Audio & Visual System: Inspection

1. Inspect the continuity between terminals at each switch position shown in TESTER CONNECTION AND SPECIFIED CONDITION .
   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Switch operation	Tester connection	Specified condition
   OFF	3 <=> 4	No continuity
   ON	3 <=> 4	Continuity

   If continuity is not as specified, replace the main switch assy,

2. Inspect the bulb state when connecting the battery to each terminal.
   BATTERY CONNECTION AND SPECIFIED CONDITION
   
   

   Inspection item	Battery connection	Specified condition
   Indicator	Battery positive terminal <=> 3	Comes on
   Indicator	Battery negative terminal <=> 6	Comes on
   Illumination	Battery positive terminal <=> 1	Comes on
   Illumination	Battery negative terminal <=> 2	Comes on

   If operation is not as specified, check the faulty bulb.

3. Inspect continuity of the bulb by connecting the tester as shown in Fig 2.

If continuity exists, replace the main switch assy.

If no continuity exists, replace the bulb.

Fig 2: Inspecting Continuity Of Bulb By Connecting Tester

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Inspect continuity between terminals according to the conditions in TESTER CONNECTION AND SPECIFIED CONDITION .
   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Condition	Tester connection	Specified condition
   Always	1 <=> 2	Continuity
   Always	3 <=> 5	No continuity
   Apply B+ between terminal 1 and 2	3 <=> 5	Continuity

   If continuity is not as specified, replace the point socket relay.

   Fig 3: Inspecting Power Point Socket Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002