Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 28)

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12 Miscellaneous
1st. Blink
Code
Location
Troubleshooting Diagnostic Trouble Codes: Miscellaneous
2nd.
Blink
Code
Diagnostic
Trouble Code
Description
Repair Information
13 Diff. Lock Solenoid
Shorted to Voltage
Verify no continuity between the Diff Lock Solenoid and voltage. Check for corroded/damaged
wiring or connectors between the ECU and Diff Lock Solenoid.
17 ABS disabled due
to off‑road mode
The ABS indicator lamp will be flashing, indicating the ECU is in the off-road ABS mode.
Remove and re‑apply ignition power.
19 Maximum number
of PMV cycles
exceeded
Replace all PMV valves and clear the DTC.
20 Maximum Number
of TCV Cycles
Exceeded
Replace all TCV valves and clear the DTC.
21 ABS Disabled
Due to Engaged
Interlock
The ABS indicator lamp will be flashing to indicate that the ECU is in the ABS Off-road Mode.
Remove and re‑apply ignition power.
23 I/O 3 Shorted High Check for short circuit condition between voltage and the I/O 3 circuit. Verify the resistance
between the Input/Output and voltage is open.
24 HSA Lamp Open
Circuit or Shorted
to GND
Verify that the resistance measured between the battery and HSA lamp output of the ECU
is open. Check the wiring between the ECU and the HSA lamp. Check the condition and
wiring of the HSA lamp.
25 HSA Valve
Solenoid is
Shorted to GND
Verify that there is no resistance measured between ground and the HSA solenoid. Check
for corroded or damaged wiring or connectors between the ECU and the HSA solenoid.
26 HSA Valve Sole‑
noid is Shorted to
Voltage
Verify that there is no resistance measured between voltage and the HSA solenoid. Check
for corroded or damaged wiring or connectors between the ECU and the HSA solenoid.
28 Air system/
Mechanical
Component
Verify brakes are operating correctly. Verify that there is not over‑braking at one or more
wheel end(s). Check the pneumatic plumbing and the exhaust port of the PCVs, TCVs, and
relay valves and confirm that the air is being exhausted from all brake chambers. Verify tire
sizes on the vehicle match the ABS ECU configuration. Verify wheel speed sensors and
tone ring are properly adjusted and in good condition.
29 Air system/
Mechanical
Component
Verify tires are in good condition. Verify pneumatic hoses are not twisted or kinked. Verify
that the brakes are operating correctly. Verify that the wheel speed sensor and tone ring
are properly adjusted. Verify tire size.
31 HSA Lamp Shorted
to Voltage
Verify that there is no resistance measured between the battery and HSA lamp output of
the ECU. Check the wiring between the ECU and HSA lamp. Check the HSA lamp and
condition of its wiring.
33 HSA Lamp Sole‑
noid Open Circuit
Verify resistance across the HSA solenoid. Check the ECU and HSA solenoid for corroded
or damaged wiring and/or connectors.