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Troubleshooting – Bendix Commercial Vehicle Systems EC-14 ANTILOCK CONTROLLER 5/04 User Manual

Page 13

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13

Is voltage correct?

Is dash lamp illuminated?

Disconnect 30 pin wire harness

connector from EC-14

controller

and observe the dash lamp.

NO

YES

NO

YES

Repeat the “Initial Start-up

Procedure”

EC-14

Controller

Wire Harness

Connector

1A & 2A

GROUND

With ignition on, measure voltage between

lamp relay (Pin 3F) and ground (Pins 1A, 2A).

Voltage should be same as battery voltage.

Replace the EC-14

controller

Go to Section II

“Inspection for Illuminated

LEDs”

Check wiring harness and relay for shorts to

ground. Reconnect and check/replace the

following:

1. Dash light bulb.
2. Relay power wire.
3. Relay.

After replacing each component test

the dash lamp.

TROUBLESHOOTING

SECTION I

DASH LAMP TESTING

3F

DASH LAMP

RELAY

START HERE