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:
DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
NOTE: If "DIAGNOSTIC TROUBLE CODE 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 more than 10.5.
With Consult
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".
OR
With Generic Scan Tool
1. Start engine and run it for at least 6 seconds at idle speed.
2. Turn ignition switch "OFF" and wait at least 5 seconds.
3. Restart engine and run it for at least 6 seconds at idle speed.
4. Select "MODE 3" with GST.
5. If DTC is detected, go to "DIAGNOSTIC PROCEDURE".
- When using GST, "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" should be performed twice as much as when using CONSULT-II because GST cannot display MODE 7 (1st trip DTC) concerning this diagnosis. Therefore, using CONSULT-II is recommended.
EC-FO2H-L-01:
EC-FO2H-L-01 Connector View:
WIRING DIAGRAM
Fuse Block - Junction Block (J/B) Terminal Arrangement (B1, B2, E61, E62, E63, E64, M1):
DIAGNOSTIC PROCEDURE
COMPONENT INSPECTION
Heated oxygen sensor 1 heater (front)
Check resistance between terminals (3) and (1).
Resistance: 2.3 - 4.3 ohm 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.