Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch on (IG) and turn the intelligent tester main switch on.
3. Select the items below in the DATA LIST, and read the displays on the intelligent tester.
   BODY ECU CONDITIONS CHART
   
   

   Item	Measurement Item / Display (Range)	Normal Condition	Diagnostic Note
   ACC SW	ACC SW signal / ON or OFF	ON: Ignition switch on (IG) or (ACC) OFF: Ignition switch off	-
   IG SW	IG SW signal / ON or OFF	ON: Ignition switch on (IG) OFF: Ignition switch off or Ignition switch on (ACC)	-

NG: Go to step 2 

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

1. Inspect ACC relay continuity.
   Fig 1: Identifying Relay Test terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Remove the ACC relay from the instrument panel J/B.
   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 IG1 relay continuity.
   1. Remove the IG1 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)

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
   II-4 - Body ground	Always	10 to 14 V

NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK: Go to Next Step 

1. Disconnect the connector 1F from the instrument panel junction block assembly.
2. Measure the resistance 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 RESISTANCE CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   IF-10 - Body ground	Always	Below 1

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Inspect the harness and connectors related to ignition switch, referring to the wiring diagram.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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