Engine Control System (3ur-fe) (diagnostic Codes (p0010 - p0415)) Toyota Land Cruiser 200 рестайлинг

DESCRIPTION

1. This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and store the DTC.
2. The VVT (variable valve timing) system adjusts the intake valve timing to improve the driveability. The engine oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.

Scheme 250

HINT

This DTC relates to the Camshaft Oil Control Valve (OCV).

MONITOR DESCRIPTION

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and store the DTC.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

Scheme 251

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on.
6. Wait 5 seconds [A].
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P0010 or P0020.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 252

INSPECTION PROCEDURE

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 253

Scheme 254

1. CHECK DTC Clear DTC after recording the freeze frame data and DTC. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Allow the engine to idle and check DTC. Check that P0010 or P0020 is not output. OK P0010 or P0020 is not output. NG --> See step 2 OK --> See step 4
2. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Disconnect the camshaft oil control valve (OCV) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the OCV connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C24-1 - C53-58 (OC1+) Always Below 1 ohms C25-1 - C53-52 (OC2+) Always Below 1 ohms C24-2 - C53-57 (OC1-) Always Below 1 ohms C25-2 - C53-51 (OC2-) Always Below 1 ohms C24-1 or C53-58 (OC1+) - Body ground Always 10 kohms or higher C25-1 or C53-52 (OC2+) - Body ground Always 10 kohms or higher C24-2 or C53-57 (OC1-) - Body ground Always 10 kohms or higher C25-2 or C53-51 (OC2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
5. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The VVT system includes the ECM, Camshaft Oil Control Valve (OCV) and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV based on the signals transmitted by several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM.

1. The ECM optimizes the intake valve timing using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the ECM, Camshaft Oil Control Valve (OCV) and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.
2. If the difference between the target and actual intake valve timings is large, and changes in the actual intake valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and stores DTC(s).

1. DTC P0011 and P0021 (Advanced Cam Timing) are subject to 1 trip detection logic.
2. DTC P0012 and P0022 (Retarded Cam Timing) are subject to 2 trip detection logic.
3. These DTCs indicate that the VVT controller cannot operate properly due to OCV malfunctions or the presence of foreign objects in the OCV. Example: A DTC is stored when the following conditions 1 and 2 are met: 1. It takes 5 seconds or more to change the valve timing by 5°CA. 2. After the above condition 1 is met, the camshaft oil control valve is forcibly activated for 10 seconds.

ADVANCED CAMSHAFT TIMING

RETARDED CAMSHAFT TIMING

1. If the difference between the target and actual camshaft timings is more than the specified value, the ECM operates the VVT actuator.
2. Then, the ECM monitors the camshaft timing change for 10 seconds.

MONITOR RESULT

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Scheme 255

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
7. Drive the vehicle at approximately 60 km/h (37 mph) for 10 minutes or more [C]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
8. Idle the engine for 3 minutes or more [D].
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
10. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0011, P0012, P0021 or P0022.
13. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].
14. Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) and then decelerating the vehicle 10 to 15 times [F]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Depress the accelerator pedal by a large amount.
15. Idle the engine for 3 minutes or more [G].
16. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
17. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
18. Check the DTC judgment result again. HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
19. Perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0010. Refer to WIRING DIAGRAM .

HINT

1. DTC P0011, P0012, P0021 or P0022 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. Foreign objects are filtered out by the oil filter.

HINT

1. If DTC P0011 or P0012 is output, check the left bank VVT system for intake side circuit (for Bank 1).
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. If DTC P0021 or P0022 is output, check the right bank VVT system for intake side circuit (for Bank 2).
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 256

Scheme 257

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0011, P0012, P0021 or P0022 is output A P0011, P0012, P0021 or P0022 and other DTCs are output B HINT: If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first. B --> See step 10 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2). Check the engine speed while operating the Camshaft Oil Control Valve (OCV) using the Techstream. OK Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1, VVT OCV Duty #2 and VVT Change Angle #2]. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) . NG --> See step 4 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine and warm it up. Refer to the confirmation driving pattern. Read the output pending DTCs using the Techstream. OK No pending DTC output. NG --> See step 4 OK --> See step 9
4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING CHAIN) Remove the cylinder head cover LH and RH. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover. Check that the timing marks of the camshaft timing gears and camshaft timing exhaust gears are at the positions shown in the illustration. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. NG --> See step 11 OK: Go to next step
5. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Remove the OCV. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Check the valve operation. OK Measurement Condition Specified Condition No battery voltage applied to terminals 1 and 2 --> Battery voltage applied to terminals 1 and 2 Valve moves quickly NG --> See step 12 OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER Remove the OCV filter. Refer to «DISASSEMBLY»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . Check that the filter is not clogged. OK Filter is not clogged. NG --> CLEAN OIL CONTROL VALVE FILTER OK: Go to next step
7. REPLACE INTAKE CAMSHAFT TIMING GEAR Replace the intake camshaft timing gear. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine and warm it up. Refer to the confirmation driving pattern. Read the output pending DTCs using the Techstream. OK No pending DTC is output. HINT: DTC P0011, P0012, P0021 or P0022 is output when foreign objects in the engine oil are caught in some parts of the system. These codes will stay stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. NG --> See step 13 OK --> SYSTEM OK
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
10. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
11. ADJUST VALVE TIMING. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
12. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
13. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

1. This DTC is designed to detect opens or shorts in the Camshaft Oil Control Valve (OCV) circuit. If the OCV duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and store the DTC.
2. The VVT (variable valve timing) system adjusts the intake valve timing to improve the driveability. The engine oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 12 volts to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.

Scheme 258

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and store the DTC.

CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on.
6. Wait 5 seconds [A].
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P0013 or P0023.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 259

HINT

1. If DTC P0013 is output, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. If DTC P0023 is output, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 260

1. CHECK DTC (DTC P0013 OR P0023) Connect the Techstream to the DLC3. Clear DTC after recording the freeze frame data and DTC. Turn the engine switch off. Allow the engine to idle and check DTC. Check that P0013 or P0023 is not output. OK P0013 or P0023 is not output. NG --> See step 2 OK --> See step 4
2. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY Disconnect the OCV connector. Remove the camshaft oil control valve (OCV). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (OCV - ECM) Disconnect the OCV connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C26-1 - C53-56 (OE1+) Always Below 1 ohms C26-2 - C53-55 (OE1-) Always Below 1 ohms C27-1 - C53-50 (OE2+) Always Below 1 ohms C27-2 - C53-49 (OE2-) Always Below 1 ohms C26-1 or C53-56 (OE1+) - Body ground Always 10 kohms or higher C26-2 or C53-55 (OE1-) - Body ground Always 10 kohms or higher C27-1 or C53-50 (OE2+) - Body ground Always 10 kohms or higher C27-2 or C53-49 (OE2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
5. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

If DTC P0014, P0015, P0024 or P0025 is output, check the VVT (Variable Valve Timing) system.

The Variable Valve Timing (VVT) system includes the ECM, OCV and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV based on the signals transmitted by several sensors. The VVT controller regulates the exhaust camshaft angle using oil pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target exhaust valve timing is verified by the ECM.

1. The ECM optimizes the exhaust valve timing using the VVT (Variable Valve Timing) system to control the exhaust camshaft. The VVT system includes the ECM, Camshaft Oil Control Valve (OCV) and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the exhaust camshaft.
2. If the difference between the target and actual exhaust valve timing is large, and changes in actual exhaust valve timing are small, the ECM interprets this as the VVT controller stuck malfunction and stores DTC(s).

1. DTCs P0014 and P0024 (Advanced Cam Timing) are subject to 2 trip detection logic.
2. DTCs P0015 and P0025 (Retarded Cam Timing) are subject to 1 trip detection logic. These DTCs indicate that the VVT controller cannot operate properly due to OCV malfunctions or the presence of foreign objects in the OCV. Example: A DTC is stored when the following conditions 1 and 2 are met: 1. It takes 5 seconds or more to change the valve timing by 5°CA. 2. After the above condition 1 is met, the camshaft oil control valve is forcibly activated for 10 seconds.

ADVANCED CAMSHAFT TIMING

RETARDED CAMSHAFT TIMING

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
7. Drive the vehicle at approximately 60 km/h (37 mph) for 10 minutes or more [C]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
8. Idle the engine for 3 minutes or more [D].
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
10. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0014, P0015, P0024 or P0025.
13. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].
14. Repeat the pattern of accelerating the vehicle from rest to approximately 60 km/h (37 mph) and then decelerating the vehicle 10 to 15 times [F]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Depress the accelerator pedal by a large amount.
15. Idle the engine for 3 minutes or more [G].
16. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
17. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
18. Check the DTC judgment result again. HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform the following procedure.
19. Perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0013. Refer to WIRING DIAGRAM .

HINT

1. If DTC P0014 or P0015 is output, check the bank 1 VVT system for exhaust side circuit.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. If DTC P0024 or P0025 is output, check the bank 2 VVT system for exhaust side circuit.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 261

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014, P0015, P0024 OR P0025) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0014, P0015, P0024 or P0025 A P0014, P0015, P0024 or P0025 and other DTCs B HINT: If any DTCs other than P0014, P0015, P0024 or P0025 are output, troubleshoot those DTCs first. B --> See step 9 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2). Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream. OK Operation Specified Condition 0% Normal engine speed 100% Engine idles roughly or stalls HINT: Refer to "Data List / Active Test" [VVT Ex OCV Duty #1, VVT Ex Chg Angle #1, VVT Ex OCV Duty #2 and VVT Ex Chg Angle #2]. Refer to «DATA LIST / ACTIVE TEST»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__data-list-active-test) . NG --> See step 4 OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014, P0015, P0024 OR P0025) Connect the Techstream to the DLC3. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Warm up the engine. Refer to the confirmation driving pattern. Read the output pending DTCs using the Techstream. OK No pending DTC output. NG --> See step 4 OK --> See step 10
4. CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN) Remove the cylinder head cover LH and RH. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover. Check that the timing marks of the camshaft timing gears and camshaft timing exhaust gears are at the positions shown in the illustration. OK Timing marks on camshaft timing gears are aligned as shown in the illustration. NG --> See step 11 OK: Go to next step
5. INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY (OCV FOR EXHAUST CAMSHAFT) Remove the OCV. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 - 2 20°C (68°F) 6.9 to 7.9 ohms Check the valve operation. OK Measurement Condition Specified Condition No battery voltage applied to terminals 1 and 2 --> Battery voltage applied to terminals 1 and 2 Valve moves quickly NG --> See step 12 OK: Go to next step
6. INSPECT OIL CONTROL VALVE FILTER Remove the oil control valve filter. Refer to «DISASSEMBLY»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . Check that the filter is not clogged. OK Filter is not clogged. NG --> CLEAN OIL CONTROL VALVE FILTER OK: Go to next step
7. REPLACE CAMSHAFT TIMING EXHAUST GEAR Replace the camshaft timing exhaust gear. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NEXT: Go to next step
8. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Warm up the engine. Refer to the confirmation driving pattern. Read the output pending DTCs using the Techstream. OK No pending DTC output. HINT: DTC P0014, P0015, P0024 or P0025 is output when foreign objects in the engine oil are caught in some parts of the system. These codes will stay stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem. NG --> See step 13 OK --> SYSTEM IS OK
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
10. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
11. ADJUST VALVE TIMING. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
12. REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)
13. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

In the VVT (Variable Valve Timing) system, the appropriate intake and exhaust valve open and close timing is controlled by the ECM. The ECM performs intake and exhaust valve control by performing the following: 1) controlling the camshaft and camshaft oil control valve, and operating the camshaft timing gear; and 2) changing the relative positions of the camshaft and crankshaft.

To monitor the correlation of the intake camshaft position and crankshaft position, the ECM checks the VVT learning value while the engine is idling. The VVT learning value is calibrated based on the camshaft position and crankshaft position. The intake valve timing is set to the most retarded angle while the engine is idling. If the VVT learning value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores DTC P0016 (Bank 1) or P0018 (Bank 2).

To monitor the correlation of the exhaust camshaft position and crankshaft position, the ECM checks the VVT learning value while the engine is idling. The VVT learning value is calibrated based on the camshaft position and crankshaft position. The exhaust valve timing is set to the most advanced angle while the engine is idling. If the VVT learning value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores DTC P0017 (Bank 1) or P0019 (Bank 2).

P0016 AND P0018

P0017 AND P0019

INTAKE SIDE

EXHAUST SIDE

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

Scheme 262

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
7. Idle the engine for 5 minutes or more [C].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0016, P0017, P0018 or P0019.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [E] through [G].
13. Drive the vehicle for 2 to 3 minutes [E]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
14. Idle the engine for 5 minutes or more [F].
15. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [G].
16. Read the Pending DTCs [G]. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
17. Check the DTC judgment result.
18. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0335. Refer to WIRING DIAGRAM .

Refer to DTC P0340. Refer to WIRING DIAGRAM .

Refer to DTC P0365. Refer to WIRING DIAGRAM .

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016, P0017, P0018 OR P0019) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0016, P0017, P0018 or P0019 is output A P0016, P0017, P0018 or P0019 and other DTCs are output B B --> See step 7 A: Go to next step
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV) HINT: If the VVT system can be operated through the Active Test, it can be assumed that the VVT system is operating normally. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2) or Control the VVT Exhaust Linear (Bank 1) or Control the Exhaust VVT Linear (Bank 2) / All Data / VVT Change Angle #1, VVT Change Angle #2, VVT Ex Chg Angle #1, VVT Ex Chg Angle #2. Perform the Active Test. Check that the displacement angle varies. OK Displacement angle varies. NG --> See step 4 OK: Go to next step
3. ADJUST VALVE TIMING Adjust the valve timing. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NEXT --> See step 6
4. INSPECT CAMSHAFT OIL CONTROL VALVE (FOR INTAKE SIDE OR EXHAUST SIDE) See step 5 NG --> See step 8 OK: Go to next step
5. REPLACE CAMSHAFT TIMING GEAR OR CAMSHAFT TIMING EXHAUST GEAR Replace the camshaft timing gear. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . Replace the camshaft timing exhaust gear. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NEXT: Go to next step
6. CONFIRM WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine and warm it up. Refer to the confirmation driving pattern. Read the output pending DTCs using the Techstream. OK No pending DTC is output. NG --> See step 9 OK --> END
7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
8. REPLACE CAMSHAFT OIL CONTROL VALVE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information__removal)
9. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)

Refer to DTC P2195. Refer to DESCRIPTION .

HINT

Scheme 263

1. Although the DTC titles say oxygen sensor, these DTCs relate to the Air-Fuel Ratio (A/F) sensor.
2. Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC) and located near the engine assembly.
3. When one of these DTCs is stored, the ECM enters fail-safe mode. The ECM turns off the A/F sensor heater in fail-safe mode. Fail-safe mode continues until the engine switch is turned off.
4. The ECM provides a pulse width modulated control circuit to adjust the current through the heater. The A/F sensor heater circuit uses a relay on the +B side of the circuit.

The ECM uses information from the Air-Fuel Ratio (A/F) sensor to regulate the air-fuel ratio and keep it close to the stoichiometric level. This maximizes the ability of the Three-Way Catalytic Converter (TWC) to purify the exhaust gases.

The A/F sensor detects oxygen levels in the exhaust gas and transmits the information to the ECM. The inner surface of the sensor element is exposed to the outside air. The outer surface of the sensor element is exposed to the exhaust gas. The sensor element is made of platinum coated zirconia and includes an integrated heating element.

The zirconia element generates a small voltage when there is a large difference in the oxygen concentrations between the exhaust gas and outside air. The platinum coating amplifies this voltage generation.

