Component Inspection

Component Inspection

1. Check IATS
(1) IG "OFF" and disconnect IATS connector.
(2) Measure resistance between terminals 4 and 5 of IATS connector. (Component side)
A. Specification :









(3) Is the measured resistance within specification ?
YES
- Go to "Check PCM" as follows.
NO
- Substitute with a known - good IATS and check for proper operation. If the problem is corrected, replace IATS and go to "Verification of Vehicle Repair" procedure.
2. Check PCM
(1) IG "OFF" and connect scantool.
(2) Disconnect IATS connector and connect probe to terminal 4 of IATS harness connector.
(3) IG "ON" and ENG "OFF" and simulation Function on scantool.
(4) Simulate voltage at terminal 4 of IATS harness connector.




(5) Does the signal value of IATS change according to simulation voltage ?
YES
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.
NO
- Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "Verification of Vehicle Repair" procedure.

CAUTION:
There is a memory reset function on scantool that can erase optional components automatically detected and memorized by PCM.Before or after testing PCM on the vehicle, use this function to reuse the PCM.