Suzuki VZ800 Service Manual page 211

5-54 FI SYSTEM
Step 1 (When indicating P1651-L:)
1) Remove the right frame cover. (8-4)
2) Turn the ignition switch OFF.
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 Br/W wire B and ground.
6) Also, check the continuity between Br/W wire B and B/Br wire
C. If the sound is not heard from the tester, the circuit condi-
tion is OK.
7) Remove the ECM bracket (5-38) and disconnect the
ECM coupler.
8) Check the continuity between Red wire A and terminal 6.
9) Also, then check the continuity between Br/W wire B and ter-
minal J.
 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 Br/W wire open, or Br/W wire shorted to
NO
ground
10)After repairing the trouble, clear the DTC using SDS tool.
(5-25)
1
1
1
ECM coupler (Harness side)
!