PREVOST H3-41 Manual page 102

TECHNICAL INFORMATION
CT (CHECK TRANS) Response
•
Turn off lock-up clutch and inhibit lock-up
operation.
•
Inhibit all shifts.
•
Turn on CHECK TRANS light.
•
Pulse the tone generator for 8 seconds when
the condition is first detected.
•
Blank the select digit in the display.
•
Ignore any range selection inputs and
disable the push-button feedback tone for
the push-button shift selector.
SOL OFF (Solenoid Off) Response
Diagnostic Code List and Description
MAIN SUB
CODE CODE
12 12
12 23
13 12
13 13
13 23
14 12
14 23
21 12
21 23
22 14
22 15
22 16
23 12
23 13
DESCRIPTION
Oil level, low
Oil level,high
ECU imput voltage, low
ECU imput voltage,
medium low
ECU imput voltage, high
Oil level sensor, low
Oil level sensor, high
Throttle position sensor, low
Throttle position sensor, high
Engine speed sensor
reasonableness test
Turbine speed sensor
reasonableness test
Output speed sensor
reasonableness or rapid decel test
Primary Shift Selector
or RSI Link Fault
Primary Shift Selector
Mode Function Fault
8-12
•
All solenoids are commanded off (turning
solenoids "A" and "B" off electrically causes
them to operate hydraulically).
RPR (Return to Previous Range) Response
•
When the ratio or C3 pressure switch tests
associated with a shift are not passed, the
ECU commands the same range as
commanded at the beginning of the shift.
NNC (Neutral No Clutches) Response
•
When certain ratio or C3 pressure switch
tests are not passed, the ECU commands a
neutral condition with no clutches applied.
CHECK
TRANS
LIGHT
No No upshift above
a calibration range
No No upshift above
a calibration range
Yes CT, SOL OFF
(Hydraulic default)
No None: Shift adaptive
feature will not function.
Yes CT, SOL OFF
(Hydraulic default)
No None
No None
No Use Throttle default value
No Use Throttle default value
No Use default engine speed
Yes CT, Lock in current range
Yes CT, Lock in current range
No Hold in last valid direction
No Mode change not
permitted
INHIBITED
OPERATION
DESCRIPTION