FG Wilson OLYMPIAN 1001 Series Manual page 19

Electronic Engine Fault Detection Flash Codes
Perkins 1306-E87 electronic engines automatically record engine
faults in the Electronic Control Module (ECM) to assist the operator
or engineer in troubleshooting. The fault codes can be read using
the red and amber lamps situated on the top of the relay box. The
relay box can be found mounted on the alternator box below the
AVR. The relevant codes can be identified using the fault-finding
table below.

Two types of codes may be observed: "active" and "inactive"
codes. Active codes are new faults identified which must be
rectified before the generating set is operated again. Inactive
codes are all codes which have been previously logged.

To operate the fault finding diagnostic codes, press and hold
the red pushbutton. The lamps will flash in the following
sequence: amber-red-amber-amber. Once this sequence has
finished, while still holding the red button, press and release
the green button. Observe the sequence of the flashing
lamps.

If there are no active codes retained in the memory of the
ECM, the red lamp will flash once, then the amber lamp will
flash three times.

ECM, the red lamp will flash once. The active codes will then
flash on the amber lamp. If there is more than one code there
will be a short delay between codes.
Flash
code Condition description
111 No errors found
112 Electrical system voltage B+ out of range:
high
113 Electrical system voltage B+ out of range:
low
114 Engine coolant temperature signal out of
range: low
115 Engine coolant temperature signal out of
range: high
121 Manifold air pressure signal out of range:
high
122 Manifold air pressure signal out of range:
low
123 Manifold air pressure fault: in range
124 Injection control pressure signal out of
range: low
125 Injection control pressure signal out of
range: high
131 Speed control signal out of range: low
132 Speed control signal out of range: high
133 Speed control signal fault: in range
134* Speed control position does not match the
idle validation switch.
135* ECM low idle validation switch faulty.
141* Vehicle speed signal out of range: low
142* Vehicle speed signal out of range: high

When all of the active codes have been shown, the red lamp
will flash twice. Then, if there are any inactive codes
retained, the amber lamp will flash a code. If there is more
then one code there will be a short delay between codes.

When the test is complete, the red lamp will flash three times.

Make a note of any codes that are shown. Active codes will
become inactive if the test is done for a second time.
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Figure 4.3: 1306-E87 Electronic Engines Relay Box
Comments
-
ECM voltage is continuously more than 18V
ECM voltage is continuously less than 6.5V.
Cause of no start / misfire
Defaults to 180F (82C). Signal voltage less
than 0.127V
Defaults to 180F (82C). Signal voltage
greater than 4.6V
Defaults to ECM setting. Low power. Slow
acceleration. Signal voltage greater than
4.6V
Defaults to ECM setting. Low power. Slow
acceleration. Signal voltage greater than 4.6v
Defaults to ECM setting. Low power. Slow
acceleration
Defaults to open-loop control. Underrun at
low idle. Signal voltage less than 0.039V
Defaults to open loop control Underrun at low
idle. Signal voltage greater than 4.897V
Signal voltage less than 0.152V.
Engine at low idle only
Signal voltage greater than 4.55V. Engine
idle only
Speed control position does not match the
idle validation switch. Kept to 0% of Speed
control position
Kept to 0% of Speed control position
Speed control position does not match the
idle validation switch. Kept to 50% of Speed
control position. Engine speed limited
Speed sensor signal is less than 0.48V (0
Kmh/mph). Cruise control nor PTO not
engaged. Engine speed limited
Speed sensor signal is greater than 4.492V
(0 Kmh/mph).
Cruise control nor PTO not engaged
15
2
1. Red Lamp
2. Amber Lamp
3. Pushbuttons
Probable causes
-
Charging system fault
Low battery voltage. Loose
connections. High resistance in circuit
Short circuit to earth
Open circuit. Sensor failure
Sensor failure
Short circuit to earth. Sensor failure
Hose or sensor for manifold air
pressure blocked
Short circuit to low. Open circuit.
Sensor failure
Short circuit to high. Sensor failure
Short circuit to earth. Open circuit.
Sensor failure.
Short circuit to reference voltage or 12
volts. Sensor failure
Speed control failure.
Speed control and idle validation switch
failure
Idle validation switch failure
Sensor open circuit or short circuit to
earth
Short circuit to reference voltage or 12
volts
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