Environmental Data previously recorded, drive the vehicle and try to duplicate the conditions in which the Does the DTC reset? Yes >> Go To 2 No >> Go To 10 21 - 42 AUTOMATIC TRANSMISSION NAG1 - ELECTRICAL DIAGNOSTICS LX |