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Transponder CRC Failure, Transponder Communication Failure, Transponder ID Mismatch, Or Transponder Response Mismatch

  1. Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). See Figure . Turn ignition switch to ON position. Using scan tool, read and record DTCs. Erase DTCs. Turn ignition switch to OFF position and wait 10 seconds. Turn ignition switch to ON position. Recheck for DTCs. If DTC resets, go to next step. If DTC does not reset, go to step  6 .
  2. Verify if multiple sentry keys are available. If multiple sentry keys are available, go to next step. If multiple sentry keys are not available, go to step  4 .
    3. NOTE: Perform following test using one sentry key. When completed, repeat step using remainder of sentry keys, one at a time.
  3. Using scan tool, erase DTCs. Turn ignition switch to OFF position and wait 10 seconds. Turn ignition switch to ON position. Using scan tool, read and record DTCs. If DTC resets for all sentry keys, replace Sentry Key Immobilizer Module (SKIM). See SENTRY KEY IMMOBILIZER MODULE  under REMOVAL & INSTALLATION. Perform SKIS VERIFICATION TEST  under VERIFICATION TESTS. If DTC does not reset for any sentry key, test is complete.
  4. Using scan tool, program sentry keys into SKIM. See PROGRAMMING BLANK SENTRY KEYS USING SCAN TOOL  under PROGRAMMING. Using scan tool, erase SKIM DTCs. Turn ignition switch to OFF position and wait 10 seconds. Turn ignition switch to ON position. Using scan tool, read and record DTCs. If DTC resets, go to next step. If DTC does not reset, test is complete.
  5. Replace ignition key and program into SKIM. See PROGRAMMING BLANK SENTRY KEYS USING SCAN TOOL  under PROGRAMMING. Using scan tool, erase DTCs. Turn ignition switch to OFF position and wait 10 seconds. Turn ignition switch to ON position. Using scan tool, read and record DTCs. If DTC resets, go to next step. If DTC does not reset, test is complete.
  6. Turn ignition switch to OFF position. Visually inspect connectors at Powertrain Control Module (PCM) and SKIM for damaged terminals or chaffed wires. See COMPONENT LOCATIONS  . Check wiring harness for damage. Check for related Technical Service Bulletins (TSB). If no fault is found, replace SKIM. See SENTRY KEY IMMOBILIZER MODULE  under REMOVAL & INSTALLATION. Perform SKIS VERIFICATION TEST  under VERIFICATION TESTS. If fault is found, repair as necessary. Perform POWERTRAIN VERIFICATION TEST VER-1  under VERIFICATION TESTS.
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