COMBUSTION TYPE POWER HEATER SYSTEM > ECU Power Source Circuit

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DESCRIPTION

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

WIRING DIAGRAM


E176183E02


INSPECTION PROCEDURE

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

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

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


    E176184E01

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

  1. 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

  1. 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

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

Text in Illustration 
*1
Front view of wire harness connector
(to Power Heater ECU (Combustion Heater Assembly))


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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