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Home >> Isuzu >> 1989 >> I-Mark LS >> Repair and Diagnosis >> Engine Performance >> System >> Tests W/Codes - EFI >> Diagnostic Circuit Check >> Code 14 - Coolant Temperature Sensor (Cts) High Temperature Indicated >> Notes

Code 14 - Coolant Temperature Sensor (Cts) High Temperature Indicated: Notes

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Checks to see if code was set as result of hard failure or intermittent condition. Code 14 will set if the signal voltage indicates a coolant temperature greater than 293°F (145°C) for 2 minutes.
  2. This test simulates conditions for a Code 15. If ECM recognizes open circuit (high voltage) and displays a low temperature, ECM and wiring are okay.
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