TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the PCM ECT Sensor harness connector.
Connect a jumper wire between ground and the PCM ECT Sensor Signal circuit.
Turn the ignition on.
With the DRB, read the PCM ECT Sensor voltage.
Is the voltage below 1.0 volt?
All
Yes
→
Repair the PCM ECT Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Go To
5
5
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the PCM ECT Sensor harness connector.
Measure the resistance of the PCM ECT Sensor Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Go To
6
No
→
Repair the PCM ECT Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
7
WARNING: KEEP CLEAR OF THE ENGINE’S MOVING PARTS.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Test Complete.
44
DRIVEABILITY - DIESEL
P0118-ECT SENSOR VOLTAGE TOO HIGH —
Continued