ENGINE CONTROL TROUBLE CODE
Blink code EFI warning
lamp (MIL)
Display on diagnostic tool
Error level condition
Function check
Possible cause
Last measure if none of the doc-
umented causes leads to elimi-
nation of the fault
Manifold absolute pressure sensor cylinder 2 - checking the voltage
Condition
The ignition is on.
The diagnostic tool is connected and running.
The engine is switched off.
–
Select the model.
–
Select "ECU Diagnosis".
–
Mark the "Engine management EFI LC8 RC8" control unit.
–
Press "Continue".
–
Select "Measured Values".
–
Highlight "Fuel management general".
–
Press "Continue".
–
Highlight "Manifold absolute pressure sensor cylinder 2 voltage" and deselect the other parameters with "Select live data".
Manifold absolute pressure sensor cylinder 2, voltage "PM2AD"
at: 350 mbar (5.08 psi)
at: 400 mbar (5.8 psi)
at: 450 mbar (6.53 psi)
at: 800 mbar (11.6 psi)
at: 850 mbar (12.33 psi)
at: 900 mbar (13.05 psi)
at: 950 mbar (13.78 psi)
at: 1,000 mbar (14.5 psi)
at: 1,050 mbar (15.23 psi)
»
If the displayed value corresponds to the nominal value:
–
Delete trouble code.
–
Take a test ride.
–
Read out the trouble code memory using the KTM diagnostics tool.
»
If the displayed value is above the nominal value:
–
Check the next possible cause:
Manifold absolute pressure sensor cylinder 2 - the signal wire has an open (
11 EFI warning lamp (MIL) flashes 1x long, 1x short
P1688
"Manifold absolute pressure sensor cylinder 2"
"Input signal too high"
Manifold absolute pressure sensor cylinder 2, voltage "PM2AD": ≥ 4.922 V
Time: ≥ 1 s
Substitute value: 700 mbar (10.15 psi)
Manifold absolute pressure sensor cylinder 2 - checking the voltage (
Manifold absolute pressure sensor cylinder 2 - the signal wire has an open (
Manifold absolute pressure sensor cylinder 2 - the ground wire has an open (
Manifold absolute pressure sensor cylinder 2 - the signal wire has a short circuit to plus (termi-
nal 30) (
p. 375)
Manifold absolute pressure sensor cylinder 2 - the signal wire has a short circuit to ignition plus
(terminal 15) (
p. 375)
Manifold absolute pressure sensor cylinder 2 - the signal wire has a short circuit to the sensor
power supply (
p. 375)
–
Change the manifold absolute pressure sensor cylinder 2.
1.62... 1.68 V
1.77... 1.83 V
1.92... 1.98 V
2.97... 3.03 V
3.12... 3.18 V
3.27... 3.33 V
3.42... 3.48 V
3.57... 3.63 V
3.72... 3.78 V
p. 374)
373
p. 373)
p. 374)
p. 374)