Suzuki 125 Service Manual page 71

70 RV125K7 ('07-MODEL)
5) If OK, then check the continuity between each terminal and
ground.
 Fuel injector continuity: ∞ Ω (Infinity)
 09900-25008: Multi-circuit tester set
 Tester knob indication: Resistance (Ω)
Are the resistance and continuity OK?
YES Go to Step 2.
Replace the fuel injector with a new one.
NO
(Page 88)
6) After repairing the trouble, clear the DTC using the SDS tool.
(Page 40)
Step 2
1) Turn the ignition switch ON.
2) Measure the fuel injector voltage between R/W wire and
ground.
 Fuel injector voltage: (Battery voltage – 1.0 V) and more
NOTE:
(Ex.) It is possible that 11.5 V measured when the battery volt-
age is 12.5 V.
 09900-25008: Multi-circuit tester set
 Tester knob indication: Voltage ()
Is the voltage OK?
• R/W or W/Bl wire open or shorted to ground,
poor H or F connection.
• If wire and connection is OK, intermittent trou-
ble or faulty ECM.
YES
• 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 Open circuit in the R/W wire or ECM malfunction.

When using the multi-circuit tester, do not strongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
3) After repairing the trouble, clear the DTC using SDS tool.
(Page 40)
(Terminal – Ground)
(+ R/W – - Ground)
1
2
2
ECM coupler (Harness side)
V