NAVIGATION SYSTEM (for HDD) Reverse Signal Circuit

DESCRIPTION

The navigation receiver assembly receives a reverse signal from the power management control ECU via the integration relay to use for adjusting the vehicle position on the navigation display.

WIRING DIAGRAM

A01J8T3E01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. A01J9H1E32
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Navigation Receiver Assembly)

      Disconnect the L42 navigation receiver assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L42-5 (REV) - Body ground

      Power switch on (IG)

      Shift lever in R

      		 11 to 14 V
      L42-5 (REV) - Body ground

      Power switch on (IG)

      Shift lever in any position except R

      		 Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - INTEGRATION RELAY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - INTEGRATION RELAY)


    1. A01J9H1E32

      Disconnect the L42 navigation receiver assembly connector.

    2. A01J9S4E01

      Disconnect the 1G integration relay connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L42-5 (REV) - 1G-4 (NAV) Always Below 1 Ω
      L42-5 (REV) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Navigation Receiver Assembly)
      *2

      Front view of wire harness connector

      (to Integration Relay)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT INTEGRATION NO.1 RELAY


    1. A01J9S4E02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Integration Relay)

      Disconnect the 1G integration relay connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      1G-13 (BKUP) - Body ground

      Power switch on (IG)

      Shift lever in R

      		 11 to 14 V
      1G-13 (BKUP) - Body ground

      Power switch on (IG)

      Shift lever in any position except R

      		 Below 1 V

    NG

    CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - POWER MANAGEMENT CONTROL ECU) Click here

    OK

    REPLACE INTEGRATION NO.1 RELAY Click here

  4. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - POWER MANAGEMENT CONTROL ECU)


    1. A01J9S4E02

      Disconnect the 1G integration relay connector.

    2. A01JCJ5E01

      Disconnect the A21 power management control ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1G-13 (BKUP) - A21-15 (BL) Always Below 1 Ω
      1G-13 (BKUP) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Integration Relay)
      *2

      Front view of wire harness connector

      (to Power Management Control ECU)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE POWER MANAGEMENT CONTROL ECU Click here