Suzuki VZR1800 2007 Service Manual page 244

Step 1 (When indicating P0120-L:)
1) Turn the ignition switch OFF.
2) Remove the fuel tank. (#6-3)
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 P/B wire A and ground.
6) Also, check the continuity between P/B wire A and B/Br wire
C. If the sound is not heard from the tester, the circuit condi-
tion is OK.
7) Disconnect the ECM coupler. (#5-37)
8) Check the continuity between P/B wire A and terminal 8.
9) Also, check the continuity between Red wire B and terminal
A.
"
When using the multi-circuit tester, do not strongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
$ 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 1 (#5-41) and go to Step 2.
Red wire or P/B wire open, or P/B wire shorted to
NO
ground
10)After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
FI SYSTEM DIAGNOSIS
1
1
1
(Black)
ECM coupler (Harness side)
5-43
]
]
(Gray)