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No. 18 Cooling System Concerns-Runs Cold: Notes

18

COOLING SYSTEM CONCERNS-RUNS COLD

DESCRIPTION

Engine does not reach normal operating temperature.

POSSIBLE CAUSE

Improper indication of low engine coolant temperature indicator light and/or high engine coolant temperature warning light
- ECT sensor No. 1 malfunction
  - Instrument cluster malfunction

Cooling fan system malfunction
Condenser fan system malfunction
Thermostat malfunction (stuck at fully open)
Foreign material penetration in engine coolant

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.