The A/F sensor is more efficient when heated. When the exhaust gas temperature is low, the sensor cannot generate useful voltage signals without supplementary heating. The ECM regulates the supplementary heating using a duty-cycle approach to adjust the average current in the sensor heater element. If the heater current is outside the normal range, the signal transmitted by the A/F sensor becomes inaccurate. As a result, the ECM is unable to regulate the air-fuel ratio properly.

When the current in the A/F sensor heater is outside the normal operating range, the ECM interprets this as a malfunction in the sensor heater and stores DTC(s).

P0031 AND P0051

P0032 AND P0052

P101D AND P103D

P0031 AND P0051

P0032 AND P0052

P101D AND P103D

Scheme 264

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and idle it for 5 minutes or more [B].
7. With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 3000 RPM for 1 minute [C].
8. Idle the engine for 5 minutes or more [D].
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
10. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0031, P0032, P0051, P0052, P101D or P103D.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [E] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P2195. Refer to WIRING DIAGRAM .

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Change the fuel injection volume using the Control the Injection Volume function provided in the Active Test and monitor the air fuel ratio sensor output voltage. Refer to «INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415) . If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.
4. Sensor 1 refers to the sensor closest to the engine assembly.
5. Sensor 2 refers to the sensor farthest away from the engine assembly.
6. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 265

Scheme 266

Scheme 267

Scheme 268

Scheme 269

1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the Air-Fuel Ratio (A/F) sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher 1 (HA2A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA2A) - 4 (A2A-) Always 10 kohms or higher NG --> See step 8 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF A/F SENSOR) Disconnect the A/F sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C47-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C48-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V RESULT Result Proceed to NG A OK B B --> See step 5 A: Go to next step
3. INSPECT INTEGRATION RELAY (A/F) Remove the integration relay from the engine room relay block. Inspect the A/F fuse. Remove the A/F fuse from the integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition A/F fuse Always Below 1 ohms Reinstall the A/F fuse. Inspect the integration relay (A/F). Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1A-4 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1A-2 and 1A-3 Below 1 ohms NG --> REPLACE INTEGRATION RELAY (A/F) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - A/F SENSOR AND BODY GROUND) Disconnect the A/F sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-2 (+B) - 1A-4 Always Below 1 ohms C48-2 (+B) - 1A-4 Always Below 1 ohms 1A-2 - 1B-4 Always Below 1 ohms 1A-3 - Body ground Always Below 1 ohms C47-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher C48-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher 1A-2 or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 7
5. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the A/F sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-1 (HA1A) - C53-22 (HA1A) Always Below 1 ohms C48-1 (HA2A) - C53-20 (HA2A) Always Below 1 ohms C47-1 (HA1A) or C53-22 (HA1A) - Body ground Always 10 kohms or higher C48-1 (HA2A) or C53-20 (HA2A) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Read the output DTCs. RESULT Result Proceed to No DTC is output A P0031, P0032, P0051, P0052, P101D or P103D is output B B --> See step 10 A --> See step 9
7. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
8. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
10. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

1. Refer to DTC P0136. Refer to «DESCRIPTION»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415) .

HINT

Scheme 270

1. When any of these DTCs is stored, the ECM enters fail-safe mode. The ECM turns off the Heated Oxygen (HO2) Sensor heater in fail-safe mode. Fail-safe mode continues until the engine switch is turned off.
2. The ECM provides a pulse width modulated control circuit to adjust the current through the heater. The HO2 sensor heater circuit uses a relay on the +B side of the circuit.

The sensing portion of the Heated Oxygen (HO2) sensor has a zirconia element which is used to detect the oxygen concentration in the exhaust gas. If the zirconia element is at the appropriate temperature, and the difference between the oxygen concentrations surrounding the inside and outside surfaces of the sensor is large, the zirconia element generates voltage signals. In order to increase the oxygen concentration detecting capacity of the zirconia element, the ECM supplements the heat from the exhaust with heat from a heating element inside the sensor.

Heated oxygen sensor heater range check (P0037, P0038, P0057, P0058, P102D and P105D)

The ECM monitors the current applied to the heated oxygen sensor heater to check the heater for malfunctions. If the heater current is outside the normal range, the signal transmitted by the heated oxygen sensor becomes inaccurate. When the current in the heated oxygen sensor heater is outside the normal operating range, the ECM interprets this as a malfunction in the sensor and stores a DTC.

Heated oxygen sensor heater performance (P0141 and P0161)

After the accumulated heater ON time exceeds 100 seconds, the ECM calculates the heater resistance using the battery voltage and the current applied to the heater.

If the resistance is higher than the threshold value, the ECM determines that there is a malfunction in the HO2 sensor heater and stores DTC P0141 or P0161.

P0037 AND P0057 (CASE 1)

P0037 AND P0057 (CASE 2)

P0038 AND P0058

P0141 AND P0161

P102D AND P105D

P0037 AND P0057 (CASE 1)

P0037 AND P0057 (CASE 2)

P0038 AND P0058

P0141 AND P0161

P102D AND P105D

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and idle it for 5 minutes or more [B].
7. With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of 3000 RPM for 1 minute [C].
8. Idle the engine for 5 minutes or more [D].
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
10. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0037, P0038, P0057, P0058, P0141, P0161, P102D or P105D.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] through [E] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0136. Refer to WIRING DIAGRAM .

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 271

Scheme 272

Scheme 273

Scheme 274

1. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the heated oxygen (HO2) sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E1) Always 10 kohms or higher 1 (HT2B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT2B) - 4 (E1) Always 10 kohms or higher NG --> See step 10 OK: Go to next step
2. CHECK TERMINAL VOLTAGE (+B OF HO2 SENSOR) Disconnect the HO2 sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C17-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C18-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V RESULT Result Proceed to NG A OK B B --> See step 5 A: Go to next step
3. INSPECT INTEGRATION RELAY (EFI) Remove the integration relay from the engine room relay block. Inspect the EFI MAIN fuse. Remove the EFI MAIN fuse from the integration relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI MAIN fuse Always Below 1 ohms Reinstall the EFI MAIN fuse. Inspect the EFI relay. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1B-4 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1B-2 and 1B-3 Below 1 ohms NG --> REPLACE INTEGRATION RELAY (EFI) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (HO2 SENSOR - INTEGRATION RELAY) Check the EFI NO. 2 fuse. Remove the EFI NO. 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 ohms Reinstall the EFI NO. 2 fuse. Disconnect the HO2 sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-2 (+B) - 1B-4 Always Below 1 ohms C18-2 (+B) - 1B-4 Always Below 1 ohms C17-2 (+B) or 1B-4 - Body ground Always 10 kohms or higher C18-2 (+B) or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
5. CHECK HARNESS AND CONNECTOR (HO2 SENSOR - ECM) Disconnect the HO2 sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-1 (HT1B) - C53-45 (HT1B) Always Below 1 ohms C18-1 (HT2B) - C53-44 (HT2B) Always Below 1 ohms C17-1 (HT1B) or C53-45 (HT1B) - Body ground Always 10 kohms or higher C18-1 (HT2B) or C53-44 (HT2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Read the output pending DTCs. RESULT Result Proceed to No pending DTC is output A P0037, P0038, P0057, P0058, P0141, P0161, P102D and/or P105D are output B B --> See step 9 A --> See step 7
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
8. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Refer to DTC P0102. Refer to DESCRIPTION .

The MAF meter is a sensor that measures the amount of air flowing through the throttle valve. The ECM uses this information to determine the fuel injection time and to provide an appropriate air-fuel ratio. Inside the MAF meter, there is a heated platinum wire which is exposed to the flow of intake air. By applying a specific electrical current to the wire, the ECM heats it to a specific temperature. The flow of incoming air cools both the wire and an internal thermistor, affecting their resistance. To maintain a constant current value, the ECM varies the voltage applied to the wire and internal thermistor. The voltage level is proportional to the airflow through the sensor, and the ECM uses it to calculate the intake air volume.

The ECM monitors the average engine load value ratio to check the MAF meter for malfunctions. The average engine load value ratio is obtained by comparing the average engine load calculated from the MAF meter output to the average engine load estimated from the driving conditions, such as the engine speed and the throttle opening angle. If the average engine load value ratio is less than the threshold value, the ECM determines that the intake air volume is low, and if the average engine load value ratio is more than the threshold value, the ECM determines that the intake air volume is high.

If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is stored.

Scheme 275

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
5. Turn the engine switch off and wait for at least 30 seconds.
6. Turn the engine switch on (IG) and turn the Techstream on.
7. Start the engine and warm it up until the engine coolant temperature reaches 70°C (158°F) or higher [A].
8. Drive the vehicle at approximately 80 km/h (50 mph) to 112 km/h (70 mph) for 5 minutes or more [B]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Drive while keeping the engine load as stable as possible.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
10. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0101.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0102. Refer to WIRING DIAGRAM .

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0101 is output A P0101 and other DTCs are output B HINT: If any DTCs other than P0101 are output, troubleshoot those DTCs first. B --> See step 4 A: Go to next step
2. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
3. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 6 OK --> See step 5
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
5. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
6. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)

The Mass Air Flow (MAF) meter is a sensor that measures the amount of air flowing through the throttle valve.

The ECM uses this information to determine the fuel injection time and to provide the appropriate air-fuel ratio.

Inside the MAF meter, there is a heated platinum wire which is exposed to the flow of intake air.

By applying a specific electrical current to the wire, the ECM heats it to a given temperature. The flow of incoming air cools both the wire and an internal thermistor, affecting their resistance. To maintain a constant current value, the ECM varies the voltage applied to the wire and internal thermistor. The voltage level is proportional to the airflow through the sensor, and the ECM uses it to calculate the intake air volume.

The circuit is constructed so that the platinum hot wire and the cold film element create a bridge circuit, and the power transistor is controlled so that the potentials of A and B remain equal to maintain the predetermined temperature.

HINT

When any of these DTCs are stored, the ECM enters fail-safe mode. During fail-safe mode, the ignition timing is calculated by the ECM, according to the engine speed and throttle valve position. Fail-safe mode continues until a pass condition is detected.

Scheme 276

HINT

When any of these DTCs is output, check the air-flow rate by entering the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF.

If there is a defect in the MAF meter or an open or short circuit, the voltage level deviates from the normal operating range. The ECM interprets this deviation as a malfunction in the MAF meter and stores DTC(s).

Example

When the sensor output voltage remains at below 0.2 V, or higher than 4.9 V for more than 3 seconds, the ECM stores DTC(s).

If the malfunction is not repaired successfully, a DTC is stored 3 seconds after the engine is next started.

P0102

P0103

Scheme 277

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 5 seconds [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Run the engine at an engine speed of 4000 RPM or more for 5 seconds [D].
11. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
12. Read the pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
13. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
14. Input the DTC: P0102 or P0103.
15. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
16. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 278

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 279

Scheme 280

Scheme 281

Scheme 282

1. READ DTC OUTPUT Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTCs. RESULT Result Proceed to DTC P0102 is output A DTC P0103 is output B B --> See step 6 A: Go to next step
2. INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Disconnect the Mass Air Flow (MAF) meter connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C3-1 (+B) - Body ground Engine switch on (IG) 11 to 14 V NG --> See step 5 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT MASS AIR FLOW METER Inspect the mass air flow meter, referring to the On-vehicle Inspection for Mass Air Flow Meter. Refer to «ON-VEHICLE INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Inspect the mass air flow meter, referring to the Inspection for Mass Air Flow Meter. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Inspect the function of the mass air flow meter. Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF. Check that the mass air flow meter value changes when the engine is raced. OK The reading changes. NG --> See step 8 OK --> See step 9
5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - INTEGRATION RELAY) Check the EFI NO. 2 fuse. Remove the EFI NO. 2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 ohms Reinstall the EFI NO. 2 fuse. Disconnect the MAF meter connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-1 (+B) - 1B-4 Always Below 1 ohms C3-1 (+B) or 1B-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
6. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (SENSOR GROUND) Disconnect the MAF meter connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-2 (E2G) - Body ground Always Below 1 ohms NG --> See step 12 OK --> See step 11
8. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
11. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
12. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Scheme 283

1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes ( (Scheme 250)above).
2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability.

After warmed engine stop

The ECM monitors the intake air temperature variation in the period from when the engine was warmed up on the previous trip until the next engine start. If the change in engine coolant temperature sensor output is less than the threshold, it is determined that a malfunction has occurred in the intake air temperature sensor. When this is detected, the MIL is illuminated and the DTC is set.

After cold engine start

The monitor runs when the engine is started cold after 5 hours or more have elapsed since the engine stopped. If the intake air temperature sensor output variation until the engine has warmed up completely is less than the threshold, it is determined that a malfunction has occurred in the intake air temperature sensor. When this is detected in 2 consecutive driving cycles, the MIL is illuminated and the DTC is set.

ALL

AFTER ENGINE STOP

AFTER COLD ENGINE START

AFTER ENGINE STOP

AFTER COLD ENGINE START

Scheme 284

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
7. Idle the engine for 5 minutes or more [C]. HINT: During steps [A] through [C], if the change in the intake air temperature is less than 1°C (1.8°F), the intake air temperature sensor (MAF meter) is malfunctioning. It is not necessary to continue this procedure.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0111.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [E] and [F].
13. Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more [E]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
14. Check the DTC judgment result again [F]. HINT: If the judgment result shows INCOMPLETE or N/A, perform steps [E] and [F] again.
15. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0112. Refer to WIRING DIAGRAM .

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0111) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0111 and other DTCs are output A P0111 is output B HINT: If any DTCs other than P0111 are output, troubleshoot those DTCs first. B --> See step 3 A --> See step 2
2. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
3. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Scheme 285

1. The Intake Air Temperature (IAT) sensor, mounted on the Mass Air Flow (MAF) meter, monitors the IAT. The IAT sensor has a built-in thermistor with a resistance that varies according to the temperature of the intake air. When the IAT is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes ( (Scheme 250)above).
2. The IAT sensor is powered by a 5 V supply from the THA terminal of the ECM, via resistor R.
3. Resistor R and the IAT sensor are connected in series. When the resistance value of the IAT sensor changes, according to changes in the IAT, the voltage at terminal THA also varies. Based on this signal, the ECM increases the fuel injection volume when the engine is cold to improve driveability. HINT: When any of DTCs P0112 and P0113 is stored, the ECM enters fail-safe mode. During fail-safe mode, the IAT is estimated to be 20°C (68°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

HINT

When any of these DTCs are output, check the IAT by entering the following menus: Powertrain / Engine and ECT / All Data / Intake Air.

The ECM monitors the sensor voltage and uses this value to calculate the IAT. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a malfunction in the IAT sensor and stores a DTC.

Example

If the sensor output voltage is higher than 4.91 V for 0.5 seconds or more, the ECM determines that there is an open in the IAT sensor circuit, and stores DTC P0113. Conversely, if the output voltage is below 0.18 V for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and stores DTC P0112.

If the malfunction is not repaired successfully, a DTC is stored 0.5 seconds after the engine is next started.

P0112

P0113

Scheme 286

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Wait 0.5 seconds or more.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P0112 or P0113.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 287

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 288

Scheme 289

Scheme 290

Scheme 291

1. READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard Same as actual Intake Air Temperature (IAT). RESULT Temperature Displayed Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Same as actual IAT C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. B --> See step 4 C --> See step 6 A: Go to next step
2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the Mass Air Flow (MAF) meter connector. Connect terminals 4 (THA) and 5 (E2) of the MAF meter wire harness side connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher NG --> See step 3 OK --> See step 7
3. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-4 (THA) - C53-73 (THA) Always Below 1 ohms C3-5 (E2) - C53-98 (ETHA) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 8
4. PERFORM ACTIVE TEST USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the MAF meter connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 5 OK --> See step 9
5. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the MAF meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-4 (THA) or C53-73 (THA) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
6. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
7. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
8. CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

A thermistor, whose resistance value varies according to the ECT, is built into the Engine Coolant Temperature (ECT) sensor.

