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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B302A >> Circuit/System Verification
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Circuit/System Verification

  1. Verify the OnStar system is operating properly. Refer to OnStar Symptom Diagnosis .
  2. With a master vehicle key, turn the ignition ON.
  3. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
  4. Turn the ignition OFF and wait 5 seconds.
  5. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
  6. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
  7. With a scan tool, clear any DTCs.
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