Symptom Related Diagnostic Procedures

Symptom Chart

NOTE: Also refer to Powertrain Management for additional DTC information.

Condition(s):
DTC P0116 ECT circuit range /performance problem
Possible Source(s):
- Thermostat
- Coolant level/contamination
- Sensor out of range
- Harness open circuit
- Connector loose or corroded
Action(s) to take:
^ GO to [Pinpoint Test A]

DTC P0125 Insufficient coolant temperature for closed loop fuel control
Possible Source(s):
- Thermostat
- Coolant level/contamination
- Sensor out of range
- Harness open circuit
- Connector loose or corroded
Action(s) to take:
^ GO to [Pinpoint Test A]

DTC P0117 ECT circuit tow input
Possible Source(s):
- Sensor open circuit
- Harness open circuit
- Harness short
- Connector loose or corroded
Action(s) to take:
^ GO to [Pinpoint Test B]

DTC P0118 ECT circuit high input
Possible Source(s):
- Sensor short
- Harness open circuit
- Harness short
- Connector loose or corroded
Action(s) to take:
^ GO to [Pinpoint Test C]