The structure of the sensor and its connection to the ECM are the same as those of the Intake Air Temperature (IAT) sensor.

HINT

When any of DTCs P0115, P0117 and P0118 is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECT is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.

HINT

When any of these DTCs is output, check the ECT by entering the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.

The Engine Coolant Temperature (ECT) sensor is used to monitor the ECT. The ECT sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are reflected in the output voltage from the sensor. The ECM monitors the sensor voltage and uses this value to calculate the ECT. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a fault in the ECT sensor and stores DTC(s).

Example

If the sensor output voltage is higher than 4.91 V for 0.5 seconds or more, the ECM determines that there is an open in the ECT sensor circuit, and stores DTC P0118. Conversely, if the voltage output is below 0.14 V for 0.5 seconds or more, the ECM determines that there is a short in the sensor circuit, and stores DTC P0117.

If the malfunction is not repaired successfully, a DTC is stored 0.5 seconds after the engine is next started.

P0115

P0117

P0118

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on.
6. Wait 0.5 seconds or more [A].
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P0115, P0117 or P0118.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
12. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 292

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 293

Scheme 294

Scheme 295

Scheme 296

1. READ OUTPUT DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0115 is output A P0117 is output B P0118 is output C B --> See step 5 C --> See step 3 A: Go to next step
2. READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value Between 75 and 100°C (167 and 212°F) with warm engine. RESULT Temperature Displayed Proceed to -40°C (-40°F) A 140°C (284°F) or higher B Between 75 and 100°C (167 and 212°F) C HINT: If there is an open circuit, the Techstream indicates -40°C (-40°F). If there is a short circuit, the Techstream indicates 140°C (284°F) or higher. B --> See step 5 C --> See step 7 A: Go to next step
3. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) Disconnect the Engine Coolant Temperature (ECT) sensor connector. Connect terminals 1 and 2 of the ECT sensor connector on the wire harness side. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value 140°C (284°F) or higher NG --> See step 4 OK --> See step 8
4. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the ECT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C15-2 - C53-76 (THW) Always Below 1 ohms C15-1 - C53-97 (ETHW) Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 9
5. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) Disconnect the ECT sensor connector. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard value -40°C (-40°F) NG --> See step 6 OK --> See step 10
6. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) Disconnect the ECT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C15-2 or C53-76 (THW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 11
7. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
8. CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. GOOD CONNECTION TO ECM. IF OK, REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
11. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Refer to DTC P0115. Refer to DESCRIPTION .

Engine coolant temperature (ECT) sensor cold start monitor

When a cold engine start is performed and then the engine is warmed up, if the ECT sensor value does not change, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is stored.

ECT sensor soak monitor

If the ECT sensor value does not change after the warmed up engine is stopped and then the next cold engine start is performed, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is stored.

ECT sensor high side stuck monitor (only for Mexico models)

The ECM monitors the sensor voltage and uses this value to calculate the ECT. If the sensor voltage output deviates from the normal operating range, the ECM interprets this deviation as a malfunction in the ECT sensor and stores the DTC.

Examples

1. Upon starting the engine, the ECT is between 35 and 60°C (95 and 140°F). If after driving for 250 seconds, the ECT remains within 3°C (5.4°F) of the starting temperature, the DTC is stored (2 trip detection logic).
2. Upon starting the engine, the ECT is over 60°C (140°F).If after driving at varying speeds (accelerating and decelerating) for a specified period of time, the ECT remains within 1°C (1.8°F) of the starting temperature, the DTC is stored (6 trip detection logic).

ECT SENSOR COLD START MONITOR

ECT SENSOR SOAK MONITOR

ECT SENSOR COLD START MONITOR

ECT SENSOR SOAK MONITOR

Scheme 297

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Enter the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
4. Check that the coolant temperature is 60°C (140°F) or less.
5. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
6. Turn the engine switch off and wait for at least 30 seconds.
7. Turn the engine switch on (IG) and turn the Techstream on [A].
8. Start the engine and idle it for 5 minutes or more [B]. HINT: If the engine coolant temperature does not change by 5°C (9°F) or more, the ECT sensor is malfunctioning. It is not necessary to continue this procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
10. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0116.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E].
14. Drive the vehicle at 40 km/h (25 mph) or more for a total of 5 minutes or more [D]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: In the event of the drive pattern being interrupted (possibly due to factors such as traffic conditions), the drive pattern can be resumed.
15. Check the DTC judgment result again [E]. HINT: If the judgment result shows INCOMPLETE or N/A, perform steps [D] and [E] again.
16. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

HINT

1. If any of DTCs P0115, P0117, P0118 or P0125 is output simultaneously with DTC P0116, the ECT sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0116) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read the DTC. RESULT Result Proceed to P0116 is output A P0116 and other DTCs are output B B --> See step 4 A: Go to next step
2. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT Remove the water inlet sub-assembly with thermostat. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . Measure the valve opening temperature of the water inlet sub-assembly with thermostat. Standard opening temperature 80 to 84°C (176 to 183°F) HINT: In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard. Reinstall the water inlet sub-assembly with thermostat. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . NG --> See step 5 OK --> See step 3
3. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
5. REPLACE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information)

The engine has two temperature sensors, an Engine Coolant Temperature (ECT) sensor and an Intake Air Temperature (IAT) sensor, to detect the temperature while the engine is in operation. A thermistor, whose resistance value varies according to the temperature, is built into each sensor. When the temperature is low, the resistance of the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are transmitted to the ECM as voltage changes. Based on these temperature signals output from the sensors, the ECM determines the fuel injection time and the ignition timing to control the engine.

Scheme 298

HINT

1. Waiting is required to prevent the temperature of the engine from affecting the readings. If the engine has been operated recently, it will not be possible to accurately compare the readings.

1. For diagnosis, in order to duplicate the detection conditions of the DTC, it is necessary to park the vehicle for 7 hours. Parking the vehicle for 7 hours ensures that the actual temperature of the ECT and IAT are very similar. When the vehicle has been parked for less than 7 hours, differences in the readings may exist, but this does not necessarily indicate a fault.

The ECM monitors the difference between the Engine Coolant Temperature (ECT) and the Intake Air Temperature (IAT) when the engine is started cold to detect the engine temperature conditions accurately. The monitor runs when the engine started cold after 7 hours or more have elapsed since the engine was stopped (engine switch turned off) on the previous trip. If the difference between the ECT and the IAT on a cold start exceeds 20°C (36°F), the ECM interprets this as a malfunction in the ECT sensor circuit and IAT sensor circuit, and stores the DTC.

Scheme 299

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation) [A].
4. Turn the engine switch off.
5. With the engine stopped, leave the vehicle as is for 7.5 hours or more [B].
6. Start the engine and wait 60 seconds or more [C].
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
8. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P011B.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [A] through [D] again.
12. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P011B) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Proceed to P011B A P011B and other DTCs B HINT: If any DTCs other than P011B are output, troubleshoot those DTCs first. B --> See step 4 A: Go to next step
2. READ VALUE USING TECHSTREAM (INTAKE AIR TEMPERATURE) Leave the vehicle for 7 hours or more. HINT: It is necessary leave the vehicle for 7 hours or more to allow conditions similar to the DTC detection conditions. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Intake Air. Read the value displayed on the Techstream. Standard Difference between the intake air temperature and the actual outside air temperature is within 10°C (18°F). HINT: Temperature readings on the vehicle outside temperature gauge (if equipped) are not suitable for comparing to the IAT reading. The outside temperature gauge has a significant delay built-in to prevent temperature swings from being displayed. Use an accurate thermometer to determine the outside air temperature. NG --> See step 5 OK: Go to next step
3. READ VALUE USING TECHSTREAM (COOLANT TEMPERATURE) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / All Data / Coolant Temp. Read the value displayed on the Techstream. Standard The difference between the coolant temperature and the actual outside air temperature is within 10°C (18°F). HINT: If the result is not as specified, check that there not heat sources such as a block heater in the engine compartment. NG --> See step 7 OK --> See step 6
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
5. REPLACE MASS AIR FLOW METER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
7. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

1. These DTCs relate to the Throttle Position (TP) sensor.

The Throttle Position (TP) sensor is mounted on the throttle body, and detects the opening angle of the throttle valve. This sensor is a non-contact type sensor. It uses Hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds.

The TP sensor has 2 sensor circuits, each of which transmits a signal, VTA1 and VTA2. VTA1 is used to detect the throttle valve angle and VTA2 is used to detect malfunctions in VTA1. The sensor signal voltages vary between 0 V and 5 V in proportion to the throttle valve opening angle, and are transmitted to the VTA terminals of the ECM.

As the valve closes, the sensor output voltage decreases and as the valve opens, the sensor output voltage increases. The ECM calculates the throttle valve opening angle according to these signals and controls the throttle actuator in response to driver inputs. These signals are also used in calculations such as air-fuel ratio correction, power increase correction and fuel-cut control.

Scheme 300

HINT

1. When any of these DTCs are set, check the throttle valve opening angle using the Techstream. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position No. 2.
2. Throttle Position No. 1 is the VTA1 signal, and Throttle Position No. 2 is the VTA2 signal.

REFERENCE (NORMAL CONDITION)

P0120, P0122, P0123, P0220, P0223, P2135

The ECM uses the Throttle Position (TP) sensor to monitor the throttle valve opening angle. There are several checks that the ECM performs to confirm the proper operation of the TP sensor.

1. A specific voltage difference is expected between the sensor terminals, VTA1 and VTA2, for each throttle valve opening angle. If the difference between VTA1 and VTA2 is incorrect, the ECM interprets this as a malfunction in the sensor, and sets a DTC.
2. VTA1 and VTA2 each have a specific voltage range. If VTA1 or VTA2 is outside the normal operating range, the ECM interprets this as a malfunction in the sensor, and sets a DTC.
3. VTA1 and VTA2 should never be close to the same voltage level. If VTA1 is within 0.02 V of VTA2, the ECM determines that there is a short circuit in the sensor, and sets a DTC.

If the malfunction is not repaired successfully, a DTC is set 2 seconds after the engine is next started.

P0121

This sensor transmits two signals: VTA1 and VTA2. VTA1 is used to detect the throttle opening angle and VTA2 is used to detect malfunctions in VTA1. The ECM performs several checks to confirm the proper operation of the TP sensor and VTA1.

For each throttle opening angle, a specific voltage difference is expected between the outputs of VTA1 and VTA2. If the output voltage difference between the two signals deviates from the normal operating range, the ECM interprets this as a malfunction in the TP sensor. The ECM illuminates the MIL and stores the DTC.

If the malfunction is not repaired successfully, the DTC is stored 2 seconds after the engine is next started.

ALL

P0120, P0122, P0123, P0220, P0222, P0223 AND P2135

P0121

P0120

P0121

P0122

P0123

P0220

P0222

P0223

P2135 CASE 1

P2135 CASE 2

Scheme 301

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. With the vehicle stationary, fully depress and release the accelerator pedal [B].
8. Idle the engine for 2 seconds or more [C].
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
10. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0120, P0121, P0122, P0123, P0220, P0222, P0223 or P2135.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [D] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

FAIL-SAFE

When any of these DTCs or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the engine switch is then turned off.

Scheme 302

HINT

1. These DTCs relate to the Throttle Position (TP) sensor.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 303

Scheme 304

1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1 and Throttle Position No. 2. Check the values displayed on the Techstream. Read the values. RESULT When Accelerator Pedal Released When Accelerator Pedal Depressed Trouble Area Proceed to Throttle Position No. 1 Throttle Position No. 2 Throttle Position No. 1 Throttle Position No. 2 0 V to 0.2 V 0 V to 0.2 V 0 V to 0.2 V 0 V to 0.2 V VC circuit open A 4.5 V to 4.98 V 4.5 V to 4.98 V 4.5 V to 4.98 V 4.5 V to 4.98 V E2 circuit open 0 V to 0.2 V, or 4.5 V to 4.98 V 2.1 V to 3.1 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 4.98 V 2.1 V to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.6 V to 1.4 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 4.98 V 0.6 V to 1.4 V (Fail-safe) 0 V to 0.2 V, or 4.5 V to 4.98 V VTA2 circuit open or ground short 0.5 V to 1.1 V 2.1 V to 3.1 V 3.2 V to 4.8 V (Not fail-safe) 4.6 V to 4.98 V (Not fail-safe) Throttle position sensor circuit normal B HINT: DTC P0121 is stored when the voltages output from VTA1 and VTA2 are not consistent with the characteristics of the sensors. Therefore, check the Freeze Frame Data when this DTC is output. Use the following formula to confirm relative fluctuations in voltage. Features of sensor output VTA2 x 0.8 is approximately equal to VTA1 + 1.11 V VTA1: Throttle Position No. 1 VTA2: Throttle Position No. 2 If DTC P0121 is output, proceed to "CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)" below. B --> See step 5 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) Disconnect the throttle body connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C4-5 (VC) - C53-80 (VCTA) Always Below 1 ohms C4-6 (VTA) - C53-78 (VTA1) Always Below 1 ohms C4-4 (VTA2) - C53-77 (VTA2) Always Below 1 ohms C4-3 (E2) - C53-79 (ETA) Always Below 1 ohms C4-5 (VC) or C53-80 (VCTA) - Body ground Always 10 kohms or higher C4-6 (VTA) or C53-78 (VTA1) - Body ground Always 10 kohms or higher C4-4 (VTA2) or C53-77 (VTA2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ECM (VC VOLTAGE) Disconnect the throttle body connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C4-5 (VC) - C4-3 (E2) Engine switch on (IG) 4.5 to 5.5 V NG --> See step 6 OK: Go to next step
4. REPLACE THROTTLE BODY ASSEMBLY Replace the throttle body assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
5. CHECK WHETHER DTC OUTPUT RECURS (THROTTLE POSITION SENSOR DTCS) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0120, P0121, P0122, P0123, P0220, P0222, P0223 and/or P2135 are output A No DTC is output B B --> END A --> See step 7
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
7. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

1. Refer to DTC P0115. Refer to «DESCRIPTION»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415) . DTC No. DTC Detection Condition Trouble Area P0125 The Engine Coolant Temperature (ECT) does not reach the closed loop enabling temperature for 20 minutes (this period varies with the engine start ECT) (2 trip detection logic). Engine Coolant Temperature (ECT) sensor Cooling system Water inlet sub-assembly with thermostat

The resistance of the ECT sensor varies in proportion to the actual ECT. The ECT supplies a constant voltage to the sensor and monitors the signal output voltage of the sensor. The signal output voltage varies according to the changing resistance of the sensor. After the engine is started, the ECT is monitored through this signal. If the ECT sensor indicates that the engine is not yet warm enough for closed loop fuel control, despite a specified period of time having elapsed since the engine was started, the ECM interprets this as a malfunction in the sensor or cooling system and stores the DTC.

Example

The ECT is -5°C (23°F) at engine start. After about 1 minute of running time, the ECT sensor still indicates that the engine is not warm enough to begin closed loop fuel (air-fuel ratio feedback) control. The ECM interprets this as a malfunction in the sensor or cooling system and stores the DTC.

