Paccar

PACCAR MX (2004 Emissions) Fault Code: P3101 Coolant Pump Speed – Data Valid but Too Low, When Low Speed is Requested SET CONDITIONS:The PCI ECU (D420) detects that the average coolant pump speed is 400 rpm lower than expected for more than 5 seconds when the pump is controlled to run at low speed. DIAGNOSTIC CONDITION:This diagnostic runs continuously when the engine is running and the coolant pump is activated to run at low speed. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC will change to inactive after the ignition is keyed off and on again and the diagnostic runs and...

PACCAR MX (2004 Emissions) Fault Code: P3405 MX Engine Brake Solenoid Valve Cylinder 1-3 – Current Too Low or Open Circuit on ECU (D420) Pin (A17) SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects a too low current on the control circuit for engine brake activation. DIAGNOSTIC CONDITION:This diagnostic runs during activation of the engine brake. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.3. Did the DTC come back?– No,...

PACCAR MX (2004 Emissions) Fault Code: P3407 MX Engine Brake Solenoid Valve Cylinder 1-3 – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A17) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.3. Did the DTC...

PACCAR MX (2004 Emissions) Fault Code: P3408 MX Engine Brake Solenoid Valve Cylinder 1-3 – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A17) CORRESPONDING OBD READINESS MONITOR:None REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.3. Did the DTC come back?– No, repair successful– Yes, repair unsuccessful

PACCAR MX (2004 Emissions) Fault Code: P3413 MX Engine Brake Solenoid Valve Cylinder 2 – Current Too Low or Open Circuit on ECU (D420) Pin (A16) SET CONDITIONS:This DTC is set when the PCI ECU (D420) detects a too low current on the control circuit for engine brake activation. DIAGNOSTIC CONDITION:This diagnostic runs during activation of the engine brake. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.3. Did the DTC come back?– No,...