Suzuki RM-Z250 Service Manual page 229

12-46 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P0110-L:)
1) Stop the engine.
2) Remove the seat and fuel tank rubber band. (5-2, 13-2)
3) Check the IAT sensor coupler 1 for loose or poor contacts.
If OK, then check the IAT sensor lead wire continuity.
4) Remove the fuel tank. (13-2, -3)
5) Disconnect the IAT sensor coupler and ECM coupler.
(12-60)
6) Check the continuity between Dg wire A and ground. If the
sound is not heard from the tester, the circuit condition is OK.
 Tester knob indication: Continuity test ()
7) Connect the IAT sensor coupler.
8) Insert the needle-pointed probe to the lead wire coupler.
9) Connect a 12 volts battery by using the battery lead wire to
the service coupler. (12-19)
10)Measure the voltage between Dg wire A and ground.
 IAT sensor output voltage: 0.19 – 4.92 V
 09900-25008: Multi circuit tester set
09900-25009: Needle-pointed probe set
36890-28H00: Battery lead wire (option)
 Tester knob indication: Voltage ()
Are the continuity and voltage OK?
YES Go to Step 2.
• Dg wire shorted to ground.
NO
• If wire is OK, go to Step 2.
(+ Dg – - Ground)
1
1
1
V