Scheme 305

1. Leave the vehicle outside overnight.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and turn the Techstream on.
4. Enter the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
5. Check that the engine coolant temperature is 10°C (50°F) or less.
6. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Start the engine.
10. Wait 21 minutes or more [B].
11. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
12. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
13. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
14. Input the DTC: P0125.
15. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction.
16. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P0115. Refer to WIRING DIAGRAM .

HINT

1. If any of DTCs P0115, P0116, P0117 or P0118 is output simultaneously with DTC P0125, the Engine Coolant Temperature (ECT) sensor may have an open or a short circuit. Troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0125) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0125 is output A P0125 and other DTCs are output B HINT: If any DTCs other than P0125 are output, troubleshoot those DTCs first. B --> See step 4 A: Go to next step
2. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT Remove the water inlet sub-assembly with thermostat. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . Check the valve opening temperature of the water inlet sub-assembly with thermostat. Standard opening temperature 80 to 84°C (176 to 183°F) HINT: In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard. Reinstall the water inlet sub-assembly with thermostat. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . NG --> See step 5 OK: Go to next step
3. CHECK COOLING SYSTEM Check for defects in the cooling system that might cause the system to be too cold, such as abnormal radiator fan operation or any modifications. NG --> REPAIR OR REPLACE COOLING SYSTEM OK --> See step 6
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
5. REPLACE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information)
6. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

This DTC is stored when the Engine Coolant Temperature (ECT) does not reach 75°C (167°F) despite sufficient engine warm-up time having elapsed.

Scheme 306

The ECM estimates the ECT based on the starting temperature, engine loads, and engine speeds. The ECM then compares the estimated temperature with the actual ECT. When the estimated ECT reaches 75°C (167°F), the ECM checks the actual ECT. If the actual ECT is below 75°C (167°F), the ECM interprets this as a malfunction in the thermostat or the engine cooling system and stores the DTC.

Scheme 307

1. Stop the engine and allow it to soak.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and turn the Techstream on [A].
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
5. Enter the following menu items: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp and Intake Air.
6. Check if "Coolant Temp" is 56°C (133°F) or less and "Intake Air" is between 0 and 35°C (32 and 95°F).
7. Set the heater to MAX HOT with fresh air mode selected and turn the A/C off.
8. Start the engine and drive the vehicle at 80 km/h (50 mph) for 15 minutes [B]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. HINT: Data can be captured relatively easily by using the snapshot function in the Data List. Enter the following menu: Data List / Function / Snap-shot configuration / Record time / 5 min. Data capture can be started by using the target point. For example, setting the target point to an engine speed of 4000 RPM and then revving the engine, etc. to raise the engine speed to a speed of 4000 RPM or more will cause data capture to start.
9. After driving the vehicle at 80 km/h (50 mph) and "Coolant Temp" stabilizes, check that "Coolant Temp" is 75°C (167°F) or higher [C]. HINT: IF "Coolant Temp" is below 75°C (167°F) while driving the vehicle at 80 km/h (50 mph), inspect the cooling system and thermostat.

HINT

1. This DTC relates to the thermostat.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0128) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0128 is output A P0128 and other DTCs are output B HINT: If any DTCs other than P0128 are output, troubleshoot those DTCs first. B --> See step 4 A: Go to next step
2. CHECK COOLING SYSTEM Check for defects in the cooling system that might cause the system to be too cold, such as abnormal radiator fan operation or any modifications. NG --> REPAIR OR REPLACE COOLING SYSTEM OK: Go to next step
3. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT Remove the water inlet sub-assembly with thermostat. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . Measure the valve opening temperature of the water inlet sub-assembly with thermostat. Standard opening temperature 80 to 84°C (176 to 183°F) HINT: In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard. Reinstall the water inlet sub-assembly with thermostat. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information) . NG --> See step 5 OK --> See step 6
4. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
5. REPLACE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/cooling-fan/#engine-cooling-system-3ur-fe-service-information)
6. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

CAUTION / NOTICE / HINT

HINT

Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located far from the engine assembly.

A three-way catalytic converter (TWC) is used in order to convert the carbon monoxide (CO), hydrocarbon (HC), and nitrogen oxides (NOx) into less harmful substances. To allow the TWC to function effectively, it is necessary to keep the air-fuel ratio of the engine near the stoichiometric air-fuel ratio. For helping the ECM to deliver accurate air-fuel ratio control, a Heated Oxygen (HO2) sensor becomes used.

The HO2 sensor is located behind the TWC, and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low).

When the air-fuel ratio becomes lean, the oxygen concentration in the exhaust gas becomes rich. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is lean (low voltage, i.e. less than 0.45 V).

Conversely, when the air-fuel ratio is richer than the stoichiometric air-fuel level, the oxygen concentration in the exhaust gas becomes lean. The HO2 sensor informs the ECM that the post-TWC air-fuel ratio is rich (high voltage, i.e. more than 0.45 V). The HO2 sensor has the property of changing its output voltage drastically when the air-fuel ratio is close to the stoichiometric level.

The ECM uses the supplementary information from the HO2 sensor to determine whether the air-fuel ratio after the TWC is rich or lean, and adjusts the fuel injection time accordingly. Thus, if the HO2 sensor is working improperly due to internal malfunctions, the ECM is unable to compensate for deviations in the primary air-fuel ratio control.

Scheme 308

FOR MEXICO MODELS

Active Air-Fuel Ratio Control

The ECM usually performs air-fuel ratio feedback control so that the Air-Fuel Ratio (A/F) sensor output indicates a near stoichiometric air-fuel level. This vehicle includes active air-fuel ratio control in addition to regular air-fuel ratio control. The ECM performs active air-fuel ratio control to detect any deterioration in the Three-Way Catalytic Converter (TWC) and Heated Oxygen (HO2) sensor malfunctions (refer to the diagram below).

Active air-fuel ratio control is performed for approximately 15 to 20 seconds while driving with a warm engine. During active air-fuel ratio control, the air-fuel ratio is forcibly regulated to become lean or rich by the ECM. If the ECM detects a malfunction, a DTC is stored.

Abnormal Voltage Output of HO2 Sensor (DTC P0136 and P0156)

While the ECM is performing active air-fuel ratio control, the air-fuel ratio is forcibly regulated to become rich or lean. If the sensor is not functioning properly, the voltage output variation is small. For example, when the HO2 sensor voltage does not decrease to below 0.21 V and does not increase to higher than 0.59 V during active air-fuel ratio control, the ECM determines that the sensor voltage output is abnormal and stores DTC P0136 or P0156.

Scheme 309

Open or Short in Heated Oxygen (HO2) Sensor Circuit (DTC P0137 and P0157 or P0138 and P0158)

During active air-fuel ratio control, the ECM calculates the Oxygen Storage Capacity (OSC)* of the Three-Way Catalytic Converter (TWC) by forcibly regulating the air-fuel ratio to become rich or lean. If the HO2 sensor has an open or short, or the voltage output of the sensor decreases significantly, the OSC indicates an extraordinarily high value. Even if the ECM attempts to continue regulating the air-fuel ratio to become rich or lean, the HO2 sensor output does not change.

While performing active air-fuel ratio control, when the target air-fuel ratio is rich and the HO2 sensor voltage output is less than 0.21 V (lean), the ECM interprets this as an abnormally low sensor output voltage and stores DTC P0137 or P0157. When the target air-fuel ratio is lean and the voltage output is more than 0.59 V (rich) during active air-fuel ratio control, the ECM determines that the sensor voltage output is abnormally high, and stores DTC P0138 or P0158.

HINT

DTC P0138 or P0158 is also stored if the HO2 sensor voltage output is 1.2 V or more for 10 seconds or more.

*: The TWC has the capability to store oxygen. The OSC and the emission purification capacity of the TWC are mutually related. The ECM determines whether the catalyst has deteriorated based on the calculated OSC value. Refer to DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) .

Scheme 310

High or Low Impedance of Heated Oxygen (HO2) Sensor (DTC P0136 and P0156 or P0137 and P157)

Scheme 311

During normal air-fuel ratio feedback control, there are small variations in the exhaust gas oxygen concentration. In order to continuously monitor the slight variations in the HO2 sensor signal while the engine is running, the impedance* of the sensor is measured by the ECM. The ECM determines that there is a malfunction in the sensor when the measured impedance deviates from the standard range.

*: The effective resistance in an alternating current electrical circuit.

HINT

1. The impedance cannot be measured using an ohmmeter.
2. DTC P0136 and P0156 indicate the deterioration of the HO2 sensor. The ECM stores this DTC by calculating the impedance of the sensor when the typical enabling conditions are satisfied (2 driving cycles).
3. DTC P0137 and P0157 indicate an open or short circuit in the HO2 sensor (2 driving cycles). The ECM stores this DTC when the impedance of the sensor exceeds the threshold 15 kohms.

HO2 sensor output voltage during fuel cut (P0139 or P0159)

The sensor output voltage drops to below 0.2 V (extremely lean status) immediately when the vehicle decelerates and fuel cut is operating. If the voltage does not drop to below 0.2 V when accumulated intake air mass is more than 16.6 g, or does not drop from 0.35 V to 0.2 V within 1 second, the ECM determines that the sensor response has deteriorated, illuminates the MIL and stores a DTC.

ALL

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (ABNORMAL VOLTAGE OUTPUT, HIGH VOLTAGE AND LOW VOLTAGE)

HEATED OXYGEN SENSOR IMPEDANCE (LOW)

HEATED OXYGEN SENSOR IMPEDANCE (HIGH)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (EXTREMELY HIGH)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE DURING FUEL CUT

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (ABNORMAL VOLTAGE OUTPUT)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (LOW)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (HIGH)

HEATED OXYGEN SENSOR IMPEDANCE (LOW)

HEATED OXYGEN SENSOR IMPEDANCE (HIGH)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE (EXTREMELY HIGH)

HEATED OXYGEN SENSOR OUTPUT VOLTAGE DURING FUEL CUT

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

P0136, P0137, P0138, P0156, P0157 and P0158

Scheme 312

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
7. With the transmission in 4th gear or higher, drive the vehicle at 60 to 120 km/h (37 to 75 mph) for 10 minutes or more [C]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0136, P0137, P0138, P0156, P0157, or P0158.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [C] and [D].
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

P0139 and P0159

Scheme 313

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
7. Drive the vehicle at 60 km/h (37 mph), and then decelerate the vehicle by releasing the accelerator pedal for 7 seconds or more to perform the fuel-cut [C]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0139, or P0159.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, move the shift lever to 2 and then perform steps [C] through [D] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 314

HINT

Malfunctioning areas can be identified by performing the Control the Injection Volume function provided in the Active Test. The Control the Injection Volume function can help to determine whether the air fuel ratio sensor, heated oxygen sensor and other potential trouble areas are malfunctioning.

The following instructions describe how to conduct the Control the Injection Volume operation using the Techstream.

1. Connect the Techstream to the DLC3.
2. Start the engine and turn the Techstream on.
3. Run the engine at an engine speed of 2500 RPM for approximately 90 seconds.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume.
5. Perform the Active Test operation with the engine idling.
6. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream.

HINT

1. Change the fuel injection volume within the range of -12.0% to +12.0%. The injection volume can be changed in fine gradations.
2. Each sensor reacts in accordance with increases and decreases in the fuel injection volume.

Note. 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.

Case Air Fuel Ratio Sensor (Sensor 1) Output Voltage Heated Oxygen Sensor (Sensor 2) Output Voltage Main Suspected Trouble Area 1 - 2 Air fuel ratio sensor Air fuel ratio sensor heater Air fuel ratio sensor circuit 3 Heated oxygen sensor Heated oxygen sensor heater Heated oxygen sensor circuit 4 Fuel injector Fuel pressure Gas leak from exhaust system (air-fuel ratio extremely rich or lean)

HINT

1. Following the Control the Injection Volume procedure enables technicians to check and graph the voltage outputs of both the air fuel ratio and heated oxygen sensors.
2. To display the graph, enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume / All Data / AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. If the OX1B wire from the ECM connector is short-circuited to the +B wire, DTC P0136 will be stored.
3. If the OX2B wire from the ECM connector is short-circuited to the +B wire, DTC P0156 will be stored.
4. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
5. Bank 2 refers to the bank that does not include the No. 1 cylinder.
6. Sensor 1 refers to the sensor closest to the engine assembly.
7. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 315

