3.
Monitor ECV Control Duty when engine "ON" & idle, and Acceleration.
Fig.1) Normal ECV Duty on A/C "ON" and Engine Idle.
Fig.2) Normal ECV Duty on Engine Idle to Accleration.
Re-connect ECV connector.
Set-up the oscilloscope as mentioned below.
Channel A (+): ECV Power Terminal , Channel A (-) : Chassis Ground
Monitor ECV Control Duty when engine "ON" & idle, and Acceleration.
Fig.1) Normal ECV Duty on A/C "ON" and Engine Idle.
Fig.2) Normal ECV Duty on Engine Idle to Accleration.
Is measured value within specification?
 | ▶ Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Substitute with known-good ECV and then check for proper operation. If problem is corrected, replace ECV and then go to "Verification of Vehicle Repair" procedure. ▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. |
