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Home >> Pontiac >> 1990 >> Firebird Formula, 5.0 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - V8 PFI >> Code 14: Coolant Temp Sensor Signal Volt Low >> Notes

Code 14: Coolant Temp Sensor Signal Volt Low: Notes

Coolant temperature is one input the ECM uses to control fuel delivery, spark timing, idle speed, converter clutch, canister purge, air management (man. trans.), EGR and cooling fan.

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Code 14 will set if signal voltage indicates high coolant temperature for 3-20 seconds.
  2. This test determines if circuit No. 410 is shorted to ground which will cause the conditions for Code 14.
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