Specifications

TEST ACTION APPLICABILITY
2 Turn the ignition off.
Disconnect the ECM harness connectors.
Connect a jumper wire between ground and the Engine Control Relay Control circuit
in ECM C2 harness connector cavity 44.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Fused Engine Control Relay
Output circuits at the ECM C2 harness connector cavities 1, 3 and 5.
Choose the appropriate result.
All
Test light is on for all circuits.
Go To 3
Test light is on for 1 or 2 circuits
Repair the Engine Control Relay Output circuit(s) that did not
illuminate brightly for an open.
Perform ROAD TEST VERIFICATION - VER-2.
Light off for all circuits.
Refer to symptom Checking the ECM Power and Grounds.
Perform ROAD TEST VERIFICATION - VER-2.
3 Turn the ignition off.
Disconnect the Crankcase Vent Heater harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the both circuits between the Crankcase Vent Heater
harness connector and the ECM harness connector.
Is the resistance below 10.0 ohms for each measurement?
All
Yes → Go To 4
No → Repair the Crankcase Vent Heater circuit(s) for an open.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Disconnect the Crankcase Vent Heater harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between ground and both of the Crankcase Vent Heater
circuits.
Is the resistance above 1000 ohms for each circuit?
All
Yes → Go To 5
No → Repair the Crankcase Vent Heater circuit(s) for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
5 Turn the ignition off.
Disconnect the Crankcase Vent Heater harness connector.
Disconnect the ECM harness connectors.
Turn the ignition on.
Measure the voltage of the both Crankcase Vent Heater circuits.
Is the voltage below 1.0 volt for each circuit?
All
Yes → Go To 6
No → Repair the Crankcase Vent Heater circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
222
DRIVEABILITY - DIESEL
P2514-CRANKCASE VENT HEATER OPEN CIRCUIT — Continued