Speed Signal; Coolant Temperature Signal; Diagnostics Line - KTM 990 Adventure Repair Manual

7-54

Speed signal

(output)
The tachometer output can be tested and controlled with the KTM
diagnostics tool.
If the tachometer fails to react, perform the following tests:
– Check the wiring from connector CO Pin 14 cable colour blue/white
to connector AG Pin 2 for continuity.

Coolant temperature signal

The coolant temperature output can be tested and controlled with the
KTM diagnostics tool.
If the coolant temperature display does not react, perform the following
tests:
– Check the wiring from connector CO Pin 34 (orange/yellow cable) to
connector AA Pin 12 for continuity.
NOTE: the coolant temperature display will rise very slowly when
controlled and will drop very slowly afterwards.

Diagnostics line

If there is not connection between the KTM diagnostics tool and the
vehicle ECU, perform the following test:
– Ground supply (brown cable) at connector AP1 Pin 6.
– 12-volt supply (orange cable) at connector AP1 with the ignition
switched on.
– Check the wiring from connector AP1 to connector AO for continuity
(yellow cable).
(output)