Suzuki VL800 Service Manual page 405

Step 1 (When indicating P0120-H:)
1) Remove the fuel tank. ($14-93)
2) Turn the ignition switch OFF.
3) Check the TP sensor coupler for loose or poor contacts.
If OK, then check the TP sensor lead wire continuity.
4) Disconnect the TP sensor coupler.
5) Check the continuity between Bl/B wire A and Red wire B. If
sound is not heard from the tester, the circuit condition is OK.
6) Disconnect the ECM coupler.
7) Check the continuity between Bl/B wire A and terminal K
8) Also, check the continuity between B/Br wire C and terminal
D.
! TPS lead wire continuity: Continuity (()
" 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
) Tester knob indication: Continuity test (()
Is the continuity OK?
YES Go to Step 2.
NO Bl/B wire shorted to VCC or B/Br wire open.
9) After repairing the trouble, clear the DTC using SDS tool.
($14-39)
VL800K5 ('05-MODEL)
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1
1
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Terminal side
14-53