Part 2
5. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME)(a) Connect the Techstream to the DLC3.
(b) Put the engine in inspection mode Inspection Mode Procedure.
(c) Turn the Techstream ON.
(d) Warm up the engine.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume.
(f) Change the fuel injection volume using the Techstream, and monitor the voltage output of the Air-Fuel Ratio (A/F) and HO2 sensors displayed on the Techstream.
HINT
- Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed by 1% gradations within the range.
- The A/F sensor is displayed as AFS Voltage B1S1 or AFS Voltage B2S1, and the HO2 sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream.
Result
HINT
A normal HO2 sensor voltage (O2S B1 S2 or O2S B2 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or more than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning.
NG -- REPLACE AIR FUEL RATIO SENSOR
OK -- Continue to next step.
6. INSPECT AIR FUEL RATIO SENSOR
HINT
This A/F sensor test is to check the A/F sensor current during the fuel-cut. When the sensor is normal, the sensor current will indicate below 3 mA in this test.
(a) Clear DTC DTC Check / Clear.
(b) Turn the power switch on (READY).
(c) Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or more.
(d) Repeat the following drive pattern three times:
(1) Accelerate the vehicle to 80 km/h (50 mph) for 10 seconds or more.
(2) Move the shift lever to S3 range, and decelerate the vehicle for 4 seconds or more.
(e) Stop the vehicle.
(f) Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details.
(g) Confirm that RANGE B1S1 and RANGE B2S1 are either PASS or FAIL. If the Techstream shows incomplete, Re-check RANGE B1S1 and RANGE B2S1 after performing the drive pattern.
HINT
If the Techstream shown incomplete again, add the vehicle speed and use the second gear to decelerate the vehicle.
(h) Select RANGE B1S1 and press ENTER.
(i) Read the test value.
Standard current:
Less than 3.0 mA
NOTICE:
Do not turn the power switch off during this step because the test results will be lost.
NG -- REPLACE AIR FUEL RATIO SENSOR
OK -- REPLACE HEATED OXYGEN SENSOR
7. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG) and turn the Techstream ON.
(c) Put the engine in inspection mode Inspection Mode Procedure.
(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / All Data / O2S B1S2 or O2S B2S2.
(e) Change the fuel injection volume using the Techstream while monitoring the voltage output of the HO2 sensors displayed on the Techstream.
HINT
- Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed by 1% gradations within the range.
- The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
Standard:
Fluctuates between 0.4 V or less and 0.5 V or more.
NG -- INSPECT FOR EXHAUST GAS LEAK
OK -- Continue to next step.
8. PERFORM ACTIVE TEST USING TECHSTREAM (INJECTION VOLUME)
(a) Connect the Techstream to the DLC3.
(b) Put the engine in inspection mode Inspection Mode Procedure.
(c) Turn the Techstream ON.
(d) Warm up the engine.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume.
(f) Change the fuel injection volume using the Techstream, and monitor the voltage output of the Air-Fuel Ratio (A/F) and HO2 sensors displayed on the Techstream.
HINT
- Change the fuel injection volume within the range of -12% to +12%. The injection volume can be changed by 1% gradations within the range.
- The A/F sensor is displayed as AFS Voltage B1S1 or AFS Voltage B2S1, and the HO2 sensor is displayed as O2S B1S2 or O2S B2S2 on the Techstream.
Result
HINT
A normal HO2 sensor voltage (O2S B1 S2 or O2S B2 S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or more than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning.
NG -- REPLACE AIR FUEL RATIO SENSOR
OK -- CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO
9. INSPECT FOR EXHAUST GAS LEAK
(a) Inspect for exhaust gas leak.
OK:
No gas leakage.
NG -- REPAIR OR REPLACE EXHAUST GAS LEAK POINT
OK -- Continue to next step.
10. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) P0037
NG -- REPLACE HEATED OXYGEN SENSOR Removal
OK -- Continue to next step.
11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM)
(a) Disconnect the E62 or L49 HO2 sensor connector.
(b) Turn the power switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(d) Turn the power switch off.
(e) Disconnect the A13 and E1 ECM connectors.
(f) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):
Standard resistance (Check for short):
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, P0139, P0156, P0157, P0158 and P0159.
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 power switch on (READY).
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(e) Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158.
(f) 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, P0139, P0156, P0157, P0158 and P0159.
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 power switch on (READY).
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(e) Input DTCs: P0136, P0138, P0156, and P0158.
(f) Check the DTC Monitor is NORMAL. If DTC Monitor is INCOMPLETE, perform the driving pattern adding the vehicle speed.
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) Put the engine in inspection mode Inspection Mode Procedure.
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System / O2S B1S2 or O2S B2S2.
(e) Allow the engine to idle.
(f) Read the Heated Oxygen (HO2) 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 E62 or L49 HO2 sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE HEATED OXYGEN SENSOR Removal
OK -- Continue to next step.
20. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT)
(a) Turn the power switch off and wait for 5 minutes.
(b) Disconnect the A13 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
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) Turn the power switch on (READY).
(c) Warm up the engine until the engine coolant temperature is 75°C (167°F) or higher.
(d) Drive the vehicle at 70 to 120 km/h (45 to 75 mph) for at least 10 minutes or more.
(e) Stop the vehicle.
(f) Accelerate the vehicle to 80 km/h (50 mph) over a period of 10 seconds or more.
(g) Move the shift lever to S and select the S3 range, and allow the vehicle to decelerate for 7 seconds or more.
(h) Turn the Techstream ON.
(i) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(j) Input the DTCs: P0139 and P0159.
(k) Check that DTC Monitor is NORMAL. If DTC Monitor is INCOMPLETE, perform the driving pattern again but increase the vehicle speed.
Result
B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- REPLACE HEATED OXYGEN SENSOR Removal