Bendix Commercial Vehicle Systems EC-60 ATC STD/PREM CONTROLLERS - Manual (Page 26)

26
12 Miscellaneous
1st. Blink
Code
Location
Troubleshooting Diagnostic Trouble Codes: Miscellaneous
2nd. Diagnostic
Blink Trouble Code
Code Description
1 Stop Lamp Switch
Not Detected
2 Stop Lamp Switch
Defective
3 ATC Disabled or
Dynamometer
Test Mode Active
4 Retarder Relay Open
Circuit or Shorted to
Ground
5 Retarder Relay Circuit
Shorted to Voltage
6 ABS Indicator Lamp
Circuit Fault
7 PMV Common
Shorted to
Ground
8 PMV Common
Shorted to
Voltage
9 ATC Disabled to
Prevent Brake Fade
10 Tire Size Out of Range
(Front to Rear)
11 Wheel Speed Sensors
Reversed on an Axle
12 Diff. Lock Solenoid Shorted
to Ground or Open Circuit
13 Diff. Lock Solenoid
Shorted to Voltage
23 I/O 2 or I/O 3 Shorted
High
ECU has not detected the presence of the stop lamp switch since ignition power was
applied (note that stop lamp switch input may be applied to the EC-60 ™ controller using
either hardwire input or J1939). Apply and release service brake. Check for brake switch
input into ECU (see system wiring schematic). With service brake released, check for
presence of the stop lamp bulb. With service brake applied, verify system voltage is now
present at the stop lamp switch input to the ECU. Check for damaged wiring between
ECU, stop lamp switch and bulb. Check for corroded or damaged connectors. Check
for damaged or reversed J1939 wiring. Check for corroded or damaged connectors on
J1939 link. Verify presence of engine ECU on the J1939 link. Verify ECU configuration.
Apply and release service brake. Check for brake switch input into ECU (see system
wiring schematic). With service brake released, check for presence of the stop lamp
bulb. With service brake applied, verify system voltage is now present at the stop lamp
switch input to the ECU. Check for damaged wiring between ECU, stop lamp switch and
bulb. Check for corroded or damaged connectors. Check for damaged or reversed J1939
wiring. Check for corroded or damaged connectors on J1939 link. Verify presence of
engine ECU on the J1939 link. Verify ECU configuration.
ECU has been placed in the Dynamometer Test Mode by either the diagnostic blink code
switch or a hand-held or PC-based diagnostic tool. ATC is disabled.
Verify vehicle contains a retarder relay. Verify ECU configuration. Check wiring between
ECU and retarder relay. Verify no continuity between retarder disable output of EC-60 ™
controller and ground. Verify condition and wiring of the retarder relay.
Check wiring between ECU and retarder relay. Verify no continuity between retarder disable
output of EC-60 ™ controller and voltage. Verify condition and wiring of the retarder relay.
Check operation of diagnostic blink code switch. Check wiring of diagnostic blink code
switch, ABS WL, and ABS WL relay (frame ECUs only). Verify ABS WL ground input
(cab ECUs only).
Verify no continuity between the CMN of all PMVs, TCV, and Diff Lock Solenoid and
ground. Check for corroded/damaged wiring or connectors between the ECU and CMN
of all PMVs, TCV, and Diff Lock Solenoid.
Verify no continuity between the CMN of all PMVs, TCV, and Diff Lock Solenoid and
voltage. Check for corroded/damaged wiring or connectors between the ECU and CMN
of all PMVs, TCV, and Diff Lock Solenoid.
ATC is temporarily disabled to prevent excessive heating of the foundation brakes.
Verify correct tire size as desired. Verify proper tire inflation. Verify correct number of
exciter ring teeth. Verify that the ECU has the proper tire size settings.
Sensors are reversed (left to right) on one of the axles. Verify proper installation,
connection, and wiring of the sensors.
Verify no continuity between the Diff Lock Solenoid and ground. Check for corroded/
damaged wiring or connectors between the ECU and Diff Lock Solenoid.
Verify no continuity between the Diff Lock Solenoid and voltage. Check for corroded/
damaged wiring or connectors between the ECU and Diff Lock Solenoid.
Check for short circuit condition between voltage and the I/O 2 and I/O 3 circuits
Repair Information