5.4 Using the Overdrive Cancel Switch (Optional) ..................................................................... 73
6 Diagnostics & Troubleshooting ........................................................................74
6.1 Status LED and Display .......................................................................................................... 74
6.2 Faults ...................................................................................................................................... 74
6.2.1 Driver Fault ........................................................................................................................................................... 74
6.2.2 TPS Signal Low..................................................................................................................................................... 75
6.2.3 TPS Signal High .................................................................................................................................................... 75
6.2.4 Both TPS Signal Low & TPS Signal High.............................................................................................................. 75
6.2.5 Transmission Temp Sensor ................................................................................................................................. 75
6.2.6 Transmission Over Temp..................................................................................................................................... 76
6.2.7 EEPROM Fault....................................................................................................................................................... 76
6.2.8 System Voltage Low............................................................................................................................................. 76
6.2.9 System Voltage High ............................................................................................................................................ 76
6.2.10 Invalid PRNDL....................................................................................................................................................... 76
6.2.11 System Over Temp............................................................................................................................................... 77
6.3 System Diagnostics................................................................................................................ 77
6.3.1 Shift Pressure ....................................................................................................................................................... 77
6.3.2 Shift Solenoids ..................................................................................................................................................... 77
6.3.3 Torque Converter Clutch ..................................................................................................................................... 77
6.3.4 Gear Lever Position.............................................................................................................................................. 78
6.3.5 Transmission Temperature ................................................................................................................................. 78
6.3.6 Transmission Output Shaft Speed ...................................................................................................................... 78
6.3.7 Switch Input Diagnostics ..................................................................................................................................... 78
6.3.8 Voltage Input Diagnostics.................................................................................................................................... 78
6.3.9 Speed Input Diagnostics...................................................................................................................................... 78
6.3.10 Switch Output Diagnostics .................................................................................................................................. 78
6.3.11 Software Version .................................................................................................................................................. 78
7 Additional Guides & Information......................................................................79
7.1 Changing a Wiring Harness Terminal.................................................................................... 79
7.2 COMPUSHIFT II Quick Install Guide....................................................................................... 80
7.3 Installing the Transmission Pressure Sensor........................................................................ 80
7.3.1 Typical Installation .............................................................................................................................................. 81
7.3.2 ZF4HP24 ............................................................................................................................................................... 81
7.4 Installing the Six Shooter Acculink........................................................................................ 83
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