Component Inspection

Component Inspection

1. Check resistance of OTS
(1) IG "ON" & ENG "OFF"
(2) Monitor Oil Temperature parameter on the scantool
(3) IG "OFF" & ENG "OFF"
(4) Disconnect OTS connector.
(5) Measure resistance between terminal 1 and 2 of OTS connector (Component Side)
A. Specification :









(6) Is the measured resistance within specification?
YES
- Go to "Check ECM" as follows.
NO
- Substitute with a known-good OTS and check for proper operation. If the problem is corrected, replace OTS and go to "Verification of Vehicle Repair" procedure.
2. Check ECM
(1) Ignition "OFF" and Connect Scantool
(2) Ignition "ON" & Engine "OFF"
(3) Select simulation function on scantool.
(4) Simulate voltage at terminal "1" of OTS signal harness connector.




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

CAUTION:
There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by ECM. After testing ECM on the vehicle, use this function to reuse the ECM on the others