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Home >> Lexus >> 2010 >> RX 350 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Smart Access System With Push-Button Start (For Start Function) (Diagnostic Codes & Symptom Tests)) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Symptom Tests >> Power Source Mode does not Change to ON (ACC) >> Procedure
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Power Source Mode does not Change to ON (ACC): Procedure

WARNING: This page is about a different car, the 2011 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) See step   1 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU) 

    OK: Go to next step 

  2. CHECK HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) See step   2 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) 

    OK: Go to next step 

  3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY See step   3 

    NG → See step   7 

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR See step   4 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) See step   5 

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 

    OK: Go to next step 

  6. INSPECT POWER MANAGEMENT CONTROL ECU See step   6 

    NG → See step   8 

    OK → See step   9 

  7. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL - Step 2 
  8. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to  REMOVAL 
  9. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
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