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Remote Keyless Entry 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 in BODY CONTROL MODULES - CORVETTE article.
  2. Turn ignition on. Attempt to establish communication with Dash Integration Module (DIM), Driver Door Module (DDM) and Remote Control Door Lock Receiver (RCDLR) module. If scan tool communicates with these modules, go to next step. If scan tool does not communicate with these modules, go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article.
  3. Display DIM, DDM and RCDLR DTCs on scan tool. If scan tool displays any DTCs, go to next step. If scan tool does not display and DTCs, diagnose remote keyless entry system by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
  4. If scan tool displays any DTCs which begin with a "U", go to TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - CORVETTE article. If scan tool does not display any DTCs that begin with "U", go to next step.
  5. If scan tool displays DTC B0605 or B1000, go to DTC B0605: BCM INTERNAL MEMORY MALFUNCTION or DTC B1000: ECU MALFUNCTION under DIAGNOSTIC TESTS in BODY CONTROL MODULES - CORVETTE article. If scan tool does not display DTCs B0605 or B1000, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS  .
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