Inspection Procedure

1. Connect the intelligent tester to DLC3.
2. Turn the ignition switch on (IG) and turn the intelligent tester main switch on.
3. Select the item below in the ACTIVE TEST and then check that the relay operates.
   BODY ECU TEST DETAILS
   
   

   Item	Test Details	Diagnostic Note
   F FOG LIGHT RLY	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.
      Fig 1: Identifying Relay Test Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE CONDITION CHART
      
      

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

2. Inspect TAIL relay continuity.
   1. Remove the tail relay from the instrument panel J/B.
      Fig 2: Identifying Relay Test Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.
      STANDARD RESISTANCE CONDITION CHART
      
      

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

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 CONDITION CHART
   
   

   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 CONDITION CHART
   
   

   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 CONDITION CHART
   
   

   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 CONDITION CHART
   
   

   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 CONDITION CHART
   
   

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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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