Scheme 316

Scheme 317

Scheme 318

1. READ DTC OUTPUT (DTC P0136, P0137, P0138, P0139, P0156, P0157, P0158 AND P0159) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0138 or P0158 is output A P0137 or P0157 is output B P0136 or P0156 is output C P0139 or P0159 is output D P0136, P0137, P0138, P0156, P0157 or P0158 and other DTCs are output E B --> See step 9 C --> See step 7 D --> See step 18 E --> GO TO DTC CHART «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart) A: Go to next step
2. READ VALUE USING TECHSTREAM (OUTPUT VOLTAGE OF HEATED OXYGEN SENSOR) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / O2S B1S2 or O2S B2S2. Allow the engine to idle. Read the Heated Oxygen (HO2) sensor output voltage while idling. RESULT Result Proceed to 1.0 V or more A Less than 1.0 V B B --> See step 5 A: Go to next step
3. INSPECT HEATED OXYGEN SENSOR (CHECK FOR SHORT) Disconnect the HO2 sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (+B) - 3 (OX1B) Always 10 kohms or higher 2 (+B) - 4 (E1) Always 10 kohms or higher 2 (+B) - 3 (OX2B) Always 10 kohms or higher 2 (+B) - 4 (E1) Always 10 kohms or higher NG --> See step 23 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-45 (HT1B) - C53-114 (OX1B) Always 10 kohms or higher C53-44 (HT2B) - C53-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 22
5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of Air Fuel Ratio (A/F) sensors and HO2 sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in 0.1 or 0.2% graduations 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. The A/F sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Display Item (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (A/F) AFS Voltage B2S1 (A/F) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1S2 or O2S B2S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or higher than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 15 OK: Go to next step
6. CHECK AIR FUEL RATIO SENSOR HINT: This Air Fuel Ratio (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 2.2 mA in this test. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Drive the vehicle using the drive pattern as listed below: WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws. Warm up the engine until the engine coolant temperature reaches 75°C (167°F) or more. Drive the vehicle at 60 km/h (37 mph) or more for 10 minutes or more. Stop the vehicle. Accelerate the vehicle until 60 km/h (37 mph) or more and decelerate for 7 seconds or more. Perform this 3 times. Enter the following menus: Powertrain / Engine and ECT / Monitor / O2 Sensor / Details. 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. Select RANGE B1S1 or RANGE B2S1. Read the test value. Standard current Below 2.2 mA HINT: If the Techstream Accelerate incomplete again, increase the vehicle speed and use the second gear to decelerate the vehicle. WARNING: Do not turn the engine switch off during this step because the test results will be lost. OK --> See step 12 NG --> See step 15
7. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of HO2 sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in 0.1 or 0.2% graduations within the range. The A/F sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Standard voltage Fluctuates between 0.4 V or less and 0.55 V or higher. NG --> See step 9 OK: Go to next step
8. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine and turn the Techstream on. Warm up the engine. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Change the fuel injection volume using the Techstream, and monitor the voltage output of Air Fuel Ratio (A/F) and HO2 sensors displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12% and +12%. The injection volume can be changed in 0.1 or 0.2% graduations 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. The A/F sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. RESULT Display Item (Sensor) Voltage Variation Proceed to AFS Voltage B1S1 (A/F) AFS Voltage B2S1 (A/F) Alternates between higher than and below 3.3 V OK Remains at higher than 3.3 V NG Remains at below 3.3 V NG HINT: A normal HO2 sensor voltage (O2S B1S2 or O2S B2S2) reacts in accordance with increases and decreases in fuel injection volumes. When the A/F sensor voltage remains at either less or higher than 3.3 V despite the HO2 sensor indicating a normal reaction, the A/F sensor is malfunctioning. NG --> See step 15 OK --> CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (AND REPAIR CAUSE INJECTOR, FUEL PRESSURE, GAS LEAK, ETC)
9. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT OK: Go to next step
10. INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE) Disconnect the HO2 sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HT1B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT1B) - 4 (E1) Always 10 kohms or higher 1 (HT2B) - 2 (+B) 20°C (68°F) 11 to 16 ohms 1 (HT2B) - 4 (E1) Always 10 kohms or higher NG --> See step 23 OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM) Disconnect the HO2 sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C17-1 (HT1B) - C53-45 (HT1B) Always Below 1 ohms C17-3 (OX1B) - C53-114 (OX1B) Always Below 1 ohms C17-4 (E1) - C53-115 (EX1B) Always Below 1 ohms C18-1 (HT2B) - C53-44 (HT2B) Always Below 1 ohms C18-3 (OX2B) - C53-112 (OX2B) Always Below 1 ohms C18-4 (E1) - C53-113 (EX2B) Always Below 1 ohms C17-1 (HT1B) or C53-45 (HT1B) - Body ground Always 10 kohms or higher C17-3 (OX1B) or C53-114 (OX1B) - Body ground Always 10 kohms or higher C18-1 (HT2B) or C53-44 (HT2B) - Body ground Always 10 kohms or higher C18-3 (OX2B) or C53-112 (OX2B) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. REPLACE HEATED OXYGEN SENSOR Replace the HO2 sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
13. PERFORM CONFIRMATION DRIVING PATTERN Refer to the confirmation driving pattern for P0136, P0137, P0138 P0156, P0157 and P0158. NEXT: Go to next step
14. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158. 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 Result Proceed to ABNORMAL (P0136, P0137, P0138, P0156, P0157 or P0158 detected) A NORMAL (No output) B B --> END A --> See step 25
15. REPLACE AIR FUEL RATIO SENSOR Replace the A/F sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
16. PERFORM CONFIRMATION DRIVING PATTERN Refer to the confirmation driving pattern for P0136, P0137, P0138 P0156, P0157 and P0158. NEXT: Go to next step
17. CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158. 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 Result Proceed to ABNORMAL (P0136, P0137, P0138, P0156, P0157 or P0158 detected) A NORMAL (No output) B B --> END A --> See step 23
18. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leakage. OK No gas leakage. NG --> REPAIR OR REPLACE EXHAUST GAS LEAK POINT NEXT: Go to next step
19. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT) Turn the engine switch off and wait for 5 minutes. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-45 (HT1B) - C53-114 (OX1B) Always 10 kohms or higher C53-44 (HT2B) - C53-112 (OX2B) Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
20. PERFORM CONFIRMATION DRIVING PATTERN Refer to the confirmation driving pattern for P0139 and P0159. NEXT: Go to next step
21. READ DTC OUTPUT (P0139 OR P0159 IS OUTPUT AGAIN) Read the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . RESULT Result Proceed to No output A P0139 or P0159 detected B B --> See step 23 A --> See step 24
22. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
23. REPLACE HEATED OXYGEN SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
24. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
25. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

1. Refer to DTC P2195. Refer to «DESCRIPTION»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests) .
2. Sensor 1 refers to the sensor mounted in front of the three-way catalytic converter and located near the engine assembly.

1. *: Calculated by ECM based on the air fuel ratio sensor output.

After the engine is warmed up, the ECM carries out air-fuel ratio feedback control, and maintains the air-fuel ratio at the theoretical level. In addition, after all the preconditions have been met, active air-fuel ratio control is carried out for approximately 10 seconds, and during active air-fuel ratio control, the ECM measures the response of the air fuel ratio sensor by increasing or decreasing a specific injection volume based on the theoretical air-fuel ratio learned during normal air-fuel control. The ECM determines whether there is an air fuel ratio sensor malfunction at the mid-point of active air-fuel ratio control.

If the air fuel ratio sensor's response ability is reduced, DTCs P014C P014D, P014E and P014F are stored.

If the time it takes the air fuel ratio sensor output to change is delayed, DTCs P015A, P015B, P015C and P015D are stored.

Scheme 319

AIR FUEL RATIO SENSOR (BANK 1) SLOW RESPONSE (RICH TO LEAN)

AIR FUEL RATIO SENSOR (BANK 1) SLOW RESPONSE (LEAN TO RICH)

AIR FUEL RATIO SENSOR (BANK 2) SLOW RESPONSE (RICH TO LEAN)

AIR FUEL RATIO SENSOR (BANK 2) SLOW RESPONSE (LEAN TO RICH)

AIR FUEL RATIO SENSOR (BANK 1) DELAYED RESPONSE (RICH TO LEAN)

AIR FUEL RATIO SENSOR (BANK 1) DELAYED RESPONSE (LEAN TO RICH)

AIR FUEL RATIO SENSOR (BANK 2) DELAYED RESPONSE (RICH TO LEAN)

AIR FUEL RATIO SENSOR (BANK 2) DELAYED RESPONSE (LEAN TO RICH)

Refer to Checking Monitor Status. Refer to CHECKING MONITOR STATUS .

HINT

Performing this confirmation pattern will activate the A/F sensor response monitor.

Scheme 320

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
5. Turn the engine switch off and wait for at least 30 seconds.
6. Turn the engine switch on (IG) and turn the Techstream on.
7. Enter the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / O2 Sensor / Details.
8. Check that the monitor item O2 Sensor is Incomplete. HINT: The test values for the test items RL RES RATE B1S1, LR RES RATE B1S1, RL DELAY B1S1, LR DELAY B1S1, RL RES RATE B2S1, LR RES RATE B2S1, RL DELAY B2S1, and LR DELAY B2S1 do not exist in the Detail of O2 Sensor monitor at this time (the initial value of "0.000" is indicated in each test item).
9. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or higher) [A].
10. Drive the vehicle at a constant speed between 75 and 100 km/h (47 and 62 mph) for 10 minutes [B]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
11. Check that the monitor item O2 Sensor becomes Complete. HINT: Check the test values on the Techstream by entering the following menus: Powertrain / Engine and ECT / Monitor / Current Monitor / O2 Sensor / Details / RL RES RATE B1S1, LR RES RATE B1S1, RL DELAY B1S1, LR DELAY B1S1, RL RES RATE B2S1, LR RES RATE B2S1, RL DELAY B2S1, and LR DELAY B2S1.
12. If the monitor item O2 Sensor does not become Complete (if the test values indicated on the Techstream do not change), perform Readiness Monitor Drive Pattern for the A/F sensor and heated oxygen sensor. Refer to «READINESS MONITOR DRIVE PATTERN»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__readiness-monitor-drive-pattern) .
13. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
14. Read pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
15. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
16. Input the DTC: P014C, P014D, P014E, P014F, P015A, P015B, P015C and P015D.
17. Check the DTC judgment result. Techstream Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
18. If the DTC judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P2195. Refer to WIRING DIAGRAM .

HINT

1. A low air fuel ratio sensor voltage could be caused by a rich air fuel mixture. Check for conditions that would cause the engine to run rich.
2. A high air fuel ratio sensor voltage could be caused by a lean air fuel mixture. Check for conditions that would cause the engine to run lean.
3. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
4. Bank 2 refers to the bank that does not include the No. 1 cylinder.
5. Sensor 1 refers to the sensor closest to the engine assembly.
6. Sensor 2 refers to the sensor farthest away from the engine assembly.
7. Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C OR P015D) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C or P015D is output A DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C or P015D and other are output B HINT: If any DTCs other than DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C or P015D are output, troubleshoot those DTCs first. B --> See step 10 A: Go to next step
2. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Inspect the air fuel ratio sensor. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NG --> See step 11 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM). Refer to «PROCEDURE - Step 1»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests) NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT AIR FUEL RATIO SENSOR Check that the proper air fuel ratio sensor is installed to the vehicle. NG --> See step 12 OK: Go to next step
5. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS (DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C OR P015D) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read pending DTCs. RESULT Result Proceed to DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C or P015D is output A DTC is not output (Pending DTC is not output) B B --> See step 13 A: Go to next step
7. REPLACE AIR FUEL RATIO SENSOR Replace the air fuel ratio sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
8. PERFORM CONFIRMATION DRIVING PATTERN Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. NEXT: Go to next step
9. CHECK WHETHER DTC OUTPUT RECURS (DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C OR P015D) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read pending DTCs. RESULT Result Proceed to DTC is not output (Pending DTC is not output) A DTC P014C, P014D, P014E, P014F, P015A, P015B, P015C or P015D is output B B --> See step 14 A --> END
10. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
11. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
12. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
13. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
14. CHECK EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO. Refer to «DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2)»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostic-codes-p0010-p0415)

The fuel trim is related to the feedback compensation value, not to the basic injection time. The fuel trim consists of both the short-term and the long-term fuel trims.

The short-term fuel trim is fuel compensation that is used to constantly maintain the air-fuel ratio at stoichiometric levels. The signal from the Air-Fuel Ratio (A/F) sensor indicates whether the air-fuel ratio is rich or lean compared to the stoichiometric ratio. This triggers a reduction in the fuel injection volume if the air-fuel ratio is rich and an increase in the fuel injection volume if it is lean.

Factors such as individual engine differences, wear over time and changes in operating environment cause short-term fuel trim to vary from the central value. The long-term fuel trim, which controls overall fuel compensation, compensates for long-term deviations in the fuel trim from the central value caused by the short-term fuel trim compensation.

HINT

1. When DTC P0171 or P0174 is stored, the actual air-fuel ratio is on the lean side. When DTC P0172 or P0175 is stored, the actual air-fuel ratio is on the rich side.
2. If the vehicle runs out of fuel, the air-fuel ratio is lean and DTC P0171 or P0174 may be stored. The MIL is then illuminated.
3. When the total of the short-term and long-term fuel trim values is within the malfunction threshold (and the engine coolant temperature is higher than 75°C [167°F]), the system is functioning normally.

Under closed loop fuel control, fuel injection volumes that deviate from those estimated by the ECM cause changes in the long-term fuel trim compensation value. The long-term fuel trim is adjusted when there are persistent deviations in the short-term fuel trim values. Deviations from the ECM estimated fuel injection volumes also affect the average fuel trim learning value, which is a combination of the average short-term fuel trim (fuel feedback compensation value) and the average long-term fuel trim (learning value of the air-fuel ratio). If the average fuel trim learning value exceeds the malfunction threshold, the ECM interprets this as a fault in the fuel system and stores DTC(s).

Example

The average fuel trim learning value is +35% or more or -35% or less, the ECM interprets this as a fuel system malfunction.

Scheme 321

Scheme 322

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or more) with all the accessories switched OFF [B].
7. With the engine warmed up, idle the engine for 2 minutes or more [C].
8. Drive the vehicle at between 60 km/h and 120 km/h (37 mph and 75 mph) and at an engine speed of between 1400 RPM and 3200 RPM for 5 minutes or more [D]. WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
10. Read the Pending DTCs. HINT: If a pending DTC is output, the system is malfunctioning. If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
12. Input the DTC: P0171, P0172, P0174 or P0175.
13. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [C] through [E] again.
14. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Refer to DTC P2195. Refer to WIRING DIAGRAM .

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would cause the engine to run rich.
3. A high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that would cause the engine to run lean.
4. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
5. Bank 2 refers to the bank that does not include the No. 1 cylinder.
6. Sensor 1 refers to the sensor closest to the engine assembly.
7. Sensor 2 refers to the sensor farthest away from the engine assembly.

Scheme 323

Scheme 324

Scheme 325

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172, P0174 OR P0175) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0171, P0172, P0174 or P0175 is output A P0171, P0172, P0174 or P0175 and other DTCs are output B HINT: If any DTCs other than P0171, P0172, P0174 or P0175 are output, troubleshoot those DTCs first. B --> See step 23 A: Go to next step
2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 24 OK: Go to next step
3. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leaks. OK No leaks from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
4. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Run the engine at an engine speed of 2500 RPM for approximately 90 seconds. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume. Perform the Control the Injection Volume operation with the engine idling. Monitor the output voltages of the air fuel ratio and heated oxygen sensors (AFS Voltage B1S1 and O2S B1S2 or AFS Voltage B2S1 and O2S B2S2) displayed on the Techstream. HINT: Change the fuel injection volume within the range of -12.0% to +12.0%. The injection volume can be changed in fine gradations. 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. If the sensor output voltage does not change (almost no reaction) while performing the Active Test, the sensor may be malfunctioning. Techstream Display (Sensor) Injection Volume Status Voltage AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) +12% Rich Below 3.1 V AFS Voltage B1S1 or AFS Voltage B2S1 (Air fuel ratio) -12% Lean Higher than 3.4 V O2S B1S2 or O2S B2S2 (Heated oxygen) +12% Rich Higher than 0.55 V O2S B1S2 or O2S B2S2 (Heated oxygen) -12% Lean Below 0.4 V Result Status of AFS Voltage B1S1 or AFS Voltage B2S1 Status of O2S B1S2 or O2S B2S2 Air Fuel Ratio Condition and Air Fuel Ratio Sensor Condition Suspected Trouble Area Proceed to Lean/Rich Lean/Rich Normal - A Lean Lean Actual air fuel ratio lean PCV valve and hose PCV hose connections Fuel injector blockage Gas leaks from exhaust system Air induction system Fuel pressure Mass air flow meter Engine coolant temperature sensor A Rich Rich Actual air fuel ratio rich Fuel injector leakage or blockage Gas leaks from exhaust system Ignition system Fuel pressure Mass air flow meter Engine coolant temperature sensor A Lean Lean/Rich Air fuel ratio sensor malfunction Air fuel ratio sensor B Rich Lean/Rich Air fuel ratio sensor malfunction Air fuel ratio sensor B Lean: During the Control the Injection Volume Active Test, the air fuel ratio sensor output voltage (AFS Voltage) is consistently higher than 3.4 V, and the heated oxygen sensor output voltage (O2S) is consistently below 0.4 V. Rich: During the Control the Injection Volume Active Test, the AFS Voltage is consistently below 3.1 V, and the O2S is consistently higher than 0.55 V. Lean/Rich: During the Control the Injection Volume Active Test, the output voltage of the heated oxygen sensor alternates correctly. B --> See step 11 A: Go to next step
5. READ VALUE USING TECHSTREAM (COOLANT TEMP) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp. Read the Coolant Temp twice, when the engine is both cold and warmed up. Standard With cold engine Same as ambient air temperature. With warm engine Between 75°C and 100°C (167°F and 212°F). NG --> See step 25 OK: Go to next step
6. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 RPM. Standard Between 25.2 gm/s and 35.2 gm/s (shift lever: N; A/ C: Off). NG --> See step 16 OK: Go to next step
7. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> REPAIR OR REPLACE FUEL SYSTEM OK: Go to next step
8. CHECK FOR EXHAUST GAS LEAK Check for exhaust gas leaks. OK No gas leaks. NG --> REPAIR OR REPLACE EXHAUST SYSTEM OK: Go to next step
9. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
10. INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME) Check the fuel injector. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . OK --> See step 15 NG --> See step 26
11. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE) Disconnect the A/F sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (HA1A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA1A) - 4 (A1A-) Always 10 kohms or higher 1 (HA2A) - 2 (+B) 20°C (68°F) 1.6 to 3.2 ohms 1 (HA2A) - 4 (A2A-) Always 10 kohms or higher NG --> See step 27 OK: Go to next step
12. CHECK TERMINAL VOLTAGE (+B OF A/F SENSOR) Disconnect the A/F sensor connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C47-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V C48-2 (+B) - Body ground Engine switch on (IG) 11 to 14 V NG --> See step 21 OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (A/F SENSOR - ECM) Disconnect the A/F sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-1 (HA1A) - C53-22 (HA1A) Always Below 1 ohms C47-3 (A1A+) - C53-126 (A1A+) Always Below 1 ohms C47-4 (A1A-) - C53-125 (A1A-) Always Below 1 ohms C48-1 (HA2A) - C53-20 (HA2A) Always Below 1 ohms C48-3 (A2A+) - C53-103 (A2A+) Always Below 1 ohms C48-4 (A2A-) - C53-102 (A2A-) Always Below 1 ohms C47-1 (HA1A) or C53-22 (HA1A) - Body ground Always 10 kohms or higher C47-3 (A1A+) or C53-126 (A1A+) - Body ground Always 10 kohms or higher C47-4 (A1A-) or C53-125 (A1A-) - Body ground Always 10 kohms or higher C48-1 (HA2A) or C53-20 (HA2A) - Body ground Always 10 kohms or higher C48-3 (A2A+) or C53-103 (A2A+) - Body ground Always 10 kohms or higher C48-4 (A2A-) or C53-102 (A2A-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (A/F SENSOR - ECM) OK: Go to next step
14. REPLACE AIR FUEL RATIO SENSOR Replace the A/F sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
15. PERFORM CONFIRMATION DRIVING PATTERN Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0171, P0172, P0174 or P0175. Check the DTC judgment result. RESULT Result Proceed to ABNORMAL (DTC P0171, P0172, P0174 or P0175 is output) A NORMAL (No DTC is output) B B --> END A: Go to next step
16. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM. HINT: Repair any problems. NEXT: Go to next step
17. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. Result Result Proceed to DTC P0171, P0172, P0174 or P0175 is output A DTC is not output B B --> END A: Go to next step
18. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
19. REPLACE MASS AIR FLOW METER Replace the mass air flow meter assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) HINT: If the result of the inspection performed in step 6 indicated no problem, proceed to the next step without replacing the mass air flow meter assembly. NEXT: Go to next step
20. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to DTC is not output A DTC P0171, P0172, P0174 or P0175 is output B B --> See step 29 A --> END
21. CHECK HARNESS AND CONNECTOR (INTEGRATION RELAY - A/F SENSOR) Disconnect the A/F sensor connector. Remove the integration relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C47-2 (+B) - 1A-4 Always Below 1 ohms C48-2 (+B) - 1A-4 Always Below 1 ohms C47-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher C48-2 (+B) or 1A-4 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
22. INSPECT INTEGRATION RELAY (A/F) Remove the integration relay from the engine room relay block. Disconnect the integration connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1C-1 - 1A-4 Battery voltage not applied 10 kohms or higher Battery voltage applied to terminals 1A-2 and 1A-3 Below 1 ohms NG --> REPLACE INTEGRATION RELAY (A/F) OK --> See step 28
23. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
24. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
25. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
26. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
27. REPLACE AIR FUEL RATIO SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
28. CHECK ECM POWER SOURCE CIRCUIT. Refer to «ECM Power Source Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
29. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

