2.
Measure resistance between terminals 3 and 4 of the sensor connector (Component side)
1)
Specification
Temp.(°C) | Temp.(°F) | Heater Resistance (Ω) |
18~20 | 64~82 | Approx. 9 |
Ignition "OFF"
Measure resistance between terminals 3 and 4 of the sensor connector (Component side)
Specification
Temp.(°C) | Temp.(°F) | Heater Resistance (Ω) |
18~20 | 64~82 | Approx. 9 |
Is resistance within the specification?
YES
▶ Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
▶ Check HO2S for contamination, deterioration, or damage. Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "Verification of Vehicle Repair" procedure
