TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Connect a jumper wire between ground and the Fuel Temperature Sensor Signal
circuit in the Fuel Injection Pump harness connector (vehicle side).
Turn the ignition on.
With the DRB, erase ECM DTCs and then read ECM DTCs.
Did DTC P0180-FUEL TEMPERATURE SENSOR SRC LOW EXCEEDED set?
All
Yes
→
Repair the Fuel Temperature Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
4
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance of the Fuel Temperature Sensor Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
5
No
→
Repair the Fuel Temperature Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD/Diesel Power
Relay connector.
Turn the ignition on.
Measure the voltage of the Fuel Temperature Sensor Signal circuit.
Is the voltage above 1.0 volt?
All
Yes
→
Repair the Fuel Temperature Sensor Signal circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
6
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.
43
DRIVEABILITY - DIESEL
P0180-FUEL TEMPERATURE SENSOR SRC HIGH EXCEEDED —
Continued