Scheme 326

When the engine misfires, high concentrations of hydrocarbons (HC) enter the exhaust gas. Extremely high HC concentration levels can cause increases in exhaust emission levels. High concentrations of HC can also cause increases in the Three-Way Catalytic Converter (TWC) temperature, which may cause damage to the TWC. To prevent these increases in emissions and to limit the possibility of thermal damage, the ECM monitors the misfire rate. When the temperature of the TWC reaches the point of thermal degradation, the MIL blinks. To monitor misfires, the ECM uses both the Camshaft Position (CMP) sensor and the Crankshaft Position (CKP) sensor. The CMP sensor is used to identify any misfiring cylinders and the CKP sensor is used to measure variations in the crankshaft rotation speed. Misfires are counted as when the crankshaft rotation speed variations exceed predetermined thresholds.

If the misfire rate exceeds the threshold level, the ECM illuminates the MIL and stores DTC(s).

When multiple DTCs for misfiring cylinders are stored, but DTC P0300 is not stored, it indicates that misfires have been detected in different cylinders at different times. DTC P0300 is only stored when several misfiring cylinders are detected at the same time.

The ECM illuminates the MIL and stores a DTC when either one of the following conditions, which could cause emission deterioration, is detected (2 trip detection logic).

1. Within the first 1000 crankshaft revolutions of the engine starting, an excessive misfiring rate (approximately 20 to 50 misfires per 1000 crankshaft revolutions) occurs once.
2. An excessive misfiring rate (approximately 20 to 50 misfires per 1000 crankshaft revolutions) occurs a total of 4 times.

The ECM flashes the MIL (immediate detection logic) and stores a DTC (2 trip detection logic) when either one of the following conditions, which could cause the Three-Way Catalytic Converter (TWC) damage, is detected.

1. At a high engine speed, a catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs once.
2. At a normal engine speed, a catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs 3 times.

HINT

If a catalyst damage misfire occurs, the ECM informs the driver by flashing the MIL.

Misfire Monitor for Mexico Models

The ECM illuminates the MIL and sets a DTC when either one of the following conditions, which could cause emission deterioration, is detected (2 trip detection logic).

1. Within the first 1000 crankshaft revolutions of the engine starting, an excessive misfiring rate (approximately 250 misfires per 1000 crankshaft revolutions) occurs once.
2. An excessive misfiring rate (approximately 125 misfires per 1000 crankshaft revolutions) occurs a total of 4 times.

The ECM flashes the MIL and sets a DTC when the following condition, which could cause the Three-Way Catalytic Converter (TWC) damage, is detected (2 trip detection logic).

1. A catalyst damage misfire, which is monitored every 200 crankshaft revolutions, occurs 3 times.

MISFIRE

MONITOR PERIOD OF EMISSION-RELATED-MISFIRE

MONITOR PERIOD OF CATALYST-DAMAGED-MISFIRE (MIL BLINKS)

FOR MEXICO MODELS

MISFIRE: FOR MEXICO MODELS

MONITOR PERIOD OF EMISSION-RELATED-MISFIRE: FOR MEXICO MODELS

MONITOR PERIOD OF CATALYST-DAMAGED-MISFIRE (MIL BLINKS): FOR MEXICO MODELS

MONITOR PERIOD OF EMISSION-RELATED-MISFIRE

MONITOR PERIOD OF CATALYST-DAMAGED-MISFIRE (MIL BLINKS)

FOR MEXICO MODELS

MONITOR PERIOD OF EMISSION-RELATED-MISFIRE: FOR MEXICO MODELS

MONITOR PERIOD OF CATALYST-DAMAGED-MISFIRE (MIL BLINKS): FOR MEXICO MODELS

Refer to CHECKING MONITOR STATUS. Refer to CHECKING MONITOR STATUS .

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Record the DTC(s) and freeze frame data.
5. Using the Techstream, switch the ECM from normal mode to check mode. Refer to «CHECK MODE PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-mode-procedure) .
6. Read the misfire counts of each cylinder (cylinder No. 1 to No. 8) with the engine idling. If any misfire count is displayed, skip the following confirmation driving pattern.
7. Drive the vehicle several times with the conditions, such as engine speed and engine load, shown in Misfire RPM and Misfire Load in the Data List. HINT: In order to store misfire DTCs, it is necessary to operate the vehicle for the period of time shown in the table below, with the Misfire RPM and Misfire Load in the Data List. Engine Speed Duration Idling 8 minutes or more 1000 4.5 minutes or more 2000 2.5 minutes or more 3000 1.5 minutes or more
8. Check whether misfires have occurred by checking DTCs and freeze frame data. HINT: Do not turn the engine switch off until the stored DTC(s) and freeze frame data have been recorded. When the ECM returns to normal mode (default), the stored DTC(s), freeze frame data and other data will be cleared.
9. Record the DTC(s), freeze frame data and misfire counts.
10. Turn the engine switch off and wait for at least 5 seconds.

Scheme 327

Scheme 328

Scheme 329

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

1. If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
3. If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions stored in the freeze frame data.
4. If the misfire still cannot be reproduced even though the conditions stored in the freeze frame data have been duplicated, one of the following factors is considered to be a possible cause of the problem: The fuel level is low. Improper fuel is used. The spark plugs are dirty.
5. After finishing repairs, check that no misfires occur in each cylinder (cylinder No. 1, No. 2, No. 3, No. 4, No. 5, No. 6, No. 7 and No. 8).
6. Be sure to confirm that no misfiring cylinder DTCs are output again by conducting the confirmation driving pattern after the repairs.
7. For 6 and 8 cylinder engines, the ECM intentionally does not store the specific misfiring cylinder DTCs at high engine speed. If misfires only occur during high engine speed driving, only DTC P0300 is stored. In the event of DTC P0300 being present, perform the following operations: Clear the DTC. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine and conduct the confirmation driving pattern. Read the misfiring rates of each cylinder or DTC(s) using the Techstream. Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC. After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC P0300 is not output.
8. When either Short FT #1, Long FT #1, Short FT #2 or Long FT #2 in the freeze frame data is outside the range of +/-20%, the air-fuel ratio may be rich (-20% or less) or lean (+20% or more).
9. When the Coolant Temp in the freeze frame data is below 75°C (167°F), the misfires occurred only while warming up the engine.
10. An extremely imbalanced drive wheel which causes body vibration may cause misfire DTCs detection.

Scheme 330

Scheme 331

Scheme 332

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE CODES) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 are output A P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and/or P0308 and other DTCs are output B HINT: If any DTCs other than P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 and P0308 are output, troubleshoot those DTCs first. B --> See step 35 A: Go to next step
2. CHECK PCV HOSE CONNECTIONS Check the PCV hose connections. OK PCV hose is connected correctly and is not damaged. NG --> See step 36 OK: Go to next step
3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire RPM and Misfire Load. Read and note the Misfire RPM and Misfire Load values. HINT: The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred. NEXT: Go to next step
4. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C. Read the value displayed on the Techstream. RESULT Data List Display Item Proceed to Catalyst OT MF F/C AVAIL (Avail) A NOT AVL (Not Avl) B B --> See step 6 A: Go to next step
5. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst OT Misfire prevent F/C. Perform the Active Test. NOTE: When performing the Active Test, make sure the vehicle is stopped and either idling or being revved within 3000 RPM. NEXT: Go to next step
6. READ VALUE USING TECHSTREAM (MISFIRE COUNT) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Enter the following menus: Powertrain / Engine and ECT / Data List / Cylinder #1 Misfire Count, #2, #3, #4, #5, #6, #7 and #8. Allow the engine to idle. Read each value for Cylinder #1 Misfire Count to #8 displayed on the Techstream. If no misfire counts occur in any cylinders, perform the following procedures: Move the shift lever to D. Check the Cylinder #1 Misfire Count to #8. If misfire counts are still not displayed, perform procedure "A" and "B" and then check the misfire counts again. Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above (Procedure "A"). Read the Cylinder #1 Misfire Count to #8 or DTCs displayed on the Techstream (Procedure "B"). RESULT Misfire Count Proceed to Most misfires occur in only 1 or 2 cylinders A 3 cylinders or more have equal misfire counts B HINT: If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal. If the freeze frame data record of the ECT is below 75°C (167°F), the misfire may be detected only when the engine is cold. If the freeze frame data record of the Engine Run Time is below 120 seconds, the misfire may be detected immediately after the engine is started. B --> See step 18 A: Go to next step
7. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Measure the spark plug electrode gap. Electrode gap for a new spark plug 1.0 to 1.1 mm (0.0394 to 0.0433 in.) Maximum electrode gap for a used spark plug 1.3 mm (0.0512 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG: Manufacturer Product DENSO SK20HR11 NOTE: If the electrode gap is greater than the maximum, replace the spark plug. Do not adjust the electrode gap. NG --> See step 37 OK: Go to next step
8. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
9. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 a5-1 - Body ground Always 10 kohms or higher a5-1 - C53-86 (#10) Always Below 1 ohms No. 2 a1-1 - Body ground Always 10 kohms or higher a1-1 - C53-109 (#20) Always Below 1 ohms No. 3 a6-1 - Body ground Always 10 kohms or higher a6-1 - C53-85 (#30) Always Below 1 ohms No. 4 a2-1 - Body ground Always 10 kohms or higher a2-1 - C53-108 (#40) Always Below 1 ohms No. 5 a7-1 - Body ground Always 10 kohms or higher a7-1 - C53-84 (#50) Always Below 1 ohms No. 6 a3-1 - Body ground Always 10 kohms or higher a3-1 - C53-107 (#60) Always Below 1 ohms No. 7 a8-1 - Body ground Always 10 kohms or higher a8-1 - C53-83 (#70) Always Below 1 ohms No. 8 a4-1 - Body ground Always 10 kohms or higher a4-1 - C53-106 (#80) Always Below 1 ohms NG --> See step 41 OK: Go to next step
11. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50, #60, #70 AND/OR #80 VOLTAGE) Disconnect the ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C53-86 (#10) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-109 (#20) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-85 (#30) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-108 (#40) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-84 (#50) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-107 (#60) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-83 (#70) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-106 (#80) - C53-43 (E01) Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
12. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 38 OK: Go to next step
13. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
14. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> See step 34 OK: Go to next step
15. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 40 OK: Go to next step
16. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 RPM. Standard Between 25.2 gm/s and 35.2 gm/s (shift lever: N; A/C: Off). NG --> See step 29 OK: Go to next step
17. CHECK VALVE TIMING See step 4 NG --> See step 39 OK: Go to next step
18. CHECK AIR INDUCTION SYSTEM Check the air induction system for vacuum leakage. Refer to «ON-VEHICLE INSPECTION - Step 4»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-intake-system-3ur-fe-inspection) . OK No leakage from air induction system. NG --> REPAIR OR REPLACE AIR INDUCTION SYSTEM OK: Go to next step
19. CHECK FUEL PRESSURE Check the fuel pressure. Refer to «ON-VEHICLE INSPECTION - Step 2»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-inspection) . NG --> See step 34 OK: Go to next step
20. READ VALUE USING TECHSTREAM (COOLANT TEMP) See step 5 NG --> See step 44 OK: Go to next step
21. READ VALUE USING TECHSTREAM (MAF) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF and Coolant Temp. Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher. Read MAF with the engine speed at 3000 RPM. Standard Between 25.2 gm/s and 35.2 gm/s (shift lever: N; A/C: Off). NG --> See step 29 OK: Go to next step
22. CHECK VALVE TIMING See step 4 NG --> See step 43 OK: Go to next step
23. CHECK SPARK PLUG Remove the ignition coil and the spark plug of the misfiring cylinder. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . Measure the spark plug electrode gap. Electrode gap for a new spark plug 1.0 to 1.1 mm (0.0394 to 0.0433 in.) Maximum electrode gap for a used spark plug 1.3 mm (0.0512 in.) Check the electrode for carbon deposits. RECOMMENDED SPARK PLUG: Manufacturer Product DENSO SK20HR11 NOTE: If the electrode gap is greater than the maximum, replace the spark plug. Do not adjust the electrode gap. NG --> See step 45 OK: Go to next step
24. CHECK FOR SPARKS AND IGNITION Perform a spark test. Refer to «ON-VEHICLE INSPECTION - Step 1»(/toyota/land-cruiser/200-2012-2015/remont/ignition-system/#ignition-system-3ur-fe-inspection) . HINT: If the result of the spark test is normal, proceed to the next step. NEXT: Go to next step
25. CHECK CYLINDER COMPRESSION PRESSURE Measure the cylinder compression pressure of the misfiring cylinder. Refer to «ON-VEHICLE INSPECTION - Step 3»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information) . NG --> CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION OK: Go to next step
26. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) Disconnect the fuel injector connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Cylinder Tester Connection Condition Specified Condition No. 1 a5-1 - Body ground Always 10 kohms or higher a5-1 - C53-86 (#10) Always Below 1 ohms No. 2 a1-1 - Body ground Always 10 kohms or higher a1-1 - C53-109 (#20) Always Below 1 ohms No. 3 a6-1 - Body ground Always 10 kohms or higher a6-1 - C53-85 (#30) Always Below 1 ohms No. 4 a2-1 - Body ground Always 10 kohms or higher a2-1 - C53-108 (#40) Always Below 1 ohms No. 5 a7-1 - Body ground Always 10 kohms or higher a7-1 - C53-84 (#50) Always Below 1 ohms No. 6 a3-1 - Body ground Always 10 kohms or higher a3-1 - C53-107 (#60) Always Below 1 ohms No. 7 a8-1 - Body ground Always 10 kohms or higher a8-1 - C53-83 (#70) Always Below 1 ohms No. 8 a4-1 - Body ground Always 10 kohms or higher a4-1 - C53-106 (#80) Always Below 1 ohms NG --> See step 46 OK: Go to next step
27. INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50, #60, #70 AND/OR #80 VOLTAGE) Disconnect the ECM connector. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C53-86 (#10) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-109 (#20) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-85 (#30) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-108 (#40) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-84 (#50) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-107 (#60) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-83 (#70) - C53-43 (E01) Engine switch on (IG) 11 to 14 V C53-106 (#80) - C53-43 (E01) Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
28. CHECK FUEL INJECTOR OF MISFIRING CYLINDER Check the injector injection [whether fuel volume is high or low, and whether injection pattern is poor]. Refer to «INSPECTION»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information) . NG --> See step 47 OK: Go to next step
29. CHECK HARNESS AND CONNECTOR Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter and ECM. Refer to «ELECTRONIC CIRCUIT INSPECTION PROCEDURE»(/toyota/land-cruiser/200-2012-2015/remont/hoistjack/#introduction) . HINT: Repair any problems. NEXT: Go to next step
30. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308. Check the DTC judgment result. Result Display (DTC Output) Proceed to ABNORMAL (P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 output) A NORMAL (No DTC output) B B --> END A: Go to next step
31. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) Disconnect the mass air flow meter connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C3-3 (VG) - C53-74 (VG) Always Below 1 ohms C3-2 (E2G) - C53-75 (E2G) Always Below 1 ohms C3-3 (VG) or C53-74 (VG) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
32. REPLACE MASS AIR FLOW METER ASSEMBLY Replace the mass air flow meter assembly. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . HINT: If the results of the inspections performed in steps 16 and 23 indicated no problem, proceed to the next step without replacing the mass air flow meter assembly. NEXT: Go to next step
33. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Turn the engine switch off. Turn the engine switch on (IG) and turn the Techstream on. Start the engine and warm it up. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness. Input the DTC: P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308. Check the DTC judgment result. Result Display (DTC Output) Proceed to NORMAL (No DTC output) A ABNORMAL (P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 output) B B --> See step 42 A --> END
34. CHECK FUEL LINE Check the fuel lines for leaks or blockage. NG --> REPAIR OR REPLACE FUEL LINE OK --> REPLACE FUEL PUMP
35. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__diagnostic-trouble-code-chart)
36. REPAIR OR REPLACE PCV HOSE. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
37. REPLACE SPARK PLUG. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
38. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)
39. ADJUST VALVE TIMING. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
40. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
41. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
42. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
43. ADJUST VALVE TIMING. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
44. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
45. REPLACE SPARK PLUG. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
46. GO TO FUEL INJECTOR CIRCUIT. Refer to «Fuel Injector Circuit»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-p1604-p2610-circuit-tests)
47. REPLACE FUEL INJECTOR ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/fuel-system/#fuel-system-3ur-fe-service-information__removal)

