DTC U3000: Control Module: Description

The PSCM is self monitoring and will carry out self-tests at specific intervals (initial power up, power down, during normal operation, etc.). Each self-test requires the voltage supply to the PSCM to be at or above a specific level (above 6 volts, above 9 volts, between 10 and 17 volts, etc.) for the test to take place. If one or more of the self-tests should fail, then the module will set one or more DTCs.

• DTC U3000:41 (Control Module: General Checksum Failure) - If at any time during normal operation the module detects an internal software error with more than 6 volts supplied to the PSCM, then DTC U3000:41 will be set.
• DTC U3000:46 (Control Module: Calibration/Parameter Memory Failure) - At any time during normal operation with more than 6 volts supplied to the PSCM the module determines that one or more calibration files are missing or that they are corrupt or that the incorrect EPAS gear is installed on the vehicle, then DTC U3000:46 will be set.
• DTC U3000:49 (Control Module: Internal Electronic Failure) - If at any time during normal operation with more than 6 volts supplied to the PSCM, the module detects a software or internal hardware error then DTC U3000:49 will be set.
• DTC U3000:61 (Control Module Signal Calculation Failure) - If the PSCM detects that assist torque calculation is faulty due to a software failure in the module, then DTC U3000:61 will be set.
• DTC U3000:72 (Control Module Actuator Stuck Open) - During initial power up with voltage greater than 9 volts, the PSCM will check the internal relay for voltage. If voltage is not present the module will make several attempts to close the relay. If the voltage remains undetected after this test period, then DTC U3000:72 will be set.
• DTC U3000:96 (Control Module: Component Internal Failure) - This DTC will set if there is an internal failure of the PSCM due to temperature, power supply or if multiple failures have occurred over a short period of time.