Toyota Tundra (2015 year). Manual — part 2013
INSPECTION PROCEDURE
HINT:
These DTCs relate to the Accelerator Pedal Position (APP) sensor.
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.
PROCEDURE
1.
READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream
on.
(c) Enter the following menus: Powertrain / Engine and ECT
/ Data List / ETCS / Accel Sensor Out No. 1 and Accel
Sensor Out No. 2.
(d) Read the value displayed on the Techstream.
Standard voltage:
ACCELERATOR
PEDAL
OPERATION
ACCEL
SENSOR
OUT NO. 1
ACCEL
SENSOR
OUT NO. 2
DIFFERENCE BETWEEN
ACCEL SENSOR OUT
NO. 1 AND ACCEL
SENSOR OUT NO. 2
Released
0.5 to 1.1
V
1.2 to 2.0
V
More than 0.02 V
Depressed
2.6 to 4.5
V
3.4 to 4.75
V
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2120,P2122...
A
OK
Result
RESULT
PROCEED TO
NG
A
OK
B
B
GO TO STEP 5
2.
CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR -
ECM)
(a) Disconnect the A14 APP sensor connector.
(b) Disconnect the A24 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A14-6 (VPA) - A24-55 (VPA)
Always
Below 1 Ω
A14-5 (EPA) - A24-58 (EPA)
Always
Below 1 Ω
A14-4 (VCPA) - A24-57 (VCPA)
Always
Below 1 Ω
A14-3 (VPA2) - A24-56 (VPA2)
Always
Below 1 Ω
A14-2 (EPA2) - A24-60 (EPA2)
Always
Below 1 Ω
A14-1 (VCP2) - A24-59 (VCP2)
Always
Below 1 Ω
A14-6 (VPA) or A24-55 (VPA) - Body ground
Always
10 kΩ or higher
A14-5 (EPA) or A24-58 (EPA) - Body ground
Always
10 kΩ or higher
A14-4 (VCPA) or A24-57 (VCPA) - Body ground
Always
10 kΩ or higher
A14-3 (VPA2) or A24-56 (VPA2) - Body ground
Always
10 kΩ or higher
A14-2 (EPA2) or A24-60 (EPA2) - Body ground
Always
10 kΩ or higher
A14-1 (VCP2) or A24-59 (VCP2) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2120,P2122...
OK
NEXT
3.
CHECK ECM (VCPA AND VCP2 VOLTAGE)
(a) Disconnect the A14 APP sensor connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
A14-4 (VCPA) - A14-5
(EPA)
Ignition switch ON 4.5 to 5.5 V
A14-1 (VCP2) - A14-2
(EPA2)
Ignition switch ON 4.5 to 5.5 V
NG
REPLACE ECM
4.
REPLACE ACCELERATOR PEDAL ASSEMBLY
(a) Replace the accelerator pedal assembly
.
5.
CHECK WHETHER DTC OUTPUT RECURS (ACCELERATOR PEDAL POSITION
SENSOR DTCS)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Clear DTCs
.
(d) Start the engine.
(e) Allow the engine to idle for 15 seconds.
(f) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(g) Read DTCs.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2120,P2122...
Result
RESULT
PROCEED TO
P2120, P2122, P2123, P2125, P2127, P2128, and/or P2138 are output
A
No DTC is output
B
B
SYSTEM OK
A
REPLACE ECM
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2120,P2122...
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