Suzuki GSX-R1000 2007, Service Manual

Page: 211 / 549

4-56 FI SYSTEM DIAGNOSIS
Step 2
1) Turn the ignition switch OFF.
2) Measure the IAT sensor resistance.
IAT sensor resistance: Approx. 2.58 k
Ω
at 20 °C (68 °F)
(Terminal – Terminal)
\
09900-25008: Multi-circuit tester set
V
Tester knob indication: Resistance (
Ω
)
Is the resistance OK?
IAT sensor specification
NOTE:
IAT sensor resistance measurement method is the same way as
that of the ECT sensor. Refer to page 7-7 for details.
2
YES
• Dg or B/Br wire open or shorted to ground, or
poor
8
or
:
connection
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Replace the IAT sensor with a new one.
Intake Air Temp Resistance
0 °C (32 °F) Approx. 6.54 k
Ω
20 °C (68 °F) Approx. 2.58 k
Ω
40 °C (104 °F) Approx. 1.14 k
Ω
80 °C (140 °F) Approx. 0.28 k
Ω
ECM coupler (Harness side)
2
(Black) (Gray)