W/Harness Inspection

Ground Circuit inspection

1. Ignition "OFF"
2. Disconnect IATS connector
3. Measure resistance between terminals 1 of the sensor harness connector and chassis ground
A. Specification: Approx. 0 Ohm




4. Is resistance within the specification ?
YES
1) Go to next step as below
NO
1) Repair open circuit and go to "Verification of Vehicle Repair" procedure

Signal Circuit Inspection

1. Ignition "ON" & Engine "OFF"
2. Measure voltage between terminals 5 of the sensor harness connector and chassis ground
A. Specification: Approx. 5V




3. Is voltage within the specification ?
YES
1) Go to next step as below
NO
1) Check for open or short to battery in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) 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 ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to Component Inspection