Inspection Procedure

HINT:

Start the engine before inspection. Check the P-IG relay 1 or battery if the smart access system with push-button start does not start.

1. INSPECT FUSE (P-IG1-1) 
   1. Remove the P-IG 1-1 fuse from the passenger side junction block.
   2. Measure the resistance of the fuse.

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      P-IG1-1 fuse	Always	Below 1 Ω

   NG: REPLACE FUSE 

   OK: Go to next step. 

2. CHECK AIR CONDITIONING AMPLIFIER (IG+ VOLTAGE) 
   1. Remove the air conditioning amplifier with its connectors still connected (see REMOVAL  ).
   2. Turn the engine switch on (IG).
   3. Measure the voltage according to the value (s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      L76-5 (IG+) - L76-1 (GND)	Engine switch on (IG)	11 to 14 V
      L76-5 (IG+) - L76-2 (FGND)	Engine switch on (IG)	11 to 14 V
      L76-5 (IG+) - L77-6 (RGND)	Engine switch on (IG)	11 to 14 V

      Fig 1: Identifying Air Conditioning Amplifier Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   NG: Go to next step. 

3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - BATTERY AND BODY GROUND) 
   1. Disconnect the L76 and L77 air conditioning amplifier connectors.
   2. Measure the voltage according to the value (s) in the table below.

      Standard Voltage 

      VOLTAGE SPECIFICATION
      
      

      Tester Connection	Switch Condition	Specified Condition
      L76-5 (IG+) - Body ground	Engine switch off	Below 1 V
      	Engine switch on (IG)	11 to 14 V

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

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

      Tester Connection	Condition	Specified Condition
      L.76-1 (GND) - Body ground	Always	Below 1 Ω
      L76-2 (FGND) - Body ground	Always	Below 1 Ω
      L77-6 (RGND) - Body ground	Always	Below 1 Ω

      Fig 2: Identifying L76 And L77 Air Conditioning Amplifier Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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