Diagnosis Procedure
1.CHECK CONNECTOR
2.CHECK HARNESS FOR OPEN CIRCUIT

3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A/C auto amp. Refer to the following.
M&A branch line circuit
STRG branch line circuitIndicator lights
For additional information, refer to "Vehicle information
display" in this section.
Front fog light indicator
light
(green)
The front fog light indicator light illuminates when
the front fog lights are on. For additional information,
refer to "Fog light switch" in this section.
Front passen ...
System temporarily unavailable
When radar blockage is detected, the system will
be deactivated automatically. The "Side Radar
Obstruction" warning message will appear and
the BSW/RCTA indicator (white) will blink A in
the vehicle information display.
The systems are not available until the conditions
no longer exist.
...
Back-up lamp
Wiring Diagram
...