Ddec Iii Diagnostic Codes - PREVOST Le Mirage XL Owner's Manual

DDEC III Diagnostic Codes

To read codes:
Use a diagnostic data reader plugged in receptacle on the bottom of side panel of L.H. control panel or
momentarily depress the Stop engine "OVERRIDE" switch (located on the L.H. lower control panel) with
the ignition on, engine at idle or not running. Active codes will be flashed on the stop engine telltale (lo-
cated on central dashboard), followed by the inactive codes being flashed on the check engine telltale
(located on central dashboard). The cycle repeats until the operator depresses again the Stop engine
"OVERRIDE" switch. A code "43" consists of four flashes, followed by a short pause, then three flashes in
quick succession.
DDC Code
Number
(Flashed)
11 Variable speed governor sensor
voltage low
13 Coolant level circuit failed low
14 Coolant temperature circuit failed
high
15 Intercooler temperature failed low
15 Oil temperature circuit failed low
17 Bypass position circuit failed high
21 EFPA circuit failed low
23 Fuel temperature circuit failed high
25 Reserved for "no codes"
26 Aux. shutdown #2 active
28 Air temperature circuit failed low
31 Aux. output #3 short to ground
(high side)
31 Aux. output #4 short to ground
(high side)
32 SEL short to battery
34 Turbo boost pressure circuit failed
low
36 Oil pressure circuit failed high
Description
5 - 7
DDC Code
Number
(Flashed)
12 Variable speed governor sensor
voltage high
14 Intercooler temperature circuit
failed high
14 Oil temperature circuit failed high
15 Coolant temperature circuit failed
low
16 Coolant level circuit failed high
18 Bypass position circuit failed low
22 EFPA circuit failed low
24 Fuel temperature circuit failed low
26 Aux. shutdown #1 active
27 Air temperature circuit failed high
31 Aux. output #3 open circuit (high
side)
31 Aux. output #4 open circuit (high
side)
32 SEL open circuit
33 Turbo boost pressure circuit failed
high
35 Oil pressure circuit failed high
37 Fuel pressure circuit failed high
TECHNICAL INFORMATION
Description