MIC-In Circuit Inspection

WARNING: This page is about a different car, the 2016 Hyundai Genesis and 2015 Hyundai Genesis. However, it is still accessible from the selected car via links, so may be relevant.

■ Check for open in harness

Ignition "OFF"
Disconnect MIC and I-BOX Module main harness connector.
Measure resistance between MIC-In (+), (-) terminal of MIC harness connector and MIC-In (+), (-) terminal of I-BOX Module harness connector.
Specification: Below 1Ω

Refer to appropriate SYSTEM WIRING DIAGRAM article
Is the measured value within specification?
YES
- Go to next procedure.
NO
- Check for short in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check short to ground in harness

Ignition "OFF".
Disconnect MIC and I-BOX Module main harness connector.
Measure resistance between MIC-In (+), (-) terminal of I-BOX Module harness connector and chassis ground.
Specification: Infinity

Refer to appropriate SYSTEM WIRING DIAGRAM article
Is the measured value within specification?
YES
- Go to next procedure.
NO
- Check for short in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check short to battery in harness

Ignition "OFF".
Disconnect MIC and I-BOX Module main harness connector.
Ignition "ON".
Measure voltage between MIC-In (+), (-) terminal of I-BOX Module harness connector and chassis ground.
Specification: Approx. 0V

Refer to appropriate SYSTEM WIRING DIAGRAM article
Is the measured value within specification?
YES
- Check I-BOX, MIC connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Substitute with a known-good MIC and check for proper operation. If the problem is corrected, replace MIC and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for short in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.