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Home >> Acura >> 1994 >> Vigor LS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Trouble Codes >> Code 15: Ignition Output Signal
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Code 15: Ignition Output Signal

NOTE: If engine does not start, crank engine for at least 20 seconds to allow code to set in ECM memory.
  1. Turn ignition off. Remove BACK-UP fuse (10-amp) from underhood fuse/relay box for 10 seconds to reset ECM. Check ECM for fault codes. If Code 15 is not present, problem is intermittent. Check for poor connections at ECM and ignitor unit. Test drive vehicle and check again.
  2. If Code 15 is present, turn ignition off. Disconnect 4-pin connector from ignitor unit, located next to ignition coil. Turn ignition on. Measure voltage between Black/Yellow wire and body ground. If battery voltage is not present, repair open in Black/Yellow wire between ignition coil and ignition switch. If battery voltage is present, measure voltage between Black/Yellow wire and Black wire terminal at ignitor unit connector.
  3. If battery voltage does not exist, repair open in Black wire between ignitor unit and ground terminal G101, located on left side of engine. See Figure . If battery voltage exists, turn ignition off. Reconnect 4-pin connector to ignitor. Connect ECM Test Harness (07LAJ-PT3010A ) between ECM and ECM wiring harness connectors.
  4. Turn ignition on. Measure voltage between test terminal A26 (-) and test terminals A21 (+) and A22 (+). If voltage is not about 10 volts, check for open or short in Yellow/Green wire between ignitor unit and ECM terminals A21 or A22. If wire is shorted, ignitor may also be damaged. If wire is okay, replace ignitor. If about 10 volts are present, replace ECM and retest.
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