COMBUSTION TYPE POWER HEATER SYSTEM ECU Power Source Circuit

DESCRIPTION

This is the power source for the power heater ECU (combustion heater assembly).

WIRING DIAGRAM

A0118J4E02

INSPECTION PROCEDURE

Note

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

Tech Tips

Before performing the following procedure, check the battery and generator and confirm that they are operating normally.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (POWER HEATER ECU (COMBUSTION HEATER ASSEMBLY) - BODY GROUND)


    1. A01194QE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Heater ECU (Combustion Heater Assembly))

      Disconnect the A45 power heater ECU (combustion heater assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A45-5 (B) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A45-1 (E) - Body ground Always Below 1 Ω

    4. Reconnect the power heater ECU (combustion heater assembly) connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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