Display Signal Circuit between Multi-display and Television Camera Assembly: Procedure

1. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying L114 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L114-17 (CGND) - Body ground	Always	Below 1 Ω
   L114-16 (V-) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   L114-6 (CA+) - L114-17 (CGND)	Engine switch on (IG), shift lever in R	5.8 to 6.5 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Display and Navigation Module Display)

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (w/ Navigation system [for HDD])	B
   NG (w/ Navigation system [for DVD])	C
   NG (w/o Navigation system)	D

D → See step   8 

C → See step   7 

B → See step   6 

A: Go to next step 

1. Disconnect the L114 display connector.
2. Disconnect the S35 camera connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   L114-6 (CA+) - S35-4 (CB+)	Always	Below 1 Ω
   L114-17 (CGND) - S35-3 (CGND)	Always	Below 1 Ω
   L114-5 (V+) - S35-2 (CV+)	Always	Below 1 Ω
   L114-16 (V-) - S35-1 (CV-)	Always	Below 1 Ω
   L114-6 (CA+) - Body ground	Always	10 kΩ or higher
   L114-17 (CGND) - Body ground	Always	10 kΩ or higher
   L114-5 (V+) - Body ground	Always	10 kΩ or higher
   L114-16 (V-) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Using an oscilloscope, check the waveform.
   Fig 2: Identifying Display And Navigation Module Display And Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a

   Component with harness connected (Display and Navigation Module Display)

   -

   -

   MEASUREMENT CONDITION
   
   

   Item	Content
   Tester Connection	L114-5 (V+) - L114-16 (V-)
   Tool Setting	0.2 V/DIV., 0.2 μs/DIV.
   Condition	Engine switch on (IG), shift lever in R*1 Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens*2

   OK

   Pulses are as shown in the illustration.

NG → See step   5 

OK → See step   4