User's Manual

Fault Isolation Procedures
Power-Up Sequence Test
2-6
Power-Up Sequence Test
Step A Procedure Condition Action
Step B Procedure Condition Action
1. Before performing this test, the
Electrical Pretest must pass.
2. Key on.
3. Observe the Driver
Display Unit.
1. Key on.
2. Disconnect the 4-way connector
from the Driver Display Unit.
Note: Not applicable for
Freightliner IDI.
3. Measure voltage
between pins C and D
on the Driver Display
Unit 4-way connector.
If lights turn on the go off
after approximately 15
seconds
Note: Not applicable for
Freightliner IDI
If lights fail to turn on
If lights turn on and stay on
If voltage is between 7.0
and 7.5 volts
If voltage is outside of
range
Test complete.
Go to Step B.
Go to Step C.
Go to Step C.
Go to Step G.
VOLT
V ACOM
D C B A