Inspection Procedure

HINT:

Start the inspection from step 1 when using the Techstream and start from step  2 when not using the Techstream.

1. READ VALUE ON TECHSTREAM (UNLOCK WARNING SWITCH) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch on (IG) and turn the Techstream main switch on.
   3. Select the items below in the "DATA LIST" and read the display on the Techstream.

      BODY: 

      DATA LIST
      
      

      Item	Measurement Item/Display (Range)	Normal Condition
      KEY UNLK WRN SW	Unlock warning switch/ON or OFF	ON: Ignition key inserted OFF: Ignition key is not inserted

      OK: 

      When the ignition switch is operated, the display changes as shown above. 

   NG: Go to step 2 

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

2. INSPECT MULTIPLEX NETWORK BODY ECU (KSW TERMINAL) 
   1. Turn the ignition switch off.
   2. Disconnect the multiplex network body ECU (D7) connector.
   3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      D7-21 (KSW) - Body ground	Ignition key is inserted	Below 1 Ω
      D7-21 (KSW) - Body ground	Ignition key is not inserted	10 kΩ or higher

   NG: Go to step 3 

   Fig 1: Disconnecting Multiplex Network Body ECU (D7) Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

3. INSPECT UNLOCK WARNING SWITCH 
   1. Disconnect the unlock warning switch connector.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      D31-1 - D31-2	Switch pushed (Ignition key is inserted)	Below 1 Ω
      D31-1 -D31-2	Switch released (Ignition key is not inserted)	10 kΩ or higher

   NG: REPLACE UNLOCK WARNING SWITCH 

   Fig 2: Inspecting Unlock Warning Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK : REPAIR OR REPLACE HARNESS OR CONNECTOR (BETWEEN BODY ECU, BODY GROUND - UNLOCK WARNING SWITCH)