Part 2

2GR-FE ENGINE CONTROL: SFI SYSTEM: P0136-P0139, P0156-P0159: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)


11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM)

(a) Disconnect the heated oxygen sensor connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





(d) Reconnect the heated oxygen sensor connector.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM)
OK -- Continue to next step.

12. REPLACE HEATED OXYGEN SENSOR

(a) Replace the heated oxygen sensor Removal.

NEXT -- Continue to next step.

13. PERFORM CONFIRMATION DRIVING PATTERN

(a) Refer to the confirmation driving pattern for P0136, P0137, P0138, P0156, P0157 and P0158.

NEXT -- Continue to next step.

14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158)

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

(d) Input DTC: P0136, P0137, P0138, P0156, P0157 or P0158.

(e) Check the DTC Monitor is NORMAL. If DTC Monitor is INCOMPLETE, perform the driving pattern adding the vehicle speed.

Result:





B -- REPLACE AIR FUEL RATIO SENSOR Removal

A -- END

15. REPLACE AIR FUEL RATIO SENSOR

(a) Replace the air fuel ratio sensor Removal.

NEXT -- Continue to next step.

16. PERFORM CONFIRMATION DRIVING PATTERN

(a) Refer to the confirmation driving pattern for P0136, P0137, P0138, P0156, P0157 and P0158.

NEXT -- Continue to next step.

17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0138, P0156 OR P0158)

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

(d) Input DTC: P0136, P0138, P0156 or P0158.

(e) Check the DTC judgment result.

Result:





B -- REPLACE HEATED OXYGEN SENSOR Removal

A -- END

18. INSPECT FOR EXHAUST GAS LEAK

(a) Inspect for exhaust gas leaks from the exhaust manifold sub-assembly and exhaust pipes.

OK:

No gas leaks.

NG -- REPAIR OR REPLACE EXHAUST GAS LEAK POINT
OK -- Continue to next step.

19. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT)

(a) Turn the ignition switch off and wait for 5 minutes.





(b) Disconnect the ECM connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





(d) Reconnect the ECM connectors.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (HEATED OXYGEN SENSOR - ECM)
OK -- Continue to next step.

20. PERFORM CONFIRMATION DRIVING PATTERN

(a) Refer to the Confirmation Driving Pattern for P0139 or P0159.

NEXT -- Continue to next step.

21. CHECK WHETHER DTC OUTPUT RECURS (DTC P0139 OR P0159)

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Enter the following menus: Powertrain / Engine / Utility / All Readiness.

(d) Input DTC: P0139 or P0159.

Result:





B -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems

A -- REPLACE HEATED OXYGEN SENSOR Removal