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
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 increasing 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, P0158 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. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / A/F Control System / O2S B1S2 or O2S B2S2.
(e) Allow the engine to idle.
(f) Read the heated oxygen sensor output voltage while idling.
Result
B -- READ DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN)
A -- Continue to next step.
19. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT)
(a) Disconnect the heated oxygen sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for Bank 1:
for Bank 2:
Text in Illustration
(c) Reconnect the heated oxygen sensor connector.
NG -- REPLACE HEATED OXYGEN SENSOR Removal
OK -- Continue to next step.
20. 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 (Check for Short):
(d) Reconnect the ECM connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE ECM Removal
21. READ DTC OUTPUT (DTC P0139 OR P0159 IS OUTPUT AGAIN)
(a) Connect the Techstream to the DLC3.
(b) Clear the DTCs.
(c) Start the engine. [A]
(d) Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or more. [B]
(e) Drive the vehicle 60 km/h (38 mph) and decelerate the vehicle for 7 seconds or more. [C]
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
(f) Turn the Techstream ON.
(g) Enter the following menus: Powertrain / Engine / Utility / All Readiness. [D]
(h) Input DTCs: P0139 or P0159.
(i) Check the DTC monitor is NORMAL. If DTC monitor is INCOMPLETE, perform the drive pattern increasing the vehicle speed and using the second gear to decelerate the vehicle.
Result
B -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems
A -- REPLACE HEATED OXYGEN SENSOR Removal