P0130
P0130 (Bank 1), P0150 (Bank 2) HO(2)S(1) (Circuit)
COMPONENT DESCRIPTION
The heated oxygen sensor 1 is placed into the front tube. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 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 heated oxygen sensor 1 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 1V to 0 V.
Consult-II Reference Value In Data Monitor Mode:
On Board Diagnosis Logic
Under the condition in which the heated oxygen sensor 1 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 m V range is monitored, and the diagnosis checks that this time is not inordinately long.
Malfunction is detected when the voltage from the sensor is constantly approx. 0.3 V.
Possible Cause
- Harness or connectors
(The sensor circuit is open or shorted.)
- Heated oxygen sensor 1
DTC Confirmation Procedure
CAUTION: Always drive vehicle at a safe speed.
NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and wait at least 10 seconds before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select "HO(2)S(1) (B1) P0130" or "HO(2)S(1) (B2) P0150" of "HO(2)S(1)" in "DTC WORK SUPPORT" mode with CONSULT-II.
3. Touch "START".
4. Let it idle for at least 3 minutes.
NOTE: Never raise engine speed above 3,600 rpm after this step. If the engine speed limit is exceeded, return to step 4.
5. When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen. Maintain the conditions continuously until "TESTING" changes to "COMPLETED". (It will take approximately 10 to 60 seconds.)
If "TESTING" is not displayed after 5 minutes, retry from step 2.
6. Make sure that "OK" is displayed after touching "SELF-DIAG RESULTS". If "NG" is displayed, refer to "Diagnostic Procedure".
During this test, P1148 and P1168 may be stored in ECM.
Overall Function Check
Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.
With GST
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 114 [HO(2)S(1) (B1) signal] or 115 [HO(2)S(1) (B2) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm constant under no load.
- The voltage does not remain in the range of 0.2 - 0.4 V.
4. If NG, go to "Diagnostic Procedure".
Wiring Diagram
BANK 1
EC-O2S1B2-01:
BANK 2
Step 1 - 2:
Step 3 - 5:
Diagnostic Procedure
Component Inspection
HEATED OXYGEN SENSOR 1
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select "MANU TRIG" and adjust "TRIGGER POINT" to 100% in "DATA MONITOR" mode with CONSULT-II.
3. Select "HO(2)S(1) (B1)/(B2)" and "HO(2)S(1) MNTR (B1)/(B2)".
4. Hold engine speed at 2,000 rpm under no load during the following steps.
5. Touch "RECORD" on CONSULT-II screen.
6. Check the following.
- "HO(2)S(1) 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 at right.
- "HO(2)S(1) (B1)/(B2)" voltage goes above 0.6 V at least once.
- "HO(2)S(1) (B1)/(B2)" voltage goes below 0.3 V at least once.
- "HO(2)S(1) (B1)/(B2)" voltage never exceeds 1.0 V.
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 heated oxygen sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 114 [HO(2)S(1) (B1) signal] or 115 [HO(2)S(1) (B2) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm constant under no load.
- The voltage fluctuates between 0 to 0.3 V and 0.6 to 1.0 V more than 5 times within 10 seconds.
- The maximum voltage is over 0.6 V at least one time.
- The minimum voltage is below 0.3 V at least one time.
- The voltage never exceeds 1.0 V.
1 time: 0 - 0.3V -> 0.6 - 1.0V -> 0 - 0.3 V
2 times: 0 - 0.3V -> 0.6 - 1.0V -> 0 - 0.3V -> 0.6 - 1.0 V
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 heated oxygen sensor, clean exhaust system threads using Heated Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Removal and Installation
HEATED OXYGEN SENSOR 1
Refer to "EXHAUST MANIFOLD AND THREE WAY CATALYST".