DTC U3004: Accessory Power Relay: Description

The PSCM is self monitoring and performs 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 between 10 and 16 volts and the vehicle speed to be below 2 km/h (1.24 mph) for the test to take place. If one or more of the self-tests should fail, the module sets one or more DTCs.

• DTC U3004:49 (Accessory Power Relay: Internal Electronic Failure) - If a fault is detected with the EPAS internal relay, DTC U3004:49 is set.