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MBS-1P Installation
Malfunction Lamp Failure
If the malfunction lamp does not illuminate at power up but the solenoids
perform the self-test (audible sound) or air brake sounds (chuffing sound) with
treadle valve applied, check the following:
• The lamp power harness may be disconnected.
• The bulb may have a bad ground connection.
• The malfunction lamp may be faulty.
If the malfunction lamp does not illuminate on power up and the solenoids do
not perform the self-test, check the following:
• The MBS-1P may not be receiving power. Check the Weather Pack 5-way
power connector for a loose connection.
• The MBS-1P may have failed.
NOTE: When checking for proper operation, keep in mind the
malfunction lamp circuit is only powered for two seconds at initial
power up.
If a replacement part or other customer service is needed, please contact
the Wabash National Corporation Customer Service Department at
765-771-
5404
.
