Inspection Procedure

1. Connect the intelligent tester (with CAN VIM) to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the intelligent tester main switch on.
4. Select the item below in the ACTIVE TEST and then check that the indicator operates.

MAIN BODY (Main body ECU RH): 

OK: 

The security indicator light turns on or off correctly when operating it through the intelligent tester. 

NG: Go to step   2 

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

1. with navigation system: Check the security indicator.
   1. Remove the multi-display.
   2. Apply battery voltage to the terminals of the multidisplay and check the lighting condition of the security indicator.
   Fig 1: Inspecting Security Indicator

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard 

   SECURITY INDICATOR SPECIFIED CONDITION
   
   

   Measurement Condition	Specified Condition
   Battery positive (+) --> Terminal J50- 19 (SEUC) Battery negative (-) --> Terminal J50- 10 (GND1)	Lights up

   NOTE:

   • If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator will not light up.
   • Voltage of more than 12 V will damage the security indicator.
   • If the voltage is too low, the security indicator will not light up.
2. without navigation system: Check the security indicator.
   1. Remove the center cluster integration switch.
   2. Apply battery voltage to the terminals of the center cluster integration switch and check the lighting condition of the security indicator.
      Fig 2: Removing Center Cluster Integration Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard 

      CENTER CLUSTER INTEGRATION SWITCH SPECIFIED CONDITION
      
      

      Measurement Condition	Specified Condition
      Battery positive (+) --> Terminal J54-9 (SEUC) Battery negative (-) --> Terminal J54-8 (E)	Lights up

      NOTE:

      • If the positive (+) lead and the negative (-) lead are incorrectly connected, the security indicator will not light up.
      • Voltage of more than 12 V will damage the security indicator.
      • If the voltage is too low, the security indicator will not light up.

Result 

A: REPLACE MULTI-DISPLAY ASSEMBLY 

B: REPLACE INTEGRATION CONTROL AND PANEL 

C: Go To Next Step 

1. with navigation system: Check the wire harness between the ECU and multi-display.
   1. Disconnect the J74 ECU connector and J50 multidisplay connector.
   2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION TABLE  .
   Fig 3: Disconnecting J74 ECU Connector & J50 Multidisplay Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION TABLE
   
   

   Symbol (Tester Connection)	Specified Condition
   IND (J74-24) - SEUC (J50-19)	Below 1 ohms
   IND (J74-24) - Body ground	10 k ohms or higher

2. without navigation system: Check the wire harness between the ECU and integration switch.
   1. Disconnect the J74 ECU connector and J54 panel connector.
   2. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION TABLE  .

Standard resistance 

Fig 4: Disconnecting J74 ECU Connector & J54 Panel Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go To Next Step 

1. with navigation system: Check the wire harness between the multi-display and the body ground.
   1. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION TABLE  .
   Fig 5: Checking Wire Harness Between Multi-Display & Body Ground

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION TABLE
   
   

   Symbol (Tester Connection)	Specified Condition
   GND1 (J50-10) - Body ground	Below 1 ohms

2. without navigation system: Check the wire harness between the integration switch and the body ground.
   1. Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION TABLE  .

Standard resistance 

Fig 6: Checking Wire Harness Between Integration Switch & Body Ground

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)