P0135

System Description
The ECM performs ON/OFF control of the heated oxygen sensor 1 heater (front) corresponding to the engine speed.

Operation:

Consult-II Reference Value In Data Monitor Mode:

ECM Terminals And Reference Value:

On Board Diagnosis Logic:

DTC Confirmation Procedure

NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is between 10.5 V and 16 V at idle.

With CONSULT-II
1. Turn ignition switch "ON" and select "DATA MONITOR" mode with CONSULT-II.




2. Start engine and run it for at least 6 seconds at idle speed.
3. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.

With GST
- Follow the procedure "With CONSULT-II".

EC-HO2S1H-01:

EC-HO2S1H-01 Connector View:

Wiring Diagram

Super Multiple Junction Terminal Arrangements:

Steps 1 - 2:

Steps 3 - 6:

Diagnostic Procedure

Component Inspection




HEATED OXYGEN SENSOR 1 HEATER (FRONT)
Check resistance between terminals 3 and 1
Resistance: 2.3 - 4.3ohm at 25 °C (77 °F)
Check continuity between terminals 2 and 1, 3 and 2. Continuity should not exist.
If NG, replace the heated oxygen sensor 1 (front).

CAUTION
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.