A flat type knock sensor (non-resonant type) has a structure that can detect vibrations between approximately 5 kHz and 15 kHz.

Knock sensors are fitted onto the engine block to detect engine knocking.

The knock sensor contains a piezoelectric element which generates a voltage when it becomes deformed.

The voltage is generated when the engine block vibrates due to knocking. Any occurrence of engine knocking can be suppressed by delaying the ignition timing.

HINT

When any of DTCs P0327, P0328, P0332, P0333, P032C, P032D, P033C and P033D is stored, the ECM enters fail-safe mode. During fail-safe mode, the ignition timing is delayed to its maximum retardation. Fail-safe mode continues until the engine switch is turned off.

Reference: Inspection using an oscilloscope

Scheme 333

Standard

The knock sensor, located on the cylinder block, detects spark knock. When spark knock occurs, the piezoelectric element of the sensor vibrates. When the ECM detects a voltage in this frequency range, it retards the ignition timing to suppress the spark knock.

The ECM also senses background engine noise with the knock sensor and uses this noise to check for faults in the sensor. If the knock sensor signal level is too low for more than 10 seconds, or if the knock sensor output voltage is outside the normal range, the ECM interprets this as a fault in the knock sensor and stores DTC(s).

KNOCK SENSOR RANGE CHECK (LOW VOLTAGE) P0327, P0332, P032C AND P033C

KNOCK SENSOR RANGE CHECK (HIGH VOLTAGE) P0328, P0333, P032D AND P033D

Scheme 334

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine and wait 10 seconds.
7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10. Input the DTC: P0327, P0328, P032C, P032D, P0332, P0333, P033C or P033D.
11. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, idle the engine for 5 minutes and check the DTC judgment result again [C].
12. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 335

HINT

1. DTCs P0327 and P0328 are for the bank 1 sensor 1 knock sensor circuit.
2. DTCs P032C and P032D are for the bank 1 sensor 2 knock sensor circuit.
3. DTCs P0332 and P0333 are for the bank 2 sensor 1 knock sensor circuit.
4. DTCs P033C and P033D are for the bank 2 sensor 2 knock sensor circuit.
5. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
6. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
7. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 336

Scheme 337

Scheme 338

1. INSPECT KNOCK SENSOR Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C53-94 (KNK1) - C53-93 (EKNK) 20°C (68°F) 120 to 280 kohms C53-117 (KNK2) - C53-116 (EKN2) 20°C (68°F) 120 to 280 kohms C53-96 (KNK3) - C53-95 (EKN3) 20°C (68°F) 120 to 280 kohms C53-119 (KNK4) - C53-118 (EKN4) 20°C (68°F) 120 to 280 kohms RESULT Result Proceed to NG A OK B B --> See step 3 A: Go to next step
2. CHECK HARNESS AND CONNECTOR (ECM - KNOCK SENSOR) Disconnect the ECM connector. Disconnect the knock sensor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U5-2 - C53-94 (KNK1) Always Below 1 ohms U5-1 - C53-93 (EKNK) Always Below 1 ohms U6-2 - C53-117 (KNK2) Always Below 1 ohms U6-1 - C53-116 (EKN2) Always Below 1 ohms U7-2 - C53-96 (KNK3) Always Below 1 ohms U7-1 - C53-95 (EKN3) Always Below 1 ohms U8-2 - C53-119 (KNK4) Always Below 1 ohms U8-1 - C53-118 (EKN4) Always Below 1 ohms U5-2 or C53-94 (KNK1) - Body ground Always 10 kohms or higher U5-1 or C53-93 (EKNK) - Body ground Always 10 kohms or higher U6-2 or C53-117 (KNK2) - Body ground Always 10 kohms or higher U6-1 or C53-116 (EKN2) - Body ground Always 10 kohms or higher U7-2 or C53-96 (KNK3) - Body ground Always 10 kohms or higher U7-1 or C53-95 (EKN3) - Body ground Always 10 kohms or higher U8-2 or C53-119 (KNK4) - Body ground Always 10 kohms or higher U8-1 or C53-118 (EKN4) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
3. INSPECT ECM Disconnect the knock sensor connectors. Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition U5-1 - U5-2 Engine switch on (IG) 4.5 to 5.5 V U6-1 - U6-2 Engine switch on (IG) 4.5 to 5.5 V U7-1 - U7-2 Engine switch on (IG) 4.5 to 5.5 V U8-1 - U8-2 Engine switch on (IG) 4.5 to 5.5 V NG --> See step 4 OK --> See step 5
4. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
5. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
6. REPLACE KNOCK SENSOR. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The crankshaft position (CKP) sensor system consists of a crankshaft position sensor plate and Magnetic Resistance Element (MRE) type sensor. The crankshaft position sensor plate has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed to the rear end of the crankshaft. The crankshaft position sensor outputs 34 rotation signals per crankshaft revolution. The ECM uses the G2 signal to distinguish between the cylinders, and uses the NE signal to detect the crankshaft position and engine speed.

Scheme 339

1. Reference: Inspection using an oscilloscope. Standard Tester Connection Tool Setting Condition Specified Condition C53-110 (NE+) - C53-111 (NE-) 5 V/DIV., 20 msec./DIV. Cranking or idling The correct waveform is as shown C53-90 (G2) - C53-89 (G2-) 5 V/DIV., 20 msec./DIV. Cranking or idling The correct waveform is as shown HINT: G2 stands for the camshaft position sensor signal, and NE stands for the crankshaft position sensor signal.

If there is no signal from the crankshaft position sensor despite the crankshaft revolving, the ECM interprets this as a malfunction of the sensor.

When the sensor output voltage remains at less than 0.3 V, or more than 4.7 V for more than 4 seconds, the ECM stores DTC(s).

ALL

P0335 Crankshaft Position Sensor Verify Pulse Input

CASE 1

CASE 2

P0337, P0038 CRANKSHAFT POSITION SENSOR RANGE CHECK (LOW VOLTAGE, HIGH VOLTAGE)

P0335 CRANKSHAFT POSITION SENSOR VERIFY PULSE INPUT

P0337 CRANKSHAFT POSITION SENSOR RANGE CHECK (LOW VOLTAGE)

P0338 CRANKSHAFT POSITION SENSOR RANGE CHECK (HIGH VOLTAGE)

Scheme 340

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 20 seconds or more [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0335, P0337, P0338 or P0339.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 341

HINT

1. If no problem is found by this diagnostic troubleshooting procedure, check for problems by referring to the engine mechanical information.
2. The engine speed can be checked by using the Techstream. To check, follow the procedures below: Connect the Techstream to the DLC3. Start the engine. Turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed. The engine speed may be indicated as zero despite the engine running normally. This is caused by a lack of NE signals from the crankshaft position (CKP) sensor. Alternatively, the engine speed may be indicated as less than the actual engine speed, if the CKP sensor output voltage is insufficient.
3. Read freeze frame data using the Techstream. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 342

Scheme 343

Scheme 344

Scheme 345

1. READ VALUE USING TECHSTREAM (ENGINE SPEED) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Engine Speed. Start the engine. Read the values displayed on the Techstream while the engine is running. Standard Correct values are displayed. HINT: To check the engine speed change, display the graph on the Techstream. If the engine does not start, check the engine speed while cranking. If the engine speed indicated on the Techstream remains zero (0), there may be an open or short in the Crankshaft Position (CKP) sensor circuit. NG --> See step 2 OK --> See step 11
2. INSPECT CRANKSHAFT POSITION SENSOR (SENSOR POWER SOURCE) Disconnect the crankshaft position sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C1-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V NG --> See step 8 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-1 (NE+) - C53-110 (NE+) Always Below 1 ohms C1-2 (NE-) - C53-111 (NE-) Always Below 1 ohms C1-1 (NE+) or C53-110 (NE+) - Body ground Always 10 kohms or higher C1-2 (NE-) or C53-111 (NE-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR) Check the crankshaft position sensor installation. OK Sensor is installed correctly. NG --> See step 9 OK: Go to next step
5. CHECK CRANKSHAFT POSITION SENSOR PLATE (TEETH OF SENSOR PLATE) Check the teeth of the sensor plate. OK Sensor plate does not have any cracks or deformation. NG --> REPLACE CRANKSHAFT POSITION SENSOR PLATE OK: Go to next step
6. REPLACE CRANKSHAFT POSITION SENSOR Replace the crankshaft position sensor. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0335, P0337, P0338 AND/OR P0339) Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0335, P0337, P0338 and/or P0339 B HINT: If the engine does not start, replace the ECM. B --> See step 12 A --> END
8. CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM) Disconnect the crankshaft position sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C1-3 (VC) - C53-66 (VCV2) Always Below 1 ohms C1-3 (VC) or C53-66 (VCV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 10
9. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
10. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
11. CHECK FOR INTERMITTENT PROBLEMS. Refer to «CHECK FOR INTERMITTENT PROBLEMS»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__check-for-intermittent-problems)
12. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The intake camshaft Variable Valve Timing (VVT) sensor (VV1, 2 signal) consists of a magnet and MRE (Magnetic Resistance Element).

The intake camshaft has 3 teeth on its outer circumference. When the intake camshaft rotates, changes occur in the air gaps between teeth and MRE, which affect the magnetic field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the intake camshaft rotation data into pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.

The crankshaft position sensor plate has 34 teeth. The crankshaft position sensor generates 34 signals for each crankshaft revolution. Based on a combination of the VVT signal and NE signal, the ECM detects the crankshaft angle. Then the ECM uses this data to control fuel injection time and injection timing. Also, based on the NE signal, the ECM detects the engine speed.

Scheme 346

1. Reference: Inspection using an oscilloscope Standard Tester Connection Tool Setting Condition Specified Condition C53-110 (NE+) - C53-111 (NE-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown C53-92 (VV1+) - C53-91 (VV1-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown C53-87 (VV2+) - C53-88 (VV2-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown HINT: VV1+ and VV2+ stand for the VVT sensor (for intake side) signal, and NE+ stands for the CKP sensor signal.

If no signal is transmitted by the VVT sensor despite the camshaft revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

ALL

P0340, P0345 (VERIFY PULSE INPUT)

P0342, P0343, P0347, P0348 (LOW VOLTAGE, HIGH VOLTAGE)

P0340, P0345 (VERIFY PULSE INPUT)

P0342, P0347 (LOW VOLTAGE)

P0343, P0348 (HIGH VOLTAGE)

Scheme 347

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 10 seconds or more [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0340, P0342, P0343, P0345, P0347 or P0348.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 348

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 349

Scheme 350

Scheme 351

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the VVT sensor connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C20-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V C21-3 (VC) - Body ground Engine switch on (IG) 4.5 to 5.5 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR FOR INTAKE SIDE - ECM) Disconnect the VVT sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C20-1 (VVL+) - C53-92 (VV1+) Always Below 1 ohms C20-2 (VVL-) - C53-91 (VV1-) Always Below 1 ohms C21-1 (VVR+) - C53-87 (VV2+) Always Below 1 ohms C21-2 (VVR-) - C53-88 (VV2-) Always Below 1 ohms C20-1 (VVL+) or C53-92 (VV1+) - Body ground Always 10 kohms or higher C20-2 (VVL-) or C53-91 (VV1-) - Body ground Always 10 kohms or higher C21-1 (VVR+) or C53-87 (VV2+) - Body ground Always 10 kohms or higher C21-2 (VVR-) or C53-88 (VV2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION Check the VVT sensor (to intake side) installation. OK Sensor is installed correctly. NG --> See step 8 OK: Go to next step
4. CHECK INTAKE CAMSHAFT (TEETH) Check the teeth of the camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 7 OK: Go to next step
5. REPLACE VVT SENSOR (for Intake Side) Replace the VVT sensor (for Intake Side). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear the DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0340, P0342, P0343, P0345, P0347 or P0348 B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. REPLACE INTAKE CAMSHAFT. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
8. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

HINT

1. These DTCs indicate malfunctions relating to the primary circuit.
2. If DTC P0351 is output, check the No. 1 ignition coil circuit.
3. If DTC P0352 is output, check the No. 2 ignition coil circuit.
4. If DTC P0353 is output, check the No. 3 ignition coil circuit.
5. If DTC P0354 is output, check the No. 4 ignition coil circuit.
6. If DTC P0355 is output, check the No. 5 ignition coil circuit.
7. If DTC P0356 is output, check the No. 6 ignition coil circuit.
8. If DTC P0357 is output, check the No. 7 ignition coil circuit.
9. If DTC P0358 is output, check the No. 8 ignition coil circuit.

