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DCM Power Source Circuit [09/2014 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - BATTERY AND GROUND) 
    1. Disconnect the I135 DCM (Telematics Transceiver) connector.
      GTY317023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I135-4 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      I135-1 (+B) - I135-4 (E) Always 11 to 14 V
      I135-7 (IG2) - I135-4 (E) Engine switch on (IG) 11 to 14 V
      I135-8 (ACC) - I135-4 (E) Engine switch on (ACC) 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      [to DCM (Telematics Transceiver)]

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2014 - ] 
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