W/Harness Inspection

P1506 Idle Speed Control Actuator Signal High of Coil #1

Inspection/Repair - W/Harness Inspection

Terminal & Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminals.
Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Control Circuit Inspection

Check Open or short in control circuit
1. IG KEY "OFF".
2. Disconnect ISCA connector.
3. IG KEY "ON" & ENG "OFF"
4. Measure the voltage between ISCA opening control terminal of ISCA harness connector and chassis ground.

Specification : Approx 2.2 V




5. Is the measured voltage within specification?