System for displaying trouble in an electronic control system of a motor vehicle

• US 4,884,056 A
• Filed: 08/16/1988
• Issued: 11/28/1989
• Est. Priority Date: 09/07/1987
• Status: Expired due to Fees

• Current Assignee: Fuji Heavy Industries Limited (Subaru Corp.)
• Original Assignee: Fuji Heavy Industries Limited (Subaru Corp.)
• Inventors: Ishizeki, Seiichi
• Primary Examiner(s): Orsino, Joseph A.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/232,796
• Time in Patent Office: 469 Days
• Field of Search: 340/52 B, 340/52 C, 340/505, 340/512, 340/454, 340/453, 340/452, 303/92
• US Class Current: 340/453
• CPC Class Codes: B60T 2270/416 Wheel speed sensor failure
• CPC Class Codes: B60T 8/885 using electrical circuitry

Abstract

A system for displaying trouble in an electronic control system such as an anti-skid brake system of a motor vehicle. The system has a detector for detecting failure in a wheel speed sensor, and a warning lamp for displaying a detected failure. When a failure in the sensor is displayed on the lamp, an inspector depresses a brake pedal of the vehicle in accordance with a predetermined pattern to intermittently turn on a brake pedal switch to produce a failure signal representing the nature of the detected failure. In response to the failure signal, the warning lamp intermittently lights up in accordance with a predetermined pattern representing the nature of the failure.

Claims

1. A system for displaying trouble in an electronic control system of a motor vehicle having detecting means for detecting failure in the electronic control system, and a warning lamp for displaying a detected failure, the system comprising:

means for detecting nature of a failure in the electronic control system;

comparing means for comparing the pattern of a pulse signal generated by operating a brake pedal switch in the vehicle with a predetermined stored pattern and for producing a failure signal representing the nature of the detected failure; and

display means responsive to the failure signal for intermittently lighting the warning lamp in accordance with a predetermined pattern representing the nature of the failure.

2. The system according to claim 1 wherein the electronic control system is an electronic brake control system.

3. The system according to claim 1, wherein:

said electronic control system includes a plurality of wheel speed sensors, and wherein the detected failure is failure of one of said wheel speed sensors and the nature of the failure represents the position of the failed wheel speed sensor.

4. The system according to claim 1, wherein:

the electronic control system is an anti-skid brake system.