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Home >> GMC >> 1989 >> Forward Control 7.4 W, Standard >> Repair and Diagnosis >> Engine Performance >> System >> CCC TBI Tests W/Codes >> Diagnostic Charts >> Code 14 - Coolant Temperature Sensor >> Test Description

Test Description

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Code 14 will set if signal voltage indicates coolant temperature above 266°F (130°C) for more than three seconds.
  2. Tests if circuit No. 410 is shorted to ground. This will cause conditions for Code 14.
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