Toyota Tundra (2015 year). Manual — part 1534
P0102, P0103 (Mass air flow meter)
P0115, P0117, P0118 (Engine coolant temperature sensor)
P0125 (Insufficient coolant temperature for closed loop fuel
control)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135
(Throttle position sensor)
P0335 (Crankshaft position sensor)
P1340 (Camshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351 - P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0412, P0415, P0418, P0419, P1613, P1614 (Secondary air
injection system control)
P2440 - P2447 (Secondary air injection system)
P0500 (Vehicle speed sensor)
Fuel system status
Closed loop
Battery voltage
11 V or more
1. Engine speed
Below 1100 rpm
2. Engine load
10% or more
Catalyst monitor
Not executed
Ethanol content learning
Not executed
Refuel with small amount or on an
incline
Not executed
Lubrication oil dilution by fuel
Not judged
TYPICAL MALFUNCTION THRESHOLDS
Purge-cut
Executing
CONFIRMATION DRIVING PATTERN
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P017...
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on [A].
5.
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].
6.
With the engine warmed up, idle the engine for 2 minutes or more [C].
7.
Drive the vehicle at a speed between 60 km/h and 120 km/h (38 mph and 75 mph) and at an
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
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: P0171, P0172, P0174 or P0175.
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
13.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P017...
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
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.
If no pending DTC is output, perform a universal trip and check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
14.
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.
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.
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.
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.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
Sensor 1 refers to the sensor closest to the engine assembly.
Sensor 2 refers to the sensor farthest away from the engine assembly.
PROCEDURE
1.
CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0171, P0172,
P0174 OR P0175)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) 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
GO TO DTC CHART
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P017...
A
NEXT
NEXT
2.
READ VALUE USING TECHSTREAM (ALCOHOL DENSITY ESTIMATE, SHORT FT,
LONG FT) [STEP *1]
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving
Pattern.
(e) Make sure that the Data List item "Alcohol Density Learning" is "Compl".
(f) Enter the following menus: Powertrain / Engine and ECT / Data List / Alcohol Density Estimate,
Short FT and Long FT.
(g) Check the data list values, and then write them down.
3.
CONFIRM ALCOHOL CONCENTRATION IN FUEL [STEP *2]
(a) Confirm the alcohol concentration in the fuel
.
(b) Write down the alcohol concentration in the fuel.
4.
CONFIRM LEARNED VALUE
(a) Use the following formula to calculate the difference between the learned values from step *1
and the actual alcohol concentration in the fuel from step *2.
HINT:
| ((Alcohol Density Estimate / 2) + Short FT + Long FT) - (Alcohol Concentration in Fuel / 2) | < 35%
Result
RESULT
PROCEED TO
Difference is 35% or more
A
Difference is less than 35%
B
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0171,P017...
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