PACCAR MX (2004 Emissions) Fault Code: P2600 Coolant Pump – Open Circuit on ECU (D420) Pin (C1)
PACCAR MX (2004 Emissions) Fault Code: P2600 Coolant Pump – Open Circuit on ECU (D420) Pin (C1)
DIAGNOSTIC CONDITION:
This diagnostic runs continuously when the ignition is on.
ADDITIONAL INFORMATION:
1. The two-stage clutch coolant pump can run at two different speeds. At high speed, the pump is driven directly by the crankshaft with the poly-V-belt ratio. Low speed is approximately 50% of high speed.
2. When this DTC is active the coolant pump only runs at low speed.
3. P00B7 may also become active when the coolant pump is controlled to run at high speed.
