Inspection Procedure

HINT:

Start the engine before inspection. Check the IG1 relay or battery if the engine does not start.

1. INSPECT FUSE (HTR) 
   1. Remove the HTR fuse from the instrument panel J/B.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      Fig 1: Identifying HTR Fuse

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESISTANCE SPECIFICATIONS
      
      

      Tester item	Condition	Specified condition
      HTR fuse	Always	Below 1 Ω

   NG: REPLACE FUSE (HTR) 

   OK: Go to Next Step 

2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY) 
   1. Disconnect the connector from A/C amplifier.
   2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      Fig 2: Air Conditioning Amplifier Connector Wire Harness View

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      VOLTAGE SPECIFICATIONS
      
      

      Tester connection (Symbols)	Condition	Specified condition
      D37-21 (IG+) - Body ground	Ignition switch off	Below 1.0 V
      D37-21 (IG+) - Body ground	Ignition switch on (IG)	10 to 14 V

   Result 

   RESULT DESCRIPTION
   
   

   Result	Proceed to
   OK	A
   NG (w/o Smart Key system)	B
   NG (w/ Smart Key system)	C

   B: GO TO STARTING SYSTEM STARTING SYSTEM 

   C: GO TO PUSH BUTTON START SYSTEM SYSTEM DESCRIPTION 

   A: Go to Next Step 

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

      Resistance 

      Fig 3: Air Conditioning Amplifier Connector Wire Harness View

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESISTANCE SPECIFICATIONS
      
      

      Tester connection (Symbols)	Condition	Specified condition
      D37-20 (GND) - Body ground	Always	Below 1 Ω

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE