W/Harness Inspection

Air Conditioner

Air Conditioner - B1250 Direction Potentiometer Short (High) - Driver - W/Harness Inspection

Terminal and 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?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) Go to "Signal Circuit Inspection" procedure

Signal Circuit Inspection

Check for short in harness
1. Ignition "OFF"
2. Disconnect DR Direction potentiometer
3. Measure resistance between terminal "6" and "7" of DR Direction potentiometer
A. Specification : Approx. Infinity Ohms




4. Is the measured resistance within specifications?
YES
1) Go to "Ground Circuit Inspection " procedure
NO
1) Check for short to power harness in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

Check for open in ground harness
1. Ignition "OFF"
2. Disconnect DR Direction Actuator.
3. Measure resistance between terminal "5" of DR Direction Actuator and chassis ground.
A. Specification : Approx. 0 Ohms




4. Is the measured resistance within specifications?
YES
1) Go to "Component Inspection " procedure.
NO
1) Check for open in ground harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.