Toyota Tundra (2015 year). Manual — part 1139
OK
NEXT
NEXT
(a) Disconnect the HO2 sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION SPECIFIED CONDITION
D31-1 (HT1B) - D74-45 (HT1B)
Always
Below 1 Ω
D31-3 (OX1B) - D74-114 (OX1B)
Always
Below 1 Ω
D31-4 (E1) - D74-115 (EX1B)
Always
Below 1 Ω
D32-1 (HT2B) - D74-44 (HT2B)
Always
Below 1 Ω
D32-3 (OX2B) - D74-112 (OX2B)
Always
Below 1 Ω
D32-4 (E1) - D74-113 (EX2B)
Always
Below 1 Ω
D31-1 (HT1B) or D74-45 (HT1B) - Body ground
Always
10 kΩ or higher
D31-3 (OX1B) or D74-114 (OX1B) - Body ground
Always
10 kΩ or higher
D32-1 (HT2B) or D74-44 (HT2B) - Body ground
Always
10 kΩ or higher
D32-3 (OX2B) or D74-112 (OX2B) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
11.
REPLACE HEATED OXYGEN SENSOR
(a) Replace the heated oxygen sensor
.
HINT:
Perform "Inspection After Repair" after replacing the heated oxygen sensor
.
12.
PERFORM CONFIRMATION DRIVING PATTERN
(a) Perform the Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158).
13.
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158 IS
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0136-P0139,...
A
OUTPUT AGAIN)
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(d) Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158.
(e) Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern increasing the
vehicle speed.
Result
RESULT
PROCEED TO
ABNORMAL
(DTC P0136, P0137, P0138, P0156, P0157 or P0158 is output)
A
NORMAL
(DTC is not output)
B
B
END
14.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)
(a) Connect the Techstream to the DLC3.
(b) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
HINT:
When performing the Active Test, make sure the shift lever is in P or N.
The A/C switch and all accessory switches should be off.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.
(e) Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while
performing the Active Test.
HINT:
Do not leave the EGR valve open for 10 seconds or more during the Active Test.
Be sure to return the EGR valve to step 0 when the Active Test is completed.
OK:
MAP and idling condition change in response to EGR step position as follows.
Standard:
-
EGR STEP POSITION (ACTIVE TEST)
0 STEPS
0 TO 30 STEPS
Idling
condition
Steady idling
Idling changes from steady to rough idling or engine stall
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0136-P0139,...
NEXT
NEXT
-
EGR STEP POSITION (ACTIVE TEST)
0 STEPS
0 TO 30 STEPS
MAP
(Data List)
20 to 40 kPa (150 to 300
mmHg)
MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully
closed
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor
.
NG
GO TO STEP 15
OK
REPLACE AIR FUEL RATIO SENSOR
15.
INSPECT EGR VALVE ASSEMBLY
(a) Remove the EGR valve assembly
.
(b) Check if the EGR valve is stuck open.
OK:
EGR valve is tightly closed.
HINT:
Perform "Inspection After Repair" after replacing the EGR valve assembly or air fuel ratio sensor
.
NG
REPLACE EGR VALVE ASSEMBLY
OK
REPLACE AIR FUEL RATIO SENSOR
16.
REPLACE AIR FUEL RATIO SENSOR
(a) Replace the air fuel ratio sensor
.
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor
.
17.
PERFORM CONFIRMATION DRIVING PATTERN
(a) Perform the Confirmation Driving Pattern (P0136, P0137, P0138, P0156, P0157 and P0158).
18.
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136, P0137, P0138, P0156, P0157 OR P0158 IS
OUTPUT AGAIN)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0136-P0139,...
A
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(d) Input DTCs: P0136, P0137, P0138, P0156, P0157 and P0158.
(e) Check that the DTC monitor is NORMAL. If the DTC monitor is INCOMPLETE, perform the drive pattern increasing the
vehicle speed.
Result
RESULT
PROCEED TO
ABNORMAL
(DTC P0136, P0137, P0138, P0156, P0157 or P0158 is output)
A
NORMAL
(DTC is not output)
B
B
END
19.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)
(a) Connect the Techstream to the DLC3.
(b) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
HINT:
When performing the Active Test, make sure the shift lever is in P or N.
The A/C switch and all accessory switches should be off.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.
(e) Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the Data List while
performing the Active Test.
HINT:
Do not leave the EGR valve open for 10 seconds or more during the Active Test.
Be sure to return the EGR valve to step 0 when the Active Test is completed.
OK:
MAP and idling condition change in response to EGR step position as follows.
Standard:
-
EGR STEP POSITION (ACTIVE TEST)
0 STEPS
0 TO 30 STEPS
Idling
condition
Steady idling
Idling changes from steady to rough idling or engine stall
MAP
(Data List)
20 to 40 kPa (150 to 300
mmHg)
MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully
closed
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0136-P0139,...
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