TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Cylinder Fuel Injector harness connectors.
Measure the resistance between ground and the Common Driver circuit.
Is the resistance below 1000 ohms?
All
Yes
→ Repair the Common Driver circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Cylinder Fuel Injector harness connectors.
Measure the resistance between each of the Fuel Injector Control circuits and the
Common Driver circuit.
Is the resistance below 1000 ohms for any of the measurements?
All
Yes
→ Repair the Fuel Injector Control circuit and Common Driver
circuit for a short together.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Cylinder Fuel Injector harness connectors.
Measure the resistance of each Fuel Injector Control circuit between its respective
injector harness connector and the ECM harness connector.
Is the resistance below 10.0 ohms for each measurement?
All
Yes
→ Go To 8
No
→ Repair the appropriate Fuel Injector Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Cylinder Fuel Injector harness connectors.
Measure the resistance of each Common Driver circuit between the ECM harness
connector and each Fuel Injector harness connector.
Is the resistance below 10.0 ohms for each measurement?
All
Yes
→ Go To 9
No
→ Repair the Common Driver circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
9
Turn the ignition off.
Replace the Cylinder Fuel Injector in accordance with the Service Information.
With the DRBIII
t, erase the ECM DTCs.
Test drive the vehicle.
With the DRBIII
t, read the ECM DTCs.
Does the DRBIII
t display this DTC?
All
Yes
→ Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ The repair is complete.
Perform ROAD TEST VERIFICATION - VER-2.
43
DRIVEABILITY - DIESEL
P0201-CYLINDER 1-INJECTOR CIRCUIT CURRENT DECREASE —
Continued