Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Body / Active Test.
5. Check the operation.

   Body (Body ECU) 

   ACTIVE TEST DETAIL - BODY (BODY ECU)
   
   

   Tester Display	Test Part	Control Range
   Front Fog Light Relay	Front fog light relay	ON/OFF

   OK: 

   Front fog lights come on. 

NG: Go to step 2 

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

1. Inspect front fog relay continuity.
   1. Remove the front fog relay from the instrument panel J/B.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      3 - 5	10 kΩ or higher
      3 - 5	Below 1 Ω (When battery voltage is applied to terminal 1 - 2)

      Fig 1: Identifying Front Fog Relay Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect TAIL relay continuity.
   1. Remove the tail relay from the instrument panel J/B.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Specified Condition
      3 - 5	10 kΩ or higher
      3 - 5	Below 1 Ω (When battery voltage is applied to terminal 1 - 2)
      3-4	Below 1 Ω (When battery voltage is applied to terminal 1 - 2)

      Fig 2: Identifying TAIL Relay Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 3: Identifying Instrument Panel Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   IA-1 - Body ground	Always	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 4: Identifying Instrument Panel Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   IC-1 - Body ground	Light control switch TAIL and Front fog light switch OFF → ON	Below 1 V → 10 to 14 V
   ID-5 - Body ground	Light control switch TAIL and Front fog light switch OFF → ON	Below 1 V → 10 to 14 V

NG: Go to step 5 

OK : REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Measure the voltage according to the value(s) in the table below.
   Fig 5: Identifying Instrument Panel Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   IL-3 - Body ground	Light control switch OFF → TAIL	Below 1 V → 10 to 14 V

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

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 6: Identifying Instrument Panel Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   IL-4 - Body ground	Light control switch OFF → TAIL	Below 1 V → 10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the D9 connector of the multiplex network body ECU and the II connector of the instrument panel junction block assembly.
2. Measure the resistance according to the value(s) in the table below.
   Fig 7: Identifying Instrument Panel Junction Block Assembly Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   D9-7 - II-8	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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