A Direct Ignition System (DIS) is used on this vehicle.

The DIS is a 1-cylinder ignition system in which each cylinder is ignited by one ignition coil and one spark plug is connected to the end of each secondary wiring. A powerful voltage, generated in the secondary wiring, is applied directly to each spark plug. The sparks of the spark plugs pass from the center electrode to the ground electrodes.

The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches on and off the current to the primary coil. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM for each cylinder ignition.

Scheme 352

1. Reference: Inspection using an oscilloscope.
2. Standard Tester Connection Tool Setting Condition Specified Condition C53-40 (IGT1) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-33 (IGT2) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-37 (IGT3) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-34 (IGT4) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-35 (IGT5) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-36 (IGT6) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-38 (IGT7) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-39 (IGT8) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-104 (IGF1) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown C53-105 (IGF2) - C53-81 (E1) 2 V/DIV., 20 msec./DIV. Idling The correct waveform is as shown HINT: While cranking or idling the engine, check the waveform between terminals IGT (1 to 8) and E1, and IGF1 or IGF2 and E1 of the ECM connector.

Scheme 353

If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and stores DTC(s).

If the malfunction is not repaired successfully, a DTC is stored 1 second after the engine is next started.

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 10 seconds [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0351, P0352, P0353, P0354, P0355, P0356, P0357 or P0358.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT

Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 354

Scheme 355

1. INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE) Disconnect the ignition coil connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-4 (GND) - Body ground Always Below 1 ohms C13-4 (GND) - Body ground Always Below 1 ohms C6-4 (GND) - Body ground Always Below 1 ohms C12-4 (GND) - Body ground Always Below 1 ohms C7-4 (GND) - Body ground Always Below 1 ohms C11-4 (GND) - Body ground Always Below 1 ohms C8-4 (GND) - Body ground Always Below 1 ohms C10-4 (GND) - Body ground Always Below 1 ohms Turn the engine switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C5-1 (+B) - C5-4 (GND) Engine switch on (IG) 11 to 14 V C13-1 (+B) - C13-4 (GND) Engine switch on (IG) 11 to 14 V C6-1 (+B) - C6-4 (GND) Engine switch on (IG) 11 to 14 V C12-1 (+B) - C12-4 (GND) Engine switch on (IG) 11 to 14 V C7-1 (+B) - C7-4 (GND) Engine switch on (IG) 11 to 14 V C11-1 (+B) - C11-4 (GND) Engine switch on (IG) 11 to 14 V C8-1 (+B) - C8-4 (GND) Engine switch on (IG) 11 to 14 V C10-1 (+B) - C10-4 (GND) Engine switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (IGNITION COIL ASSEMBLY - ECM) Disconnect the ignition coil connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C5-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C13-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C6-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C12-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C7-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C11-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C8-2 (IGF1) - C53-104 (IGF1) Always Below 1 ohms C10-2 (IGF2) - C53-105 (IGF2) Always Below 1 ohms C5-3 (IGT1) - C53-40 (IGT1) Always Below 1 ohms C13-3 (IGT2) - C53-33 (IGT2) Always Below 1 ohms C6-3 (IGT3) - C53-37 (IGT3) Always Below 1 ohms C12-3 (IGT4) - C53-34 (IGT4) Always Below 1 ohms C7-3 (IGT5) - C53-35 (IGT5) Always Below 1 ohms C11-3 (IGT6) - C53-36 (IGT6) Always Below 1 ohms C8-3 (IGT7) - C53-38 (IGT7) Always Below 1 ohms C10-3 (IGT8) - C53-39 (IGT8) Always Below 1 ohms C5-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C13-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C6-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C12-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C7-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C11-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C8-2 (IGF1) or C53-104 (IGF1) - Body ground Always 10 kohms or higher C10-2 (IGF2) or C53-105 (IGF2) - Body ground Always 10 kohms or higher C5-3 (IGT1) or C53-40 (IGT1) - Body ground Always 10 kohms or higher C13-3 (IGT2) or C53-33 (IGT2) - Body ground Always 10 kohms or higher C6-3 (IGT3) or C53-37 (IGT3) - Body ground Always 10 kohms or higher C12-3 (IGT4) or C53-34 (IGT4) - Body ground Always 10 kohms or higher C7-3 (IGT5) or C53-35 (IGT5) - Body ground Always 10 kohms or higher C11-3 (IGT6) or C53-36 (IGT6) - Body ground Always 10 kohms or higher C8-3 (IGT7) or C53-38 (IGT7) - Body ground Always 10 kohms or higher C10-3 (IGT8) or C53-39 (IGT8) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357 OR P0358) Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Shuffle the arrangement of the ignition coils (among No. 1 to No. 8 cylinders). NOTE: Do not shuffle the connectors. Refer to the confirmation driving pattern. Check DTCs displayed on the Techstream. RESULT Result Proceed to Same DTC is output A Different ignition coil DTC is output B B --> See step 4 A --> See step 5
4. REPLACE IGNITION COIL ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
5. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The exhaust camshaft Variable Valve Timing (VVT) sensor (EV1, 2 signal) consists of a magnet and MRE (Magnetic Resistance Element).

The exhaust camshaft has 3 teeth on its outer circumference. When the exhaust camshaft rotates, changes occur in the air gaps between the teeth and MRE, which affect the magnet. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the exhaust camshaft rotation data into pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the ECM.

Scheme 356

1. Reference: Inspection using an oscilloscope Standard Tester Connection Tool Setting Condition Specified Condition C53-110 (NE+) - C53-111 (NE-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown C53-69 (EV1+) - C53-68 (EV1-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown C53-64 (EV2+) - C53-65 (EV2-) 5 V/DIV. 20 msec./DIV. Cranking or idling The correct waveform is as shown HINT: EV1+ and EV2+ stand for the VVT sensor (for exhaust side) signal, and NE+ stands for the CKP sensor signal.

If no signal is transmitted by the VVT sensor despite the camshaft revolving, or the rotations of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the sensor.

ALL

P0365, P0390 (VERIFY PULSE INPUT)

P0367, P0368, P0392, P0393 (LOW VOLTAGE, HIGH VOLTAGE)

P0365, P0390 (VERIFY PULSE INPUT)

P0367, P0392 (LOW VOLTAGE)

P0368, P0393 (HIGH VOLTAGE)

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on [A].
6. Start the engine.
7. Idle the engine for 10 seconds [B].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9. Read the DTCs. HINT: If a DTC is output, the system is malfunctioning. If a DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0365, P0367, P0368, P0390, P0392 or P0393.
12. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit HINT: If the judgment result shows ABNORMAL, the system has a malfunction. If the judgment result shows INCOMPLETE or N/A, perform steps [B] and [C] again.
13. If no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If a permanent DTC is output, the system is malfunctioning. If no permanent DTC is output, the system is normal.

Scheme 357

HINT

1. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
2. Bank 1 refers to the bank that includes the No. 1 cylinder*. *: The No. 1 cylinder is the cylinder which is farthest from the transmission.
3. Bank 2 refers to the bank that does not include the No. 1 cylinder.

Scheme 358

Scheme 359

Scheme 360

1. CHECK HARNESS AND CONNECTOR (SENSOR POWER SOURCE) Disconnect the VVT sensor (for exhaust side) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition C22-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.5 V C23-3 (VC2) - Body ground Engine switch on (IG) 4.5 to 5.5 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (VVT SENSOR (for Exhaust Side) - ECM) Disconnect the VVT (for exhaust side) sensor connector. Disconnect the ECM connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C22-1 (EX+) - C53-69 (EV1+) Always Below 1 ohms C22-2 (EX-) - C53-68 (EV1-) Always Below 1 ohms C23-1 (EX+) - C53-64 (EV2+) Always Below 1 ohms C23-2 (EX-) - C53-65 (EV2-) Always Below 1 ohms C22-1 (EX+) or C53-69 (EV1+) - Body ground Always 10 kohms or higher C22-2 (EX-) or C53-68 (EV1-) - Body ground Always 10 kohms or higher C23-1 (EX+) or C53-64 (EV2+) - Body ground Always 10 kohms or higher C23-2 (EX-) or C53-65 (EV2-) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK SENSOR INSTALLATION Check the VVT sensor (for exhaust side) installation. OK Sensor is installed correctly. NG --> See step 7 OK: Go to next step
4. CHECK EXHAUST CAMSHAFT Check the teeth of the camshaft. OK Teeth do not have any cracks or deformation. NG --> See step 8 OK: Go to next step
5. REPLACE VVT SENSOR (for Exhaust Side) Replace the VVT sensor (for exhaust side). Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information) . NEXT: Go to next step
6. CHECK WHETHER DTC OUTPUT RECURS Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Clear DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . Start the engine. Refer to the confirmation driving pattern. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes. Read DTCs. RESULT Result Proceed to No output A P0365, P0367, P0368, P0390, P0392 or P0393 B HINT: If the engine does not start, replace the ECM. B --> See step 9 A --> END
7. SECURELY REINSTALL SENSOR. Refer to «INSTALLATION»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)
8. REPLACE EXHAUST CAMSHAFT. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/mechanical/#engine-mechanical-3ur-fe-service-information)
9. REPLACE ECM. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/engine-control-systems/#engine-control-system-service-information)

The Secondary Air Injection (AIR) system consists of an air pump, the Air Switching Valve (ASV), a pressure sensor, the Air Injection Control Driver (AID) and the ECM. For a short time after a cold engine start, the AIR system pumps secondary air to the exhaust port of the cylinder head to purify the exhaust emissions. The secondary air is supplied by the air pump and is pumped to the exhaust port through the ASV.

The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits a pressure signal to the ECM.

The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect malfunctions in the AIR system circuit.

HINT

As a large current is required to drive the air pump and ASV, an AID is installed to this system.

Scheme 361

The Air Injection Control Driver (AID) detects open and short circuits according to the voltages of the air pump terminal (VP) and the Air Switching Valve (ASV) terminal (VV), and transmits diagnostic information as a signal to the ECM.

For a short time after a cold engine start, the ECM transmits command signals to the AID to drive the air pump and ASV.

The AID transmits an ASV malfunction signal to the ECM if either of the following conditions is met

1. The voltage at the AID terminal relating to the ASV is low despite the AID receiving command signals from the ECM to drive the ASV.
2. The voltage at the AID terminal relating to the ASV is high despite the AID receiving no command signals from the ECM to drive the ASV.

The ECM stores the DTC based on diagnostic signals from the AID.

CASE 1

CASE 2

Scheme 362

Note. This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While AIR system operation using the Techstream is prohibited, the Techstream display indicates the prohibition (WAIT or ERROR). If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then try again. Performing the Secondary Air Injection Check repeatedly may cause damage to the AIR system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating. When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the engine switch turned on (IG) or the engine running. Turn the engine switch off when the Secondary Air Injection Check operation finishes.

1. Start the engine and warm it up.
2. Turn the engine switch off.
3. Connect the Techstream to the DLC3.
4. Turn the engine switch on (IG).
5. Turn the Techstream on.
6. Clear the DTCs (if set). Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) .
7. Turn the engine switch off and wait for at least 30 seconds.
8. Turn the engine switch on (IG) and turn the Techstream on [A].
9. Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check / Automatic Mode.
10. Start the engine after the Techstream initialization is finished.
11. Perform the System Check operation by pressing ENTER (Next).
12. After operating the AIR system, perform the following to confirm the AIR system pending codes: Press the ENTER (Exit).
13. Check DTCs [B]. OK No DTC is output.
14. After the "Secondary Air Injection Check" is completed, check for All Readiness by entering the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
15. Input the DTC: P0412 or P0415.
16. Check the DTC judgment result. Tester Display Description NORMAL DTC judgment completed System normal ABNORMAL DTC judgment completed System abnormal INCOMPLETE DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions N/A Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit HINT: If the judgment result shows NORMAL, the system is normal. If the judgment result shows ABNORMAL, the system has a malfunction.
17. If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to «DTC CHECK / CLEAR»(/toyota/land-cruiser/200-2012-2015/remont/testing-diagnostics/#engine-control-system-3ur-fe-diagnostics-introduction__dtc-check-clear) . HINT: If no permanent DTC is output, the system is normal. If a permanent DTC is output, the system is malfunctioning.
18. Turn the engine switch off.

Scheme 363

Scheme 364

HINT

1. By using the Techstream to perform the Air Injection Check operation in the System Check, the air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions.
2. Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

Scheme 365

Scheme 366

Scheme 367

1. INSPECT AIR SWITCHING VALVE ASSEMBLY Disconnect the air switching valve (ASV) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-5 (+B) - C35-1 (GND) 20°C (68°F) 4.5 to 5.5 ohms C36-5 (+BL) - C36-1 (GNDL) 20°C (68°F) 4.5 to 5.5 ohms NG --> See step 4 OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - BODY GROUND) Disconnect the ASV connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-1 (GND) - Body ground Always Below 1 ohms C36-1 (GNDL) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - AIR INJECTION CONTROL DRIVER) Disconnect the ASV connector. Disconnect the AID connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C35-5 (+B) - C30-6 (VV) Always Below 1 ohms C36-5 (+BL) - C32-6 (VV2) Always Below 1 ohms C35-5 (+B) or C30-6 (VV) - Body ground Always 10 kohms or higher C36-5 (+BL) or C32-6 (VV2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 5
4. REPLACE AIR SWITCHING VALVE ASSEMBLY. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)
5. REPLACE AIR INJECTION CONTROL DRIVER. Refer to «REMOVAL»(/toyota/land-cruiser/200-2012-2015/remont/auxiliary-emission-control-systems/#emission-control-system-3ur-fe-service-information)

See also:
• DTC CHECK / CLEAR
• CHECK FOR INTERMITTENT PROBLEMS
• REMOVAL
• REMOVAL
• CHECKING MONITOR STATUS
• DATA LIST / ACTIVE TEST
• DISASSEMBLY
• DIAGNOSTIC TROUBLE CODE CHART
• DESCRIPTION
• ON-VEHICLE INSPECTION - Step 4
• REMOVAL
• REMOVAL
• DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2)
• READINESS MONITOR DRIVE PATTERN
• ON-VEHICLE INSPECTION - Step 2
• ON-VEHICLE INSPECTION - Step 1
• INSPECTION
• REMOVAL
• CHECK MODE PROCEDURE
• ELECTRONIC CIRCUIT INSPECTION PROCEDURE
• WIRING DIAGRAM
• WIRING DIAGRAM