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Home >> Eagle >> 1993 >> Vision ESi >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (A/C-Heater System - Automatic) >> Testing >> A/C-Heater System Test Procedure >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
  1. To properly diagnose and test A/C-heater system, always start diagnosis at IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS test. Starting with any other test may result in incorrect diagnosis. Ensure battery is fully charged and charging system is functional.
  2. Do not backprobe connectors unless specified. Probe connector cavities carefully. Do not spread terminals. This could cause an intermittent problem. Do not cause short circuits when performing electrical tests. Doing so will set additional fault codes, making diagnosis of original problem more difficult.
  3. Use DRB voltmeter, unless instructed to use an external voltmeter. Do not use a test light in place of a voltmeter. Use DRB ohmmeter, unless instructed to use an external ohmmeter. Always perform VERIFICATION TEST after repairs are made. Always disconnect DRB after use.
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