Suzuki RM-z450 Owner's Service Manual page 212

12-43 FI SYSTEM DIAGNOSIS
6) Connect a 12 volts battery using the battery lead wire to ser-
vice coupler. ("12-22)
7) Insert the needle pointed probe to the ECM coupler.
8) Measure the voltage between terminal D and ground.
# FP relay input 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?
• FP relay (ECM) malfunction.
• Red or R/B wire open or shorted, or poor termi-
nal D or E connection.
• If the wire and connection are OK. intermittent
YES trouble or faulty ECM.
• Recheck each terminal and wire harness fro
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.
1
1
ECM coupler (Harness side)
V