TM 9-2320-363-20-1
Display: 5 Flashing Lights
Type: Pressure Transducer
System Mode
Condition
Possible Causes*
No operation
No pressure transducer
Transducer electrically disconnected
reading
Pressure signal wire open
Pressure signal wire shorted to ground
Pressure transducer Vref wire open
Pressure transducer Vref wire shorted to ground
Pressure transducer ground wire open
Faulty transducer
Faulty Electronic Control Unit
No operation
High pressure transducer
Pressure signal wire shorted to Vbat or Vref
reading
Faulty transducer
Faulty Electronic Control Unit
* Possible causes are listed in order of likely occurrence.
Code Description
A
"Pressure
Transducer"
code
occurs
when
the
Electronic Control Unit (ECU) receives an unusually high
or low reading from the pressure transducer. A
diagnostic tool will specify which of the two conditions is
responsible for setting the code.
Initial troubleshooting steps involve checking for shorted-
to-ground or an open pressure transducer circuit.
If the circuits check out OK, secondary causes could
involve a faulty transducer or a faulty Electronic Control
Unit.
See "Troubleshooting Tips" on page 3-92.15 for general
guidelines on system diagnostics.
3-92.28 Change 3
