1.
Check resistance
(1)
IG "OFF".
(2)
Disconnect HO2S(S1) connector.
(3)
Measure resistance between terminal 3 and 4 of HO2S(S1)(Component Side)
a.
Specificaion :
ITEM | Specification |
Heater Resistance(Ω) | Approx. 9.0Ω(20℃) |
(4)
Is the measured resistance within specification ?
YES
a.
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.
NO
a.
Substitute with a known - good HO2S(S1) and check for proper operation.
If the problem is corrected, replace HO2S(S1) and go to "Verification of Vehicle Repair" procedure.
