Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - AUDIO / VIDEO
INSPECT COMBINATION METER ASSEMBLY (OUTPUT WAVEFORM)
CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)
AUDIO AND VISUAL SYSTEM (w/o Navigation System) - Vehicle Speed Signal Circuit between Radio Receiver and Combination Meter
DESCRIPTION
Speed signals are received from the combination meter assembly and used to cancel "Bluetooth" function operation.
The radio receiver assembly recognizes that the vehicle is being to driven and makes it impossible to connect or register a "Bluetooth" device while driving.
- HINT:
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT COMBINATION METER ASSEMBLY (OUTPUT WAVEFORM) |
Check the output waveform.
Remove the combination meter assembly with the connector still connected.
Connect an oscilloscope to terminal E7-4 (+S) and body ground.
Turn the engine switch on (IG).
Turn the wheel slowly.
Check the signal waveform according to the condition(s) in the table below.
| Item | Condition |
| Measurement terminal | E7-4 (+S) - Body ground |
| Tool setting | 5 V/DIV., 20 ms./DIV. |
| Vehicle condition | Driving at approx. 20 km/h (12 mph) |
- OK:
- The waveform is displayed as shown in the illustration.
| *1 | Component with harness connected (Combination Meter Assembly) |
- HINT:
- When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.
|
| ||||
| OK | |
| 2.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY) |
Disconnect the F19 radio receiver assembly and E7 combination meter assembly connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition F19-3 (SPD) - E7-4 (+S) Always Below 1 Ω
|
| ||||
| OK | ||
| ||