SM020 - WABCO C TYPE (DISCO I) - Diagnostic Capabilities (Clear Fault Codes)
#WABCO ECU DIAGNOSTIC HOOK UP FULL#
These are an even mix of major faults which are safety related, causing full system shutdown and the warning light to illuminate and minor faults caused by flat batteries, power having been temporarily lost. SM020 - WABCO C TYPE (DISCO I) - Diagnostic Capabilities (Read Fault Codes)Įach ABS system can self-detect up to 64 faults. WABCO C TYPE (DISCO I) - Physical Detailsĭetails of the pin usage for the ECU connector. Vehicle makes, models and variants known or believed to be using this vehicle system, required diagnostic lead and degree of known compatibility. SM020 - WABCO C TYPE (DISCO 1) - System Help file So although the ECU’s look identical to that used in other vehicles of the same age and can be plugged in, they are NOT diagnostically interchangeable. This means that using the wrong module on an ECU can alter the ECU and make it non functional, re using the right module after will not correct this.
#WABCO ECU DIAGNOSTIC HOOK UP CODE#
Also some of them actually require each memory location used for the fault code storage to be re programmed to 0 individually. All ECU resources are then used to monitor the sensors and diagnostic communication is no longer possible until the ignition supply has been disconnected and then re-connected.ĭespite sharing a common communication standard which means they all start communicating the same, and share some very basic features, these ECU’s are actually laid out very differently in respect of their memory usage meaning codes read from one ECU with the wrong program may give incorrect meaning and other codes may not be shown.
Once the ECU has detected a signal from all sensors that indicates each one has exceeded 2km/h the ECU turns off the dash lamp and exits diagnostic mode. It is only possible to communicate with the ABS ECU when the system is in its idle state, that is with the ignition on and the engine running or not. To re-establish diagnostic communication, the ignition must be turned off for approximately five seconds. This is that once they have been communicated with diagnostically and then put to sleep they inhibit the communication with other ECUs sharing the same data bus and even with themselves. This family of ABS ECU's, denoted C type, have common characteristic in the diagnostic element of their design. WABCO C TYPE (DISCO I) (SM020) WABCO C TYPE (DISCO I) - System Overview
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