Air Conditioning System (For Manual Air Conditioning System) Ig Power Source Circuit

Vehicle Interior. Corolla. Zre142 Aze141
Heating Air Conditioning. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)

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

AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) - IG Power Source Circuit


DESCRIPTION

The main power source is supplied to the A/C amplifier when the ignition switch is turned to ON.
The power source is used for operating the A/C amplifier and servo motor, etc.

WIRING DIAGRAM


Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Manual Air Conditioning System)  Ig Power Source Circuit


Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Manual Air Conditioning System)  Ig Power Source Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
HINT:
Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.
1.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY)


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning System (For Manual Air Conditioning System)  Ig Power Source Circuit
  1. Disconnect the connector from the A/C amplifier.

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

    Standard Voltage:
    Tester Connection
    Switch Condition
    Specified Condition
    E62-8 (IG+) - Body ground*1
    Ignition switch off
    Below 1 V
    Ignition switch ON
    11 to 14 V
    E111-14 (IG+) - Body ground*2
    Ignition switch off
    Below 1 V
    Ignition switch ON
    11 to 14 V
    1. *1: except TMC Made 2AZ-FE
    2. *2: for TMC Made and except TMC Made 2ZR-FE
    Text in Illustration
    *a
    Front view of wire harness connector
    (to A/C Amplifier (except TMC Made 2AZ-FE))
    *b
    Front view of wire harness connector
    (to A/C Amplifier (for TMC Made and except TMC Made 2ZR-FE))


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND)
  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    Condition
    Specified Condition
    E62-12 (GND) - Body ground*1
    Always
    Below 1 Ω
    E111-24 (GND) - Body ground*2
    Always
    Below 1 Ω
    1. *1: except TMC Made 2AZ-FE
    2. *2: for TMC Made and except TMC Made 2ZR-FE


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (COROLLA_ZRE142 RM000001M2W05PX.html)