Bendix Commercial Vehicle Systems EC-60 ESP Controllers (Advanced Models) - Manual (Page 30)

30
12 Miscellaneous
1st. Blink
Code
Location
Troubleshooting Diagnostic Trouble Codes: Miscellaneous
2nd. Diagnostic
Blink Trouble Code
Code Description
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 and ABS WL. Verify
ABS WL ground input.
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.
Incorrect supply voltage for the SAS-60 and the YAS-60. Verify proper voltage at sensor connectors. Verify wiring
between the ECU and the sensors. Verify proper output voltage from ECU.
Incorrect supply voltage for the SAS-60 and the YAS-60. Verify proper voltage at sensor connectors. Verify wiring
Repair Information
1 Stop Lamp Switch
Not Detected
2 Stop Lamp Switch
Defective
3 Dynamometer
Test Mode
4 Retarder Relay Open
Circuit or Shorted to
Ground
5 Retarder Relay Circuit
Shorted to Voltage
6 ABS Indicator Lamp
Circuit DTC
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
14 Sensor CAN Supply
Voltage Error
15 - 21 Reserved
22 ESP Sensor Voltage
Out of Range