4-62 FI SYSTEM DIAGNOSIS
Is the voltage OK?
"
5) After repairing the trouble, clear the DTC using SDS tool.
(#4-26)
YES
• Bl wire or B wire open or shorted to ground, or
poor

E or

J connection.
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• 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 Replace the HO2 sensor with a new one.
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.
2
ECM coupler (Harness side)
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