Control Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check for Open in Harness

Ignition "OFF"
Disconnect Driver Air Mix Actuator and A/C control unit main harness connector.
Measure resistance between WARM Terminal of Driver air mix actuator harness connector and WARM Terminal of A/C-ECU harness connector.
Measure resistance between COOL Terminal of Driver air mix actuator harness connector and COOL Terminal of A/C-ECU harness connector.
Specification: below 1

Fig 1: Measuring Resistance Between COOL Terminal Of Driver Air Mix Actuator And Cool Terminal Of A/C-ECU Harness Connectors
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured resistance within specification?
YES
- Go to "Check Short to Ground in Harness " as follows.
NO
- Check for open in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check Short to Ground in Harness

Ignition "OFF"
Disconnect Driver Air Mix Actuator and A/C control unit main harness connector.
Measure resistance between WARM Terminal of Driver air mix actuator harness connector and chassis ground.
Measure resistance between COOL Terminal of Driver air mix actuator harness connector and chassis ground.
Specification : Infinity

Fig 2: Driver Temperature Actuator Circuit Diagram
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Check for short to ground in control harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.