KTM 990 Adventure Repair Manual page 189

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2
Main relay
Switch on the ignition, the main relay
click). If not, perform the following tests:
– Check the positive voltage at connector AF Pin 2 (orange/white
cable).
– Check the ground supply at connector AF Pin 4 (Braun cable).
If no error is detected, replace the main relay.
NOTE: The fuel pump relay is located on the instrument mount under
the headlight mask in the 990 Adventure model.
If the main relay switches and no error is found during the above tests,
perform the following tests:
– Check the positive voltage at connector AF Pin 1 (green/red cable).
– There should be positive voltage at the connector AF Pin 3 (orange
cable).
If there is positive voltage at connector AF Pin 1 but not at Pin 3 with
the ignition switched on, replace the main relay.
Secondary air valve
(output)
The secondary air valve
2
diagnostics tool. If the secondary air valve fails to switch, perform the
following tests:
– There should be positive voltage at connector CK Pin 2 (ignition on,
orange cable).
– Check the wiring from connector CO to connector CK for continuity.
– The coil resistance of the secondary air valves must be 20 Ohm at
20ºC.
should switch on (audible
1
can be tested and controlled with the KTM
7-51