Suzuki GSX-R1000 2007, Service Manual

Page: 225 / 549

4-70 FI SYSTEM DIAGNOSIS
STP sensor input voltage: 4.5 – 5.5 V
( R – Ground)
( R – B/Br)
\
09900-25008: Multi-circuit tester set
W
Tester knob indication: Voltage ( )
Is the voltage OK?
Step 1 (When indicating P1654-H:)
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (
5-3)
3) Check the STP sensor coupler for loose or poor contacts.
If OK, then check the STP sensor lead wire continuity.
4) Disconnect the STP sensor coupler.
5) Check the continuity between Y/W wire
and R wire .
If the sound is not heard from the tester, the circuit condition
is OK.
6) Disconnect the ECM coupler.
7) Check the continuity between Y/W wire
and terminal
)
.
8) Also, check the continuity between B/Br wire and terminal
:
.
STPS 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?
9) After repairing the trouble, clear the DTC using SDS tool.
( 4-28)
YES Go to Step 2.
NO
• Loose or poor contacts on the ECM coupler
(terminal or
:
)
• Open or short circuit in the R wire or B/Br wire
1
V
1
1
YES Go to Step 2.
NO Y/W wire shorted to VCC, or B/Br wire open
ECM coupler (Harness side)
(Black) (Gray)
1
?