Toyota CH-R Service Manual: Back-up Power Source Circuit

DESCRIPTION

The back-up power source circuit for the air conditioning amplifier assembly is shown below. Power is supplied even when the ignition switch is off. This power is used for diagnostic trouble code memory, etc.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - POWER SOURCE)

(a) Disconnect the air conditioning amplifier assembly connector.

*a

Front view of wire harness connector

(to Air Conditioning Amplifier Assembly)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

F72-1 (B) - Body ground

Always

11 to 14 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND)

(a) Disconnect the F72 air conditioning amplifier assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F72-29 (GND) - Body ground

Always

Below 1 Ω

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Ambient Temperature Display System
    DESCRIPTION The outside temperature sensor is installed in front of the cooler condenser assembly to detect the ambient temperature which is used to control the air conditioning system AUTO mode. ...

    IG Power Source Circuit
    DESCRIPTION Power source voltage is supplied to the air conditioning amplifier assembly when the ignition switch is turned ON. This power is used for operating the air conditioning amplifier asse ...

    Other materials:

    Toyota CH-R Service Manual > Pre-collision System: Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each sy ...

    Toyota CH-R Service Manual > Oil Pressure Sensor: Components
    COMPONENTS ILLUSTRATION *1 NO. 1 ENGINE UNDER COVER *2 REAR ENGINE UNDER COVER LH N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 OIL PRESSURE SENSOR ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2024 Copyright www.tochr.net
    0.0131