FI SYSTEM DIAGNOSIS 4-89
Step 6
1) Turn the ignition switch OFF.
2) Disconnect the motor lead wire coupler of the EXCVA.
3) Apply 12 volts to the terminal and check the operation of
EXCVA.
4) Then, swap the wires supplied 12 volts and check the opera-
tion of EXCVA.
(Check the operation of EXCVA both way.)
Is the operation OK?
5) After repairing the trouble, clear the DTC using SDS tool.
(4-27)
6
6
12 V
6
12 V
YES
• Loose or poor contacts on the EXCVA or ECM
coupler (terminal 3 or 4)
• Open or short circuit in the B/R wire or R/B wire
• 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 EXCVA with a new one.
• Inspect that the EXCV and two cables move
smoothly. (6-14)
SAMPLE
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