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Home >> Volvo >> 1999 >> S70 Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - S70 & V70 Non-Turbo >> Diagnostic Tests >> P0600/ECM-901A: Communication Control Module, Communication Problems >> Fault Conditions
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Fault Conditions

The control modules communicate with each other in a network via a standardized serial communication method - Controller Area Network (CAN). The engine ECM has registered a fault in the communication on the CAN network. DTC ECM-901A is stored in the ECM.

No substitute value is used. Accelerator pedal is ignored when braking Cruise control cannot be activated. RPM is limited using fuel shut off. Maximum permitted engine speed depends on accelerator pedal position. Throttle unit follows pulse width modulation accelerator pedal signal directly and control signal via CAN is ignored.

ETS warning lamp lit while ECM-901A is set. DTC can also cause uneven idle and jerking during engine braking.