Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 15)

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Using blink codes, the technician may review all inactive
trouble codes stored on the ECU.
The ABS indicator
lamp will display inactive diagnostic blink codes when the
diagnostic blink code switch is depressed and released two
times. See page 18 for the index showing trouble codes.
Go to the specific troubleshooting guide page shown there
for further help.
Inactive trouble codes and event history may be retrieved
and cleared by using a hand‑held or PC‑based diagnostic
tool, such as the Bendix ® ACom ® Diagnostics software.
Clearing Active Diagnostic Trouble Codes
The ECU will clear active trouble codes when the diagnostic
blink code switch is depressed and released three (3) times.
System Configuration Check Mode
The ABS indicator lamp will display system configuration
information when the diagnostic blink code switch is
depressed and released four (4) times. The lamp will blink
out configuration information codes using the following
patterns. (See Chart 4).
1st Number System Power
1 12 Volts
2 24 Volts
2nd Number Wheel Speed Sensors
4 4 Sensors
6 6 Sensors
3rd Number Pressure Modulator Valves
4 4 Modulators
5 5 Modulators
6 6 Modulators
4th Number ABS Configuration
1 4S/4M or 6S/6M
2 6S/4M
3 6S/5M
5th Number Traction Control Configuration
2 No ATC
3 ATC Engine Control Only
4 ATC Brake Control Only
5 Full ATC (Engine Control & Brake Control)
6th Number Retarder Configuration
1 No Retarder
2 J1939 Retarder
3 Retarder Relay
4 J1939 Retarder, Retarder Relay
CHART 4 - SYSTEM CONFIGURATION CHECK
In this mode, the ECU tells the technician — by means of
a series of six blink codes — the type of ABS system that
the ECU has been set up to expect. For example, if the
fourth blink code seqiemce is a three, the technician knows
that a 6S/5M sensor/modulator configuration has been set.
Dynamometer Test Mode
The Dynamometer Test Mode is used to disable ATC when
needed (e.g. when performing any vehicle maintenance
where the wheels are lifted off the ground and moving,
including dyno testing). This mode is not reset by power
off, power on cycling. Instead a hand‑held or PC‑based
diagnostic tool must be used to change the setting.
Alternatively, depressing and releasing the blink code
switch three times will cause the ECU to exit the blink
code mode.
Reconfigure ECU Mode
Vehicle reconfiguration is carried out by using the
Reconfigure ECU Mode. (See page 11.) Note: To enter
the Reconfiguration Mode, the blink code switch must be
held in before the application of ignition power. Once the
power is supplied, the switch is released and then pressed
seven times.