Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

Check the back light condition of Night View Display.
PREPARATION:
1. Turn the ignition switch ON.
2. Switch to Inspection Mode (See PRE-CHECK ).
CHECK:

Check that the back light of the Night View Display comes on.

OK:
1. The back light comes on.
1. NG: Go to step 6 .
2. OK: Go to Next Step.
Check Night View Camera using SST.
PREPARATION:
1. Remove the over head junction (map light cover).
2. Remove the connector from the Night View Camera.
3. Connect SST to the wire harness of the Night View Camera on the body side as shown in the illustration.
  SST 09991-00610
  
  Fig 1: Checking Night View Camera Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Ignition switch ON.
5. Inspection Mode ON (See PRE-CHECK ).
CHECK:

Check the screen of the Night View Display.

OK:
1. 3 levels of Black-White shade intensity displayed.
1. NG: Go to step 3.
2. OK: Replace Night View Camera.
Check voltages between terminal CB+ of Night View Camera and body ground.
PREPARATION:
1. Disconnect the SST.
2. Ignition switch ON.
3. Inspection Mode ON (See PRE-CHECK ).
CHECK:

Measure voltage of terminal CB+ on the vehicle side as shown in the illustration.

OK:
1. Voltage: Above 6 V
  
  Fig 2: Checking Voltages Between Terminal CB+ Of Night View Camera
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Go to step 7 .
2. OK: Go to Next Step.
Check for an open or short circuit in the wire harness between the Night View Camera (CV+) and Night View ECU (NTSC) (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
PREPARATION:
1. Remove the combination meter.
2. Remove the connector "N6" from Night View ECU.
CHECK:

Fig 3: Checking For Open Or Short Circuit In Wire Harness Between Night View Camera (CV+) And Night View ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check resistance between terminal NTSC of connector "N6" and CV+ of connector "N9".

(Terminals of ECU: See TERMINALS OF ECU )

OK:
1. Resistance: Less than 1 Ω
CHECK:

Check resistance between terminal NTSC of connector "N6" and body ground.

OK:
1. Resistance: More than 10 kΩ
RESULT:

Fig 4: Identifying Result Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. B: Go to step 5.
2. C: Repair or replace wire harness or connector.
3. A: Replace Night View ECU.
HINT:

If the symptom still occurs, replace the Night View Display.
Using an oscilloscope, check the output waveform between terminal VG of Night View ECU and body ground.
PREPARATION:
1. Connect the connector of the Night View Camera.
2. Turn the ignition switch ON.
3. Switch to Inspection Mode (See PRE-CHECK ).
CHECK:

Fig 5: Locating Night View Display Connector - C
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using an oscilloscope, check the output waveform between terminal VG of the Night View ECU connector "C" and body ground. (Terminals of ECU: See TERMINALS OF ECU )

Fig 6: Identifying Connector - C
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:
1. The output waveform is as shown in the illustration. (Reference) oscilloscope condition:
  
  Fig 7: Item Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 8: Identifying Waveform
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace Night View ECU.
2. OK: Replace Night View Display.
Check voltage between terminals DIM, C/C CUT, IG of Night View ECU and body ground.
PREPARATION:
1. Remove the combination meter.
2. Ignition switch ON.
CHECK:

Fig 9: Locating Night View Display Connector - C
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure voltage between terminals DIM, C/C CUT, IG of the Night View ECU connector "C" and body ground.

(Terminals of ECU: See TERMINALS OF ECU )

OK:
1. Voltage:
2. DIM: Approx. 5 V
3. C/C CUT: Approx. 5 V
4. IG: Above 10 V
5. (All the 3 terminal voltages must meet the standard.)
  
  Fig 10: Measuring Voltage Between Terminals DIM, C/C CUT, IG Of Night View ECU Connector - C
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Replace Night View ECU.
2. OK: Replace Night View Display.
Check voltage between terminal 6VOUT of Night View ECU and body ground.
PREPARATION:
1. Disconnect the connector "N9" from the Night View Camera.
2. Remove the combination meter.
3. Ignition switch ON.
4. Inspection Mode ON (See PRE-CHECK ).
Fig 11: Identifying Connector - N9 - From Night View Camera
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK:

Fig 12: Locating Vehicle Wire Connector - N6
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure voltage between terminal 6VOUT of the Night View ECU connector "N6" and body ground.

(Terminals of ECU: See TERMINALS OF ECU )

OK:
1. Voltage: 5.7 to 6.3 V
  
  Fig 13: Measuring Voltage Between Terminal 6VOUT Of Night View ECU Connector - N6
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Repair or replace wire harness or connector.
2. NG: Go to Next Step.
Check voltage between terminal 6VIN of Night View ECU and body ground.
PREPARATION:
1. Ignition switch ON.
2. Inspection Mode ON (See PRE-CHECK ).
CHECK:

Fig 14: Identifying Night View Battery ECU Connector - B
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure voltage between terminal 6VIN of the Night View ECU connector "B" and body ground.

(Terminals of ECU: See TERMINALS OF ECU )

OK:
1. Voltage: 5.7 to 6.3 V
  
  Fig 15: Measuring Voltage Between Terminal 6VIN Of Night View ECU Connector - B
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Go to step 9.
2. OK: Replace Night View ECU.
Check wire harness between terminals VGL, VDD, and VGH of Night View Battery ECU and Night View ECU (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
PREPARATION:

Remove the wire harness between the Night View Battery ECU and the Night View ECU.

Fig 16: Checking Wire Harness Between Terminals VGL, VDD, And VGH Of Night View Battery ECU And Night View ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK:

Check the resistance between terminals VGL, VDD, and VGH of connector "D" and those of "B".

(Terminals of ECU: See TERMINALS OF ECU )

OK:
1. Resistance: Less than 1 Ω
1. NG: Replace wire harness.
2. OK: Replace Night View Battery ECU.