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Home >> Mitsubishi >> 1998 >> Montero >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Scan Tool Will Not Communicate
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Scan Tool Will Not Communicate

NOTE: For terminal identification, see TERMINAL IDENTIFICATION . For circuit and wire color identification, see WIRING DIAGRAMS article.
  1. Using DVOM, check voltage between Data Link Connector (DLC) terminal No. 16 and ground. If battery voltage does not exist, check and repair junction connectors and wiring harness between DLC and power supply.
  2. If battery voltage exists, check for continuity between DLC terminal No. 4 and ground, and between DLC terminal No. 5 and ground. If continuity does not exist, check and repair wiring harness between DLC and ground. If continuity exists, go to next step.
  3. Try a different scan tool adapter cable. If scan tool does not communicate, try scan tool on a known-good vehicle. If scan tool still does not communicate, replace scan tool.
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