4-44 FI SYSTEM DIAGNOSIS
– Between each of B/Bl and B/Br wire and ground: infinity
– Between B/Bl wire terminal and B/Br wire at ECT sensor
coupler: infinity
• Voltage
09900-25008: Multi circuit tester set
Tester knob indication: Voltage (
)
– Between B/Bl wire or B/Br wire and ground: approx. 0 V
(When ignition switch is ON)
Is check result OK?
2
2
YES
Replace the ECM with a known good one, and
inspect it again.
NO
Repair or replace the defective wire harness.
V
2
