LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2013 >> Matrix Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Diagnostic Codes & Circuit Tests) >> Air Conditioning System >> Circuit Tests >> Back-up Power Source Circuit >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Back-up Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BODY GROUND) 
    1. Disconnect the A/C amplifier connector.
      Fig 1: Checking Harness And E9 Connector (Air Conditioning Amplifier - Body Ground)
      GTY290314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      E9-1 (B) - Body ground Always 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to A/C Amplifier)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   2 

  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
scientia non olet · About LEMON Manuals