Suzuki VZ800 Service Manual page 195

5-38 FI SYSTEM
Step 1 (When indicating P0120-H:)
1) Remove the fuel tank. (6-3)
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 BI/B wire A and Red wire B.
If the sound is not heard from the tester, the circuit condition is
OK.
6) Remove the right frame cover (8-4), ECM bracket 1 and
disconnect the ECM coupler.
7) Check the continuity between BI/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 BI/B wire shorted to VCC, or B/Br wire open
9) After repairing the trouble, clear the DTC using SDS tool.
(5-25)
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