With CONSULT

Front Heated Oxygen Sensors (P0130: Right Bank) (P0150: Left Bank)








COMPONENT DESCRIPTION
The front heated oxygen sensor is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The front heated oxygen sensor has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1 V in richer conditions to 0 V in leaner conditions. The front heated oxygen sensor signal is sent to the ECM. The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1 V to 0 V.






CONSULT REFERENCE VALUE IN DATA MONITOR MODE
Specification data are reference values.






ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values, and are measured between each terminal and (25) (ECCS ground).









ON BOARD DIAGNOSIS LOGIC
Under the condition in which the front heated oxygen sensor signal is not input, the ECM circuits will read a continuous approximately 0.3 V. Therefore, for this diagnosis, the time that output voltage is within 200 to 400 mV range is monitored, and the diagnosis checks that this time is not inordinately long.


DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

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:
Never raise engine speed above 3,600 rpm (A/T), 4,000 rpm (M/T) during the "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE". If the engine speed limit is exceeded, retry the procedure from step 2).

Always drive vehicle at a temperature of more than -10°C (14°F).

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.













With CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Stop engine and wait at least 5 seconds.
(3) Turn ignition switch "ON" and select "FR O2 SEN-B1 (-B2) P0130 (P0150)" of "FRONT O2 SENSOR" in "DTC WORK SUPPORT" mode with CONSULT.
(4) Touch "START".
(5) Start engine.
(6) When the following conditions are met, "TESTING" will be displayed on the CONSULT screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take approximately 10 to 60 seconds.)

CKPS-RPM (POS): 1,600 - 2,400 rpm
Vehicle speed: 70 - 100 km/h (43 - 62 MPH)
B/FUEL SCHDL: 1 - 5 ms
Selector lever: Suitable position

If "TESTING" is not displayed after 5 minutes, retry from step 2.

(7) Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to "DIAGNOSTIC PROCEDURE".

During this test, P1148 may be stored in ECM.







DIAGNOSTIC PROCEDURE






Electrical Diagrams/Left Bank






Circuit Connectors/Left Bank






Electrical Diagrams/Right Bank





Circuit Connectors/Right Bank


COMPONENT INSPECTION
Front heated oxygen sensor









With CONSULT
(1) Start engine and warm it up to normal operating temperature.
(2) Select "MANU TRIG" and "HI SPEED" in "DATA MONITOR" mode with CONSULT, and select "FR O2 SEN-B1 (-B2)" and "FR O2 MNTR-B1 (-B2)".
(3) Hold engine speed at 2,000 rpm under no load during the following steps.
(4) Touch "RECORD" on CONSULT screen.
(5) Check the following.

* "FR O2 MNTR-B1 (-B2)" in "DATA MONITOR" mode changes from "RICH" to "LEAN" to "RICH" 5 times in 10 seconds.
5 times (cycles) are counted as shown below:

Cycle | 1 | 2 | 3 | 4 | 5 |
FR O2 MNTR-B1 R-L-R-L-R-L-R-L-R-L-R

R = "FR O2 MNTR-B1 (-B2)", "RICH"
L = "FR O2 MNTR-B1 (-B2)", "LEAN"

* "FR O2 SEN-B1 (-B2)" voltage goes above 0.6 V at least once.
* "FR O2 SEN-B1 (-B2)" voltage goes below 0.35 V at least once.
* "FR O2 SEN-B1 (-B2)" voltage never exceeds 1.0 V.