Diesel Data: Automotive Repair

Distance Control ECU Power Source Circuit








CRUISE CONTROL: DYNAMIC LASER CRUISE CONTROL SYSTEM: Distance Control ECU Power Source Circuit

Distance Control ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the distance control ECU. The distance control ECU determines the vehicle that you are following based on data from the laser sensor and then decides how much acceleration and/or deceleration is needed to maintain the set distance. It also requests the skid control ECU to apply braking and sound the buzzer.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DISTANCE CONTROL ECU





(a) Disconnect the distance control ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:





(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE