COMPUSHIFT II Manual – COMPUSHIFT II Manual
Diagnostics & Troubleshooting
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6.2.6 Transmission Over Temp
Indicates your transmission is running too hot.
6.2.7 EEPROM Fault
Indicates the internal memory system of your COMPUSHIFT II Controller has suffered a failure.
6.2.8 System Voltage Low
Indicates COMPUSHIFT II detects that the 12-volt power supply has dropped
too low
for an extended period.
If you have an indication of this fault, make sure your COMPUSHIFT II has a good connection to 12-volt
power and ground, and that your battery is fully charged.
6.2.9 System Voltage High
Indicates that COMPUSHIFT II detects that the 12-volt power supply has
exceeded
the normal operating range.
6.2.10 Invalid PRNDL
Indicates an invalid signal combination has been received from the transmission gear selector (PRNDL) switch.
Turn off your vehicle as soon as possible as transmission damage is imminent. This fault is triggered when
transmission temperature exceeds 275°F / 135°C for 10 seconds or more.
Contact HGM Automotive Electronics for repair or replacement of your Controller.
This condition can damage COMPUSHIFT II and other components in your vehicle. This fault usually
indicates a failure of the vehicle charging system.
Do
not
disconnect your battery while the vehicle engine is running. Doing so could damage COMPUSHIFT II
and any other vehicle electronics.
Faulty wiring, a failed switch, or a hydraulic problem in the transmission can cause this.
