Suzuki GSX-R1000 2007 Service Manual page 249

4-94 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P1657-L:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. ( 5-3)
3) Check the EXCVA position sensor coupler
poor contacts.
If OK, then check the EXCVA position sensor lead wire conti-
nuity.
4) Disconnect the EXCVA position sensor coupler.
5) Check the continuity between Y wire
6) Also, check the continuity between Y wire
. If the sound is not heard from the tester, the circuit condi-
tion is OK.
7) Disconnect the ECM coupler.
8) Check the continuity between Y wire
9) Also, check the continuity between R wire
EXCVA 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 and Go to Step 4.
NO R or Y wire open, or Y wire shorted to ground
10)After repairing the trouble, clear the DTC using SDS tool.
( 4-28)
for loose or
and ground.
and B/Br wire
and terminal .
and terminal .
1
1
1
(Black)
ECM coupler (Harness side)
?
(Gray)