freightliner Run Smart ECASCADIA PE116DC 2022, Maintenance Manual

Page: 90 / 100

discoloration, high amperage heating or
discoloring. If needed, remove connectors and
terminals, scrub and clean as needed using a
nylon brush. Clean debris with vacuum or
electrical contact cleaner such as CRC QD®
Electronic Cleaner, inspect terminals and mating
contact terminal plating. If the terminal plating
exhibits signs of unrecoverable corrosion, the
component and terminal will need to be replaced.
10. Inspect sealed harness connectors for presence
of connector housing seals and connector pin
seals designed to keep moisture and debris from
entering the connector and component. Missing,
leaking, or damaged seals will result in moisture
and debris entering the connection and the
component and will result in component failure.
When it is determined that connector seals have
not properly prevented moisture and debris from
entering the component, the entire component
must be replaced.
11. Inspect component harnesses for secured
routing that prevents excess harness movement
and prevents the harness from pulling too tight
on the connector. Inspect harnesses for signs of
rubbing or chafing that could result in wire circuit
damage. Damaged wiring and/or damage to
harness protective wrap must be repaired and
harness must be wrapped and secured to
prevent further damage. When possible, harness
should be routed with drip loop.
12. Inspect fuses and relays for correct fit, and that
the terminals hold the fuses and relays firmly in
place. Inspect fuses and relays for signs of
corrosion, thermal distortion, warping,
discoloration, and high amperage heating or
discoloring. If loose or corroded, remove, inspect,
clean, and replace as needed.
13. Connect the batteries.
54–03 Gas Detection System
Sensor Testing
Daimler Truck strongly recommends that all
operators follow California Code of Regulations
(CCR) inspection requirements, regardless of where
the vehicle is operated. Per Title 13 CCR
§
935 (2),
gas detection systems should be tested three times
per year at equal intervals. The testing procedure
should simulate the same operating environment in
which the vehicle is used. Test results validating the
performance of the gas detection system within the
parameters established by the component
manufacturer and NFPA 52 should be maintained as
a permanent part of the vehicle service records. Use
of alcohol, propane, and other harsh liquids or gases
are not acceptable methods of testing.
Test the sensors three times per year, after any
system component has been replaced, or if the
vehicles was involved in an accident or fire. The gas
detection system sensors must be tested regularly by
a trained technician using certified test equipment
that satisfies CCR
§
935 (2) or NFPA 52 regulations.
Daimler Truck recommends the highest level of
safety validation if there are multiple validation
requirements in the state or locally where the vehicle
is operated or parked.
1. Press and hold the Push To Test button for one
minute. The system will proceed with a self-
diagnostic test that will include illumination of the
Trace and Significant gas concentration lights,
and the sensor fault lights.
2. Verify the large red light and buzzer activate, and
that all lights illuminate or flash to ensure that all
bulbs are operational.
3. Sensor Test: The gas detection system sensors
must be tested using qualified test gas, which
can be purchased as part of a test kit. Testing
with alcohol or heavy gases such as butane or
propane does not satisfy CCR
§
935 (2) or NFPA
52 regulations. Expose each sensor to qualified
test gas for at least 30 seconds. The system will
proceed through the alarm procedure consistent
with a significant leak and the buzzer will sound
after approximately 15 seconds. If a sensor fails
to respond after exposure to the test gas,
replace the sensor.
Testing the Natural Gas
Detection System
Table 1 describes the control module functions
during testing.
Electrical, Instruments, and Controls
54
eCascadia Maintenance Manual, 10/03/2022
54/2