DTC U3000: Control Module: Description

The PSCM is self monitoring and carries 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 for the test to take place. If one or more of the self-tests fail, the module sets 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 6.5 volts supplied to the PSCM, DTC U3000:41 is 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, DTC U3000:49 is set.
• DTC U3000:62 (Control Module: Signal Compare Failure) - If the active nibble control external diagnostic test fails, DTC U3000:62 is set.
• DTC U3000:64 (Control Module: Signal Plausibility Failure) - If the PSCM detects active nibble control is disabled due to a software failure in the module, DTC U3000:64 is set.
• DTC U3000:96 (Control Module: Component Internal Failure) - This DTC is 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.