Test Procedure
- Turn ignition off. Disconnect IFS 4-pin harness connector. See Fig 1
. Turn ignition on. Measure voltage between ground and IFS connector terminal No. 4 (Pink wire). Voltage should be battery voltage. If voltage is as specified, go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to step 5
.
- With ignition on. Measure voltage between ground and IFS connector terminal No. 2 (Yellow/Red wire). Voltage should be approximately 5 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to step 5
.
- Turn ignition off. Measure resistance between ground and IFS connector terminal No. 1 (Black wire). Resistance should be below one ohm. If resistance is as specified, go to next step. If resistance is not as specified, repair open circuit as necessary and go to step 5
.
- Thoroughly check IFS for loose, bent or corroded connector terminals, repair if necessary. Reconnect IFS and turn ignition on. Backprobe and measure voltage between ground and IFS connector terminal No. 3 (Black/White wire). Voltage should be battery voltage. If voltage is as specified, temporarily install a known good IFS and check for proper operation. If problem is corrected, replace IFS and go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to next step.
- After repair, return vehicle to original condition. Clear codes using Hi-Scan Pro/Kia Data Pro Scan tool or equivalent. Verify repairs by driving vehicle and monitoring for pending codes. If DTC is set during test drive, follow appropriate DTC test procedure.
Courtesy of KIA MOTORS AMERICA, INC.