Suzuki VZR1800 2007 Service Manual page 257

5-56 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P1651-L:)
1) Turn the ignition switch OFF.
2) Remove the fuel tank. (#6-3)
3) Check the TO sensor coupler for loose or poor contacts.
If OK, then check the TO sensor lead wire continuity.
4) Disconnect the TO sensor coupler.
5) Check the continuity between Black wire B and ground.
6) Also, check the continuity between Black wire B and B/Br
wire C. If the sound is not heard from the tester, the circuit
condition is OK.
7) Disconnect the ECM coupler. (#5-37)
8) Check the continuity between Red wire A and terminal A.
9) Also, then check the continuity between Black wire B and
terminal L.
"
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.
$ TOS 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.
Red or Black wire open, or Black wire shorted to
NO
ground.
10)After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
1
1
1
(Black)
ECM coupler (Harness side)
]
]
(Gray)