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Home >> Mitsubishi >> 2003 >> Montero XLS >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Engine Controls - Self-Diagnostics) >> Testing Procedure >> Scan Tool Will Not Communicate >> No Communication With All Systems

No Communication With All Systems

WARNING: This page is about a different car, the 2003 Mitsubishi Montero Sport. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Measure voltage between ground and OBD-II Data Link Connector (OBD-II DLC) terminal No. 16 (Red/Black wire). See Figure. If battery voltage exists, go to next step. If battery voltage does not exist, repair connectors and/or wiring between OBD-II DLC and power supply.
  2. Check for continuity between ground and OBD-II DLC terminals No. 4 (Black wire) and No. 5 (Black wire). If continuity exists at each terminal, repair or replace scan tool as necessary. If continuity does not exist at either terminal, repair wiring between ground and OBD-II DLC.
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