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DYNAMIC RADAR CRUISE CONTROL SYSTEM ECU Power Source Circuit

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DTC Code DTC Name
  ECU Power Source Circuit
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DESCRIPTION

This circuit provides power to operate the driving support ECU assembly.

Table 1. *1 IG1 NO. 3 Relay *2 ECU-IG1 NO. 2 *3 Driving Support ECU Assembly
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

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PROCEDURE


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    CHECK TERMINAL VOLTAGE (POWER SOURCE OF DRIVING SUPPORT ECU ASSEMBLY)


    1. A01VN7VC14
      *a

      Front view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the Q1 driving support ECU assembly connector.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Q1-30 (B) - Body ground Engine switch on (IG) 11 to 14 V
      Q1-30 (B) - Body ground Engine switch off Below 1 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      Q1-25 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BATTERY AND BODY GROUND)