Inspection Procedure

1. Check if the illumination for the multi-display, radio receiver, navigation controller or others (transmission control SW, hazard warning switch, cigarette lighter, etc.) comes on when the light control switch is turned to the HEAD or TAIL position.
   RESULT CHART
   
   

   Condition	Proceed to
   Illumination comes on for components except multi-display	A
   Illumination comes on for components except navigation controller	B
   No illumination comes on (multi-display, radio receiver, navigation controller, etc.)	C

B: Go to step  4

C: GO TO  LIGHTING SYSTEM 

A: Go to Next Step 

1. Disconnect the multi-display connector E25.
   Fig 1: Disconnecting Multi-Display Connector E25

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.
   STANDARD VOLTAGE SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   ILL+ - Body ground	Light control SW HEAD or TAIL	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the multi-display connector E25.
Fig 2: Checking Harness And Connector (Multi-Display - Body Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   GND1 - Body ground	Always	Below 1

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE MULTI-DISPLAY 

1. Disconnect the navigation controller connector E18.
   Fig 3: Disconnecting Navigation Controller Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.
   STANDARD VOLTAGE SPECIFIED CONDITION
   
   

   Tester connection	Condition	Specified condition
   ILL+ - Body ground	Light control SW HEAD or TAIL	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the combination meter connector E2.
   Fig 4: Disconnecting Combination Meter Connector E2

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

   Tester connection	Condition	Specified condition
   ILL- - E2-11	Always	Below 1

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE NAVIGATION CONTROLLER