Hyundai GENESIS COUPE BK 2010 Manual page 3322

Fig 1) Parameter of "INCAR TEMP.SENSOR" will be fixed at 25°C(77°F), if there is any fault in INCAR SENSOR.
4. Is the Incar temperature sensor normal ?
▶ Go to "Inspection and Repair" procedure.
▶ This is a intermittent problem caused by poor contact of component or Control Unit.
▶ Thoroughly check the looseness, poor connection, bent, corrison, contamination, deformation
or damage of connector.
▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.
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?
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
▶ Go to "W/Harness Inspection" procedure.
Signal Circuit Inspection
■ Check power in harness
1. Ignition "OFF".
2. Disconnect Incar temp.sensor and Connect A/C control unit main harness connector.
3. Ignition "ON".
4. Measure voltage between Power terminal of Incar temp.sensor harness connector and chassis ground.
Specification : 0V
5. Is the measured voltage within specification?
▶ Go to "Check for open in harness" as follows.
▶ Check for short to battery in harness.
▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
■ Check for open in harness
1. Ignition "OFF".
2. Disconnect Incar temp.sensor and A/C control unit main harness connector.
3. Measure resistance between Signal(+) terminal of Incar temp.sensor harness connector and Signal(+) terminal of
A/C-ECU harness connector.