Suzuki RM-z450 Owner's Service Manual page 210

12-41 FI SYSTEM DIAGNOSIS
5) If OK, then check the continuity between each terminal and
ground.
# Injector resistance: ∞ Ω (Infinity)
! 09900-25008: Multi-circuit tester set
$ Tester knob indication: Resistance (Ω)
Are the resistance and continuity OK?
YES Go to Step 2.
NO Replace the injector with a new one. ("13-16)
Step 2
1) Connect a 12 volts battery using the battery lead wire to ser-
vice coupler. ("12-22)
2) Insert the needle pointed probe to the lead wire coupler.
3) Measure the injector voltage between Red wire and ground.
# Injector voltage: Battery voltage
! 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
36890-28H00: Battery lead wire (option)
% Tester knob indication: Voltage (&)
Is the voltage OK?
• Gr/W wire open or shorted to ground, or poor F
connection.
• If wire and connection are 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 or short circuit in the Red wire.
(Terminal – Ground)
(+ Red – - Ground)
1
2
2
ECM coupler (Harness side)
V