DESCRIPTION
This circuit provides power to the laser sensor. The laser sensor emits radio waves towards an object in front and measures the distance and direction of the object by receiving the beam reflections. Based on the reflections, the sensor calculates the difference in speed between the vehicle and the object in front.
This data is transmitted to the distance control ECU. The ECM recognizes the laser sensor via terminals LGND. If an open circuit occurs in the wire harness between terminals LGND, the ECM cannot recognize the laser sensor. The ECM will stop the control of the vehicle-to-vehicle distance control mode and only the constant speed control mode can be used.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK DISTANCE CONTROL ECU (IGB VOLTAGE)
Standard voltage
2 CHECK HARNESS AND CONNECTOR (LASER SENSOR - ECM AND BODY GROUND)
Standard resistance
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
3 CHECK HARNESS AND CONNECTOR (LASER SENSOR - DISTANCE CONTROL ECU)
Standard resistance
REPLACE DISTANCE CONTROL ECU
Overview
Buttons in the vehicle
Climate control functions
Temperature.
Recirculated-air mode.
Maximum cooling.
AUTO program.
Air flow, manual.
Switching off.
Air distribution, manual.
Defrost and defog the
windshield.
Rear window defroster.
Seat heating
Climate control operation.
Opening t ...
Brake fluid
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
“MAX” line
“MIN” line
Adding fluid
Lift the cover off.
Make sure to check the fluid type and prepare the necessary item.
Brake fluid can absorb moisture from t ...
Comfort Access
Concept
The vehicle can be accessed without operating
the vehicle key.
Carrying the vehicle key with you, e.g., in your
pants pocket, is sufficient.
The vehicle automatically detects the vehicle key
when it is in close proximity or in the car's interior.
Unlocking the vehicle
Grasp the handle of ...