Component Inspection

Component Inspection

1. Check HO2S (B1/S1) Heater resistance.
(1) IG "OFF" and disconnect HO2S (B1/S1) connector.
(2) Measure resistance between terminal 1 and 2 of HO2S (B1/S1)connector (Component Side)
A. Specification :









(3) Is the measured resistance within specification ?
YES
1) 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 parts automatically detected and memorized by PCM.
- Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others.

NO
1) Substitute with a known-good HO2S (B1/S1) and check for proper operation. If the problem is corrected, replace HO2S (B1/S1) and go to "Verification of Vehicle Repair" procedure.