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Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR CONTROL RECEIVER) 
    1. Disconnect the P33 certification ECU connector and P31 door control receiver connector.
    2. Measure the voltage resistance according to the value (s) in the table below.

      Standard 

      RESISTANCE SPECIFICATION

      Symbol (Tester Connection) Condition Specified Condition
      RC0 (P33-29) - +5 (P31-2) Always Below 1 Ω
      +B1 (P33-1) - Body ground Always 10 to 14 V
      RC0 (P33-29) - Body ground Always 10 kΩ or higher
      E (P33-17) - Body ground Always Below 1 Ω
      Fig 1: Identifying P33 Certification ECU And P31 Door Control Receiver Connectors
      G05827998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: Go to Next Step 

  2. INSPECT CERTIFICATION ECU 
    1. Reconnect the P33 connector.
    2. Measure the voltage according to value (s) in the table below.

      Standard voltage 

      STANDARD VOLTAGE SPECIFICATION

      Symbol (Tester Connection) Condition Specified Condition
      RC0 (P33-29) - E (P33-17) Engine switch OFF, all doors closed and transmitter switch not pressed Below 1 V
      Engine switch OFF, all doors closed and transmitter switch pressed 4.6 to 5.4 V
      +B1 (P33-1) - E (P33-17) Always 10 to 14 V
      Fig 2: Identifying P33 Certification ECU Connector
      G05827999Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      NG: REPLACE CERTIFICATION ECU 

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

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