Inspection Procedure

HINT:

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

1. INSPECT FUSE (ECU-IG RH) 
   1. Remove the ECU-IG RH fuse from the main body ECU RH.
   2. Measure the resistance of the fuse.

      Standard resistance: 

      Below 1 Ω 

   NG: CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO FUSE 

   OK: GO TO Next Step 

2. CHECK AIR CONDITIONING AMPLIFIER (IG+ VOLTAGE) 
   1. Remove the A/C amplifier with its connectors still connected.
   2. Turn the power switch ON (IG).
   3. Measure the voltage of the connector.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      K52-21 (IG+) - K52-20 (GND)	Power switch ON (IG)	10 to 14 V

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

   Fig 1: Identifying Air Conditioning Amplifier Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: GO TO Next Step 

3. CHECK WIRE HARNESS (AIR CONDITIONING AMPLIFIER - BATTERY AND GROUND BODY) 
   1. Disconnect the K52 A/C amplifier connector.
   2. Measure the voltage of the wire harness side connector.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      K52-21 (IG+) - Body ground	Power switch OFF	Below 1 V
      K52-21 (IG+) - Body ground	Power switch ON (IG)	10 to 14 V

   3. Measure the resistance of the wire harness side connector.

      Standard resistance 

      STANDARD RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      K52-20 (GND) - Body ground	Below 1 Ω

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 2: Identifying K52 A/C Amplifier Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: REPLACE AIR CONDITIONING AMPLIFIER