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Home >> Geo >> 1991 >> Prizm Base, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes >> PRIZM EXCEPT GSi CODE CHARTS (VIN 6) >> Code 14, IGN Signal CKT, Open Or Short CKT

Code 14, IGN Signal CKT, Open Or Short CKT

ECM receives a 12-volt signal from the ignitor on ECM terminal IGF. If this signal is not present 4 times during cranking, Code 14 will set. ECM uses this signal to pulse the fuel injector.

NOTE: Test numbers refer to test numbers on diagnostic chart.
  1. Verifies B+ signal from ECM.
  2. Checks for a short to ground in Black wire.