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Problem Symptoms Table

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
POWER BACK DOOR SYSTEM - PROBLEM SYMPTOMS TABLE

Symptom Suspected Area Refer To
Power back door does not operate
  1. ECU-B fuse
  2. ECU-IG NO. 1 fuse
  3. AM1 Fuse
  4. Power back door off switch
  5. Power back door opener/closer switch
  6. Power back door closer switch
  7. Power back door touch sensor LH
  8. Power back door touch sensor RH
  9. Power backdoor drive unit
  10. Back door lock assy
  11. Power back door ECU
  12. Instrument panel J/B assy (multiplex network body ECU)
  13. Wire harness
 POWER BACK DOOR DOES NOT OPERATE 
Jam protection function is activated while power back door is operating (for various reasons(1))
  1. Fitting condition of back door
  2. Power back door touch sensor LH
  3. Power back door touch sensor RH
  4. Power back door ECU
  5. Wire harness
 JAM PROTECTION FUNCTION IS ACTIVATED WHILE POWER BACK DOOR IS OPERATING (FOR VARIOUS REASONS*) 
Power back door warning buzzer does not sound
  1. Power back door warning buzzer
  2. Power back door ECU
  3. Wire harness
 POWER BACK DOOR WARNING BUZZER DOES NOT SOUND 
(1) It may be caused by ill-fitting back door, faulty touch sensor or faulty pulse sensor
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