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Home >> Lexus >> 2017 >> CT 200h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Access System (Keyless Start) (Diagnostic Codes & Symptom Tests) >> SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) >> Symptom Tests >> Power Source Mode does not Change to ON (IG) [08/2014 - ] >> Procedure

Power Source Mode does not Change to ON (IG) [08/2014 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - POWER MANAGEMENT CONTROL ECU) 

    See step  1

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND) 

    See step  2

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  3

  3. INSPECT NO. 2 INTEGRATION RELAY (IG2 RELAY) 

    See step  3

    Result:  NG

    NG 

    REPLACE NO. 2 INTEGRATION RELAY 

    (See article. Refer to REMOVAL [08/2014 - ] )

    Result:  OK

    OK 

    See step  4

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (IG1 NO. 1, IG1 NO. 2 AND IG1 NO. 3 RELAY) 

    See step  4

    Result:  NG

    NG 

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

    (See article. Refer to REMOVAL [08/2014 - ] )

    Result:  OK

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - INSTRUMENT PANEL J/B) 

    See step  5

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) 

    See step  6

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - IG2 RELAY) 

    See step  7

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (ENGINE ROOM RELAY BLOCK ASSEMBLY - BODY GROUND) 

    See step  8

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  9

  9. CHECK POWER MANAGEMENT CONTROL ECU 

    See step  9

    Result:  OK

    OK 

    USE SIMULATION METHOD TO CHECK 

    (See article. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2014 - ] )

    Result:  NG

    NG 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (See article. Refer to REMOVAL [08/2014 - ] )