Toyota Tundra (2015 year). Manual — part 1636
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.
6.
With the vehicle stationary, fully depress the accelerator pedal and quickly release it [B].
7.
Check that 16 seconds or more have elapsed from the instant when the accelerator pedal is first
depressed.
8.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [C].
9.
Read the pending DTC.
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: P2102 or P2103.
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: P2102,P210...
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 [C] again.
14.
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.
15.
FAIL-SAFE
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 ignition switch is then turned OFF.
WIRING DIAGRAM
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.
The throttle actuator current (Throttle Motor Current) and the throttle actuator duty ratio (Throttle
Motor Duty (Open) / Throttle Motor Duty (Close)) can be read using the Techstream. However, the ECM
shuts off the throttle actuator current when the ETCS malfunctions.
PROCEDURE
1.
INSPECT THROTTLE BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2102,P210...
OK
OK
(a) Disconnect the D9 throttle body assembly connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
2 (M+) - 1 (M-)
20°C (68°F)
0.3 to 100 Ω
NG
REPLACE THROTTLE BODY ASSEMBLY
2.
CHECK HARNESS AND CONNECTOR (THROTTLE ACTUATOR - ECM)
(a) Disconnect the D9 throttle body assembly connector.
(b) Disconnect the D74 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D9-2 (M+) - D74-19 (M+)
Always
Below 1 Ω
D9-1 (M-) - D74-18 (M-)
Always
Below 1 Ω
D9-2 (M+) or D74-19 (M+) - Body ground
Always
10 kΩ or higher
D9-1 (M-) or D74-18 (M-) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
3.
INSPECT THROTTLE BODY ASSEMBLY
(a) Check for foreign objects between the throttle valve and the housing.
OK:
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2102,P210...
OK
No foreign objects between throttle valve and housing.
NG
REMOVE FOREIGN OBJECT AND CLEAN
THROTTLE BODY ASSEMBLY
4.
INSPECT THROTTLE VALVE
(a) Check if the throttle valve opens and closes smoothly.
OK:
Throttle valve opens and closes smoothly.
NG
REPLACE THROTTLE BODY ASSEMBLY
OK
REPLACE ECM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2102,P210...
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