Checking Wiring
-- Remove the Heated Oxygen Sensor (HO2S) -G39- / Oxygen Sensor Heater -Z19-. Refer to the service information for removal and installation procedures.
-- Using a multimeter, Check the Heated Oxygen Sensor (HO2S) -G39- / Oxygen Sensor Heater -Z19- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical connector T94 for an open circuit.
| Heated Oxygen Sensor (HO2S) -G39- / Oxygen Sensor Heater -Z19- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical connector T94 terminal |
|---|---|
| 1 | 77 |
| 2 | 56 |
| 3 | 73 |
| 5 | 55 |
| 6 | 78 |
Specified resistance 1.5 Ω max.
If the specification is Not obtained:
-- Check the wiring for high resistance, an open or short circuit to Battery or ground.
-- If necessary, repair the wiring or connection.
If the specification is obtained:
-- Replace the Engine Control Module (ECM) -J623-. Refer to the Repair Information.