The Engine Control Module (ECM) monitors the crankshaft angular acceleration using the flywheel sensor. The ECM monitors the camshaft position sensor to determine the engine?s position. The ECM calculates the average value of crankshaft angular acceleration for all six cylinders and compares the value to each individual cylinder?s angular acceleration. If a cylinder?s acceleration value is outside a specified range the ECM interprets this as a misfiring cylinder. The crankshaft average angular acceleration value is used by the ECM to determine cylinder balancing and idle speed. Conditions for diagnostic trouble code (DTC):1) Engine Speed at idle, Below normal Observable symptoms1)...

If code PID 190 is displayed, the engine has been over speeding. The engine could be running on engine oil from a faulty crankcase oil filter or worn engine piston rings. The engine speed will be limited to approximately 1200 rpm and the (VCB) Volvo Compression Brake will be activated to lower the engine speed. Diagnose and repair the engine over speed condition. Conditions for diagnostic trouble code (DTC):1) Engine speed too high Observable symptoms1) Unit Injector, Cut-Out Probable cause1) Wrong gear may be engaged (when engine braking)2) The engine is running on engine oil Detailed information1) The diagnostic trouble...

Conditions for diagnostic trouble code (DTC):1) Missing signal from the transmission ECM Probable cause1) Data link error Volvo All Engines (2010 Emissions) Fault Code: SPN 190 FMI 0 PID: Engine Speed – Moderately Severe Level Volvo All Engines (2010 Emissions) Fault Code: SPN 188 FMI 1 PID: Engine Speed at Idle, Point 1 Volvo All Engines (2010 Emissions) Fault Code: SPN 188 FMI 0 PID: Engine Speed at Idle, Point 1 Volvo All Engines (2010 Emissions) Fault Code: SPN 177 FMI 16 PID: Transmission Oil Temperature – Moderately Severe Level Volvo All Engines (2010 Emissions) Fault Code: SPN 177 FMI...

The cruise control status together with the vehicle speed and calculation of fuel injection are used to maintain the vehicle set speed.The J1587 and J1939 serial data lines are used as the standard communication link for on-board vehicle instrumentation, off-board service diagnostics and fleet management.The (VECU) Vehicle Electronic Control Unit is linked to the Engine Control Module (ECM) via these data lines. Conditions for diagnostic trouble code (DTC):1) Signal unavailable or not regularly updated Observable symptoms1) Cruise control does not function Probable cause1) Electronic control unit (ECU), adaptive cruise control (ACC)2) Vehicle Control Unit (VECU) Volvo All Engines (2010 Emissions)...

The system uses the J1939 data links to control functions and communicates between the vehicle electronic control unit (ECU), the engine control module (ECM), the instrument cluster module and accessory systems, depending on vehicle model and option content.The J1939 data lines consist of an expandable data bus allowing the addition of accessory control modules. The J1939 data lines are the primary data bus. Data is prioritized and then transmitted across the J1939 data lines to the appropriate control module. Conditions for diagnostic trouble code (DTC):1) Message missing on J1939 from the following electronic control unit (ECU): Instrument cluster Observable symptoms1)...