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Electronic Suspension Control System Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC) located under steering column. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST A: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition on, engine off. Attempt to establish communication with Electronic Suspension Control (ESC) system. If scan tool communicates with RTD system, go to next step. If scan tool does not communicate with RTD system, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Select RTD display DTCs function on scan tool. If scan tool displays and DTCs, go to next step. If scan tool does not display any DTCs, repair RTD system by symptom.
  4. If scan tool displays any DTCs that begin with "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS. If scan tool does not display any DTCs that begin with "U", diagnose RTD system by symptom.
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