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Home >> Mitsubishi >> 1994 >> Precis Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Code 44 - Ignition Coil/Power Transistor Failure >> Harness Inspection
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Harness Inspection

  1. Disconnect ignition coil harness connector. Turn ignition on. Using DVOM, measure voltage between ignition coil harness connector terminal No. 3 (Black/White wire) and vehicle ground. If battery voltage does not exist, inspect and repair circuit as needed.
  2. Disconnect power transistor connector. Using ohmmeter, check resistance between ignition coil harness connector terminal No. 1 (Green/White wire on Elantra, White/Black wire on Sonata 4-Cylinder) and power transistor harness connector terminal No. 6. If continuity does not exist, inspect and repair circuit as needed.
  3. Using ohmmeter, check resistance between ignition coil harness connector terminal No. 2 (Green/Blue wire on Elantra, White/Red wire on Sonata 4-Cylinder) and power transistor connector terminal No. 1. If continuity does not exist, inspect and repair circuit as needed.
  4. Using ohmmeter, check resistance between power transistor harness connector terminal No. 3 (Black wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed.
  5. Turn ignition switch to START position. Using DVOM, measure voltage between power transistor harness connector terminal No. 5 (Brown wire on Elantra, Yellow/Black wire on Sonata 4-Cylinder) and vehicle ground. Voltage should be 0.5-4.0 volts. If voltage is within specification, circuit is okay.
  6. If voltage is not within specification, turn ignition off. Disconnect ECM harness connector. Using ohmmeter, check resistance between power transistor harness connector terminal No. 5 (Brown wire on Elantra, Yellow/Black wire on Sonata 4-Cylinder) and ECM harness connector terminal No. 5 (18-pin connector) or No. 17 (26-pin connector). See Figure . If continuity does not exist, inspect and repair circuit as needed. If continuity exists, substitute ECM with known good unit and retest.
  7. Connect ECM harness connector. Turn ignition switch to START position. Using DVOM, measure voltage between power transistor harness connector terminal No. 2 (White/Black wire on Elantra, Yellow/Blue wire on Sonata 4-Cylinder) and vehicle ground. Voltage should be 0.5-4.0 volts. If voltage is within specification, circuit is okay.
  8. If voltage is not within specification, turn ignition off. Disconnect ECM harness connector. Using ohmmeter, check resistance between power transistor harness connector terminal No. 2 (White/Black wire on Elantra, Yellow/Blue wire on Sonata 4-Cylinder) and ECM harness connector terminal No. 6 (18-pin connector) or No. 5 (26-pin connector). See Figure . If continuity does not exist, inspect and repair circuit as needed. If continuity exists, substitute ECM with known good unit and retest.
  9. Connect ECM harness connector. Turn ignition on. Using DVOM, measure voltage between timing adjustment terminal (Light Green/Red) and vehicle ground. Voltage should be 4.0-5.2 volts. If voltage is within specification, circuit is okay. If voltage is not within specification, turn ignition off.
  10. Disconnect ECM harness connector. Using ohmmeter, check resistance between ECM harness connector terminal No. 1 (24-pin connector) or No. 5 (16-pin connector) and timing adjustment terminal. See Figure . If continuity does not exist, inspect and repair circuit as needed. If continuity does exist, substitute ECM with known good unit and retest.
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