CUSTOMER CONCERN The brake accumulator has low pressure, DTC C1256 is stored, and the accumulator pump does not run. CAUSE Power and ground were present at the hydraulic unit, confirming an internal brake actuator assembly failure. CORRECTION Remove and replace the failed brake actuator assembly, perform the required brake-system bleed and calibration procedures, clear DTC C1256, and verify normal accumulator-pump and brake-system operation.

CUSTOMER CONCERN Check-engine warning is on with DTC P2602, and replacing the inverter water pump did not stop the code from returning. CAUSE P2602 applied to the transaxle oil-circulation pump rather than the inverter coolant pump. Power, ground and control-circuit testing identified the transmission oil-pump assembly as the failed component. CORRECTION Remove and replace the transmission oil-pump assembly, clear DTC P2602, and verify transaxle oil-pump operation.