Inspection Procedure

1. READ VALUE OF TECHSTREAM 
   1. Connect Techstream to the DLC3.
   2. Turn the power switch on (IG) and turn Techstream main switch on.
   3. Read the Data List according to the displays on the tester.

      HINT:

      When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

      Main Body: 

      DATA LIST AND MAIN BODY
      
      

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      ACC Relay Monitor	Status of ACC Relay Monitor / ON or OFF	ON: Power switch on (IG) (ACC) OFF: Power switch off	-

      OK: 

      "ON" (Power switch on (ACC)) appears on the screen. 

      NG:  Go to step  3

      OK: Go to Next Step 

2. CHECK POWER SWITCH CONDITION 
   1. Check the power source mode change.
      1. When the key is inside the vehicle and the shift lever is in the P position, check that pressing the power switch causes the power source mode to change as follows:

         OK: 

         off → on (ACC) → on (IG) → off 

         HINT:

         • If power mode does not change to ON (IG and ACC) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (IG AND ACC) ).
         • If power mode does not change to ON (IG) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (IG) ).
         • If power mode does not change to ON (ACC) (See POWER SOURCE MODE DOES NOT CHANGE TO ON (ACC) ).

           NG: Go to OTHER PROBLEM 

           OK: Go to Next Step 

3. INSPECT RELAY (ACC RELAY) 
   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 

   RESISTANCE SPECIFICATION
   
   

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

   Fig 1: View Of Relay (ACC Relay)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE RELAY 

   OK: Go to Next Step 

4. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B - MAIN BODY ECU) 
   1. Disconnect the E7 ECU connector.
      Fig 2: Identifying Wire Harness (Instrument Panel J/B - Main Body ECU)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Disconnect the II J/B connector.
   3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No. (Symbol)	Condition	Specified Condition
   II-3 - E7-22 (ACCD)	Always	Below 1 Ω
   E7-22 (ACCD) or II-3 -Body ground	Always	10 kΩ or higher

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to Next Step 

5. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B - BATTERY AND BODY GROUND) 
   1. Disconnect the IF and IA J/B connectors.
   2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFICATION
      
      

      Terminal No.	Condition	Specified Condition
      IF-10- Body ground	Always	Below 1 Ω

   3. Measure the voltage according to the value (s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Terminal No.	Condition	Specified Condition
   IA-1 - Body ground	Always	10 to 14 V

   Fig 3: Identifying Wire Harness (Instrument Panel J/B - Battery And Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to Next Step 

6. INSPECT INSTRUMENT PANEL J/B 

1. Measure the resistance according to the value (s) in the table below.

Fig 4: View Of Instrument Panel J/B

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance 

NG: REPLACE INSTRUMENT PANEL J/B 

OK: REPLACE MAIN BODY ECU