TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between ground and the Fuel Timing Solenoid Control
circuit.
Is the resistance above 100 kohms?
All
Yes
→
Go To
4
No
→
Repair the Fuel Timing Solenoid Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance of the Fuel Timing Solenoid Control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
5
No
→
Repair the Fuel Timing Solenoid Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance of the Fuel Timing Solenoid at the Fuel Injection Pump
connector (fuel pump side) between cavities 5 and 10.
Is the resistance between 12.0 and 20.0 ohms?
All
Yes
→
Go To
6
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
6
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between the following cavities in the Fuel Injection Pump
connector (fuel pump side):
Cavity 1 to cavities 4, 5, 6, 7, 8, 9, and 10.
Cavity 4 to cavities 5, 6, 7, 8, 9, and 10.
Cavity 5 to cavities 6, 7, 8, and 9.
Cavity 7 to cavities 6, 8, 9, and 10.
Cavity 8 to cavities 6 and 10.
NOTE: The resistance should be above 100 ohms for all measurements.
Is the resistance above 100 ohms for each of the measurements?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
7
Remove and inspect the ASD Relay Output Fuse from the PDC.
Is the fuse OK?
All
Yes
→
Repair the Fused ASD Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
8
176
DRIVEABILITY - DIESEL
P1630-SOLENOID VALVE CONTROLLER OPEN CIRCUIT —
Continued