Signal Circuit Inspection

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

Ignition "OFF" & Disconnect Alternator connector.
Ignition "ON"
Measure voltage between Pin No. 1 (COM) terminal of Alternator harness connector and chassis ground.
Measure voltage between Pin No. 3 (FR) terminal of Alternator harness connector and chassis ground.

Specification:

FR - Approx 12V

COM - Approx 2.65V (PWM Signal)

Fig 1: Screen Display - Oscilloscope
Courtesy of KIA MOTORS AMERICA, INC.
Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.