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Home 5 Body 5 Immobilizer 5 5. No Start | Steering Lock Issue | Nissan Altima

No Start| Steering Lock Issue | Nissan Altima

🚗 2009 Nissan Altima with Intelligent Key

  • Ignition won’t turn on and the car won’t start

 

🩺 Diagnosis

  • Tested the operation of the key by locking all the doors from the key and pressing the keyless entry button on the outside door handle.
    • Doors got unlocked, meaning that the key is operational and the car recognizes it.
  • Next, I read codes from the BCM and IPDM computers, both having S/L (Steering Lock) Relay and switch codes.
  • Live data for S/L state was ‘unknown’, but should be ‘locked’ or ‘unlocked’.
    • If I ground one of the two sensors (S/L Condition 1 or 2), S/L state will display ‘locked’ or ‘unlocked’ and the ignition will turn on.
  • If the S/L state is not ‘unknown’, but ‘locked’ or ‘unlocked’, the culprit could be IPDM or the Electronic Steering Lock.
  • In this case it had a bad Electronic Steering Lock.
  • After replacement, if I remember correctly, car started without a need to match the donor steering lock to the car.

Steering Lock Diagram. 2009 Nissan Altima

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