KMS MP25 - Fault Tracing; Specifications

KMS MP25(M)/MA25(M) manual Version 4.2
61
6 Fault tracing
Fault
Possible causes
Solution
No communication between PC
and system
- No power supply to the system
- Defective or incorrect
communication cable
- Cable connected to wrong COM
port (standard is COM3)
- Switch the contact on or check the
fuse
- Use a USB A Male – USB B Male
data cable
- Connect cable to COM3 or select
another COM port; see section
3.2.4.1.17 Communication port
Engine does not start
- No engine speed signal
- Crank Type set is not correct
- Start-up menu settings are not
correct
- Check the sensor and wiring
- See section 3.2.4.1.1 RPM pickup
- Set duration of injection to the
correct value
Poor engine starting when the
engine is cold
- Engine temperature correction
table not correctly set
- Set correction table correctly
Poor accelerator to engine
response
- Incorrect setting of acceleration
enrichment
- Defective engine load sensor
- Engine load sensor not calibrated
- Adjust values in throttle pump
effect menu
- Check whether the engine load
indicated on the dashboard changes
evenly when the accelerator is
slowly depressed
- See paragraph 3.2.4.1.3 Engine
load sensor
Temperature reading gives
incorrect value
Temperature reading gives --- in
the communication bar
- Wrong type of NTC temperature
sensor
- Sensor not connected or short
circuit in sensor wiring
- Fit the correct temperature
sensor; see the Appendix about
sensors on the CD-ROM for the
correct type
- Check the wiring
Auto calibration gives message
'warning range too small'
Auto calibration gives message
'warning signal reversed'
Auto calibration gives message
'engine load sensor not
connected'
- Sensor range too small or
potentiometer connected
incorrectly
- Throttle valve potentiometer
turns in the wrong direction
- The engine load sensor signal
does not change
- Interruption in potentiometer
signal wiring
or potentiometer does not turn
when the throttle valve is opened
- Check the wiring
- Fill in the values of the engine
load sensor manually
- Interchange the earth and 5V
wiring of the potentiometer
Only coils 1-4 give ignition
- Dis coil box not ticked
- See paragraph 3.2.4.1.1 RPM
pickup
7 Specifications