LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1994 >> Precis Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Code 13 - Intake Air Temperature Sensor Failure >> Harness Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Harness Inspection

  1. Check sensor ground circuit to ECM. Disconnect sensor harness connector. Using ohmmeter, check resistance between terminal No. 6 (Black wire) and vehicle ground. If continuity does not exist, inspect and repair circuit.
  2. Check sensor signal circuit to ECM. Turn ignition on. Using DVOM, measure voltage between harness connector terminal No. 4 (Green/Brown wire on Sonata 4-cylinder, Green/Black wire on Sonata V6, Green/Blue on Elantra and Precis, and ground. Voltage should be 4.5-4.9 volts. If voltage is not within specification, check continuity of circuit.
  3. Turn ignition off. On all models except California Elantra and Precis, go to step 4). On California Elantra and Precis models, disconnect ECM harness connector. Connect jumper wire between ECM connector terminal No. 10 (Green/Blue wire, 22-pin connector) and vehicle ground. See Figure and Figure . Using ohmmeter, check resistance between AFS harness connector terminal No. 4 (Green/Blue wire) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed. If continuity does exist, substitute ECM with known good unit and retest.
  4. On all models except California Elantra and Precis, disconnect ECM harness connector. Connect jumper wire between ECM connector terminal No. 3 (Green/Black wire, 24-pin connector) on Sonata V6 or terminal No. 5 (Green/Blue wire, 24-pin connector) on all others and vehicle ground. See Figure and Figure . Using ohmmeter, check resistance between AFS harness connector terminal No. 4 (Green/Black wire on Sonata V6, Green/Blue wire on all others) and vehicle ground. If continuity does not exist, inspect and repair circuit as needed. If continuity does exist, substitute ECM with known good unit and retest.
scientia non olet · About LEMON Manuals