Service Manual

ECM Cooling Plate, Fuel Cooled ISB, ISBe and QSB (Common Rail [...]
Page 6-8 Section 6 - Injectors and Fuel Lines - Group 06
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Observe the fuel flow exiting the diagnostic fuel line while
the engine runs at idle.
If air continues to bubble through the clear hose for
several minutes, then an air leak is present.
ECM Cooling Plate, Fuel Cooled
(006-006)
General Information
NOTE: Engines with electric lift pumps use passages
within the ECM cooling plate to cool the ECM; the fuel is
not in direct contact with the backside of the ECM. On
engines without an electric lift pump, the fuel entering the
ECM cooling plate directly contacts the rear side of the
ECM. For this reason, a gasket is required between the
ECM and the cooling plate for engines without an electric
lift pump. For engines with an air cooled ECM cooling
plate, Refer to Procedure Procedure 019-002
Initial Check
Check the electronic control module (ECM) cooling plate
for leaks, damaged isolators, or loose capscrews.
NOTE: Clean around ECM cooling plate fuel line
connections. Dirt or contaminants can damage the fuel
system.
Preparatory Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
Disconnect the batteries.