Volvo

Electronic Viscous Fan: The Electronic Fan Drive contains a solenoid that controls the flow of fluid between reservoirs in the fan drive housing and cover. The Engine Control Module (ECM) provides a (PWM) Pulse Width Modulation signal to the solenoid and controls solenoid operation to optimize fan speed, based on coolant temperature, intake air temperature and A/C load. Conditions for diagnostic trouble code (DTC):1) The fan solenoid valve is activated because the control wire is shorted to ground2) Short circuit to ground on A14.EB:49 Observable symptoms1) Engine fan permanently disengaged2) High engine coolant temperature (ECT) Probable cause1) Solenoid valve, engine...

Electronic Viscous Fan: The Electronic Fan Drive contains a solenoid that controls the flow of fluid between reservoirs in the fan drive housing and cover. The Engine Control Module (ECM) provides a (PWM) Pulse Width Modulation signal to the solenoid and controls solenoid operation to optimize fan speed, based on coolant temperature, intake air temperature and A/C load. Conditions for diagnostic trouble code (DTC):1) The voltage at pin A14:A14.EB:49 is below normal value Observable symptoms1) Engine fan constantly engaged2) High fuel consumption Probable cause1) Solenoid valve, engine fan2) Open circuit on signal wire3) Open circuit in the voltage supply, Solenoid...

Fuel Injector operation is controlled by the Engine Control Module (ECM). The ECM provides a common supply voltage to injectors 1,2,3 (Bank 1) and there are individual output transistor drivers inside the ECM to control each individual injector?s ground circuits. There are two solenoid circuits within the injector; a Needle Control Valve and a Spill Valve. Although they are separate circuits, the same fault code is used to identify a fault in the Needle Control Valve circuit and/or the Spill Valve circuit. Conditions for diagnostic trouble code (DTC):1) Resistance too high2) Injector (INJ) activated Observable symptoms1) Low Power2) Uneven operation3)...

Fuel Injector operation is controlled by the Engine Control Module (ECM). The ECM provides a common supply voltage to injectors 1,2,3 (Bank 1) and there are individual output transistor drivers inside the ECM to control each individual injector?s ground circuits. There are two solenoid circuits within the injector; a Needle Control Valve and a Spill Valve. Although they are separate circuits, the same fault code is used to identify a fault in the Needle Control Valve circuit and/or the Spill Valve circuit. Conditions for diagnostic trouble code (DTC):1) Injector (INJ) activated2) Cylinder balancing data too high Observable symptoms1) Low Power2)...

Conditions for diagnostic trouble code (DTC):1) Unexpected electrical response Observable symptoms1) Power loss Probable cause1) Injector 12) EGR System3) Fuel Quality4) Low compression Volvo All Engines (2010 Emissions) Fault Code: SPN 651 FMI 13 PID: SID 1 Engine Injector Cylinder 1 Volvo All Engines (2010 Emissions) Fault Code: SPN 651 FMI 12 PID: SID 1 Engine Injector Cylinder 1 Volvo All Engines (2010 Emissions) Fault Code: SPN 647 FMI 5 PID: SID 33 Engine Fan Clutch Output Device Driver Volvo All Engines (2010 Emissions) Fault Code: SPN 647 FMI 4 PID: SID 33 Engine Fan Clutch Output Device Driver Volvo...