Bendix Commercial Vehicle Systems EC-80 ABS ATC SD User Manual
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Troubleshooting Diagnostic Trouble Codes: Power Supply
6
Power Supply
1st. Blink
Code
Location
2nd. Diagnostic
Blink Trouble Code
Code Description
1
Battery Voltage
Too Low
2
Battery Voltage
Too High
Measure battery voltage under load. Check vehicle battery and associated components.
Check for damaged wiring. Check for damaged or corroded connectors and connections.
Measure battery voltage under load. Ensure that battery voltage is correct for the ECU.
Check vehicle battery and associated components. Check for damaged wiring. Check for
damaged or corroded connectors and connections.
Repair Information
Power Supply Tests:
1. Take all measurements at ECU harness connector.
2. Place a load (e.g. an 1157 stop lamp) across battery
or ignition and ground connection, measure ignition
and battery voltage with the load. Ignition‑to‑Ground
should measure between 9 to 17 VDC. Battery‑to‑
Ground should also measure between 9 to 17 VDC.
3. Check for damaged wiring, damaged or corroded
connectors and connections.
4. Check condition of vehicle battery and associated
components, ground connection good and tight.
5. Check alternator output for excessive noise.
Connector
Pin
Power Supply Test
X1
1 Ground
18 Way
3
Ignition
16 Battery
Cab-mount ECU:
Looking into wire harness connector