NAVIGATION SYSTEM (for Radio and Display Type) Radio Receiver Power Source Circuit

DESCRIPTION

This is the power source circuit to operate the radio and display receiver assembly.

WIRING DIAGRAM

A01EMT5E01

INSPECTION PROCEDURE

Note


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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY POWER SOURCE)


    1. Disconnect the E4 and E42 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
      E4-7 (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
      E4-4 (+B1) - E4-7 (GND1) Always 11 to 14 V
      E4-3 (ACC1) - E4-7 (GND1) Ignition switch ACC 11 to 14 V
      E42-1 (IG) - E4-7 (GND1) Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here