Bendix Commercial Vehicle Systems EC-80 ABS ATC SD - Manual (Page 23)

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Troubleshooting Diagnostic Trouble Codes:
Traction Control Valves
18 Traction Control Valve
1st. Blink
Code
Location
2nd. Diagnostic
Blink Trouble Code
Code Description
1 TCV Solenoid
Shorted to
Ground
2 TCV Solenoid
Shorted to
Voltage
3 TCV Solenoid
Open Circuit
4 TCV
Configuration
Error
Verify 7 to 19 ohms between TCV and TCV common. Verify no continuity between
TCV leads and ground. Check for corroded/damaged wiring or connectors between
ECU and TCV.
Verify 7 to 19 ohms between TCV and TCV common. Verify no continuity between
TCV leads and voltage. Check for corroded/damaged wiring or connectors between
ECU and TCV.
Verify 7 to 19 ohms between TCV and TCV common. Check for corroded/damaged
wiring or connectors between ECU and TCV.
The ECU is not configured for ATC, but has detected the presence of a TCV. Verify
TCV wiring. Inspect for the presence of a TCV. Verify ECU configuration.
Repair Information
Cab-mount ECU:
Looking into wire harness connector
Automatic Traction Control Valve Inspections should include:
• Looking for kinked air hoses, inside the harness socket for removed or corroded connector pins; and a test to
verify that the ATC valve solenoids are functioning correctly.
Location Measurement
TCV to TCV Common 7 to 19 Ohms
TCV or TCV Common Open Circuit (no continuity)
to Voltage or Ground
Connector Pin Traction Control Test
X1 4 Traction Control Valve Common
18 Way 5 Traction Control Valve
Repair Tests:
1. Take all measurements at ECU harness
connector pins in order to check wire harness
and traction control valve. Probe the
connector carefully so that the terminals are
not damaged.
2. Tractor Control Valve resistance
measurements should read: