BENDIX BW2849 Power-Up Sequence Test, Key on Observe the Driver If lights turn on the go off

Fault Isolation Procedures

Power-Up Sequence Test

Step A Procedure Condition Action

1.Before performing this test, the Electrical Pretest must pass.

2.Key on.

3. Observe the Driver	If lights turn on the go off	Test complete.
Display Unit.	after approximately 15
	seconds
	Note: Not applicable for
	Freightliner IDI
	If lights fail to turn on	Go to Step B.
	If lights turn on and stay on	Go to Step C.

Step B Procedure Condition Action

1.Key on.

2.Disconnect the 4-way connector from the Driver Display Unit.

Note: Not applicable for

Freightliner IDI.

3. Measure voltage	If voltage is between 7.0	Go to Step C.
between pins C and D	and 7.5 volts
on the Driver Display
Unit 4-way connector.
	If voltage is outside of	Go to Step G.
	range

				VOLT
D	C	B	A
			V	COM	A

Power-Up Sequence Test

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