User's Manual
8
INDICATOR LAMPS AND POWER-UP
SEQUENCE
NOTICE: The vehicle operator should Verify the proper
operation of all installed indicator lamps (ABS, ATC/ESP,
and trailer ABS) when applying ignition power and during
vehicle operation. See Figure 10.
Lamps that do not illuminate as expected when ignition
power is applied, or remain illuminated, indicate the need
for maintenance.
ABS System
Status Indicators
at Start-Up
Trailer ABS
Indicator Lamp
(PLC Detected)**
Trailer ABS
Indicator Lamp**
(PLC Not Detected)
Powered Vehicle ABS
Indicator Lamp
Power
Application
ON
OFF
ON
OFF
0.5 2.0 2.5 3.0 (sec.)1.5
ON
OFF
ATC/ESP
enabled
No ESP
or ATC
ATC/ESP System
Status Indicator
at Start-Up
ON
OFF
Power
Application
ON
OFF
0.5 2.0 2.5 3.0 (sec.)1.5
FIGURE 10 - BENDIX
®
ESP
®
EC‑80
™
CONTROLLER INDICATOR LAMP BEHAVIOR
Mode
ABS
Lamp
ATC/ESP Lamp
Trailer
ABS Lamp
HSA
Lamp
Comments
At Vehicle Startup
Ignition on ‑ start up
[trailer with Power Line
Carrier (PLC)]
ON for
three (3)
seconds*
ON for 2.5
seconds*
ON for
three (3)
seconds**
ON for
three (3)
seconds*
*
If any of the described lamp behaviors
do not occur — or if the lamp remains
on during operation — have the vehicle
serviced by a qualied mechanic as
soon as possible to restore full system
functionality.
**
Some vehicle manufacturers may
illuminate the trailer ABS indicator lamp
at power‑up regardless of whether a
PLC signal is detected from the trailer or
not. Consult the vehicle manufacturer’s
documentation for more details.
3 seconds after ignition
[with no Diagnostic
Trouble Codes (DTCs)]
Lamp OFF* Lamp OFF* Lamp OFF**
Lamp
OFF*
Special Mode Operation
ABS
Off-Road
Mode
Normal
Lamp ashes
slowly (every 2.5
seconds)
Lamp OFF
• Uses dash switch
• Not for rm road surfaces
• Allows more wheel lock‑up (less ABS intervention)
• Mode only applies under 25 mph (Over 25 mph, the system reverts to
full ABS ‑ including ATC/ESP — and upon exiting off‑road mode, the
ATC lamp extinguishes.)
During an ATC
Event
Flashes quickly
‑— OR, depending on vehicle options (a vehicle can have either ABS off‑road or HSA) —
Vehicles with Hill Start Aid (HSA):
During HSA Mode
(“Hill Start” / “Hill Start Assist”)
During HSA Event Lamp OFF
• The HSA lamp is illuminated only at power‑
up, or if an HSA DTC is present
HSA Manually Disabled
Flashes
slowly
Deep
Mud/
Snow/
Mode
Normal OFF
Flashes slowly
(every 2.5
seconds)
• Uses dash switch
• Increases allowable wheel slip during ATC interventions
• Not for rm road surfaces
During an
ATC/ESP
Event
OFF Flashes quickly
During an Automatic Traction Control (ATC) Event Flashes quickly • Reduces wheel slip during acceleration at low speeds
During Dynamometer Mode
Lamp ON
(ATC
Disabled)
• Disables ATC monitoring functions
• When not in Dynamometer Mode, an illuminated lamp indicates an
ATC DTC is present
During an ESP Event Flashes quickly •
System intervenes to reduce the risk of rollovers, loss‑of‑control, etc.
Dash Lamp Behavior for the
Bendix
®
ESP
®
EC-80
™
Controller
TRLR
ABS
ATC
HSA