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Radio Receiver Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE) 
    1. Disconnect the E1 and E5 radio and display receiver assembly connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E1-7 (GND1) - 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
      E1-4 (+B1) - E1-7 (GND1) Always 11 to 14 V
      E1-3 (ACC1) - E1-7 (GND1) Engine switch on (ACC) 11 to 14 V
      E5-1 (IG) - E1-7 (GND1) Engine switch on (IG) 11 to 14 V

    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 
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