The (VECU) Vehicle Electronic Control Unit supplies and monitors the cranking signal to the starter motor relay. Several types of starter cranking protection are provided so the starter cannot be engaged in unwanted conditions. The starter cranking protection will also limit the maximum cranking time to 18 seconds without cycling the key. Conditions for diagnostic trouble code (DTC):1) Power take-off activated Observable symptoms1) Not possible to activate the starter motor Probable cause1) Power take-off switch Detailed information1) Put the power take-off switch in off position and try to start again Volvo All Engines (2010 Emissions) Fault Code: SPN 1675 FMI...

The (VECU) Vehicle Electronic Control Unit supplies and monitors the cranking signal to the starter motor relay. Several types of starter cranking protection are provided so the starter cannot be engaged in unwanted conditions. The starter cranking protection will also limit the maximum cranking time to 18 seconds without cycling the key. Conditions for diagnostic trouble code (DTC):1) Transmission is not in neutral position2) Gear selector not in neutral3) Only for automatic transmission Observable symptoms1) Not possible to activate the starter motor Probable cause1) Transmission2) Gear selector Detailed information1) Put the gear selector in neutral position and try to start...

The Periodic Heat Mode (PHM) is used to burn off hydrocarbons and ventilate vapours that have collected in the aftertreatment diesel particulate filter (DPF) after extended idle periods. If the PHM process does not function, the aftertreatment diesel particulate filter (DPF) may crack when regeneration begins because of the accumulated hydrocarbons. Conditions for diagnostic trouble code (DTC):1) Vehicle idle time without Periodic Heat Mode is critically too long Observable symptoms1) White/gray smoke2) High temperature spikes in the aftertreatment diesel particulate filter (DPF), when resuming driving or stationary aftertreatment DPF regenerations3) Low Power Probable cause1) Extended idling in extremely cold ambient...

The Periodic Heat Mode (PHM) is used to burn off hydrocarbons and ventilate vapours that have collected in the aftertreatment diesel particulate filter (DPF) after extended idle periods. If the PHM process does not function, the aftertreatment diesel particulate filter (DPF) may crack when regeneration begins because of the accumulated hydrocarbons. Conditions for diagnostic trouble code (DTC):1) Vehicle idled too long without Periodic Heat Mode operation Observable symptoms1) White/gray smoke2) High temperature spikes in the aftertreatment diesel particulate filter (DPF), when resuming driving or stationary aftertreatment DPF regenerations Probable cause1) Extended idling in extremely cold ambient air temperature conditions2) Idling...

The ambient air temperature signal is sent to the instrument cluster module. The instrument cluster module then transmits the ambient air temperature data to the Engine Control Module (ECM) via the J1939 data lines. Conditions for diagnostic trouble code (DTC):1) Communications error Probable cause1) Instrument cluster2) Ambient air temperature sensor Volvo All Engines (2010 Emissions) Fault Code: SPN 1677 FMI 16 PID: PSID 25 Aftertreatment DPF Auxillary Heater Mode – Moderately Severe Level Volvo All Engines (2010 Emissions) Fault Code: SPN 1677 FMI 0 PID: PSID 25 Aftertreatment DPF Auxillary Heater Mode Volvo All Engines (2010 Emissions) Fault Code: SPN...