Brand:

Toyota

Model Name:

4Runner GRN210 215 UZN210 215

Manual:

Repair Manual

Section:

1Gr-Fe Engine Control System

Title:

Sfi System

  1. Description

  2. Monitor description

  3. Monitor strategy

  4. Typical enabling conditions

  5. Typical malfunction thresholds

  6. Fail-safe

  7. Wiring diagram

  8. Inspection procedure

  9. Check any other dtcs output (in addition to dtc p2111 or p2112)

  10. Inspect throttle with motor body assembly (visually check throttle valve)

  11. Check whether dtc output recurs (dtc p2111 or p2112)

DTC P2111 Throttle Actuator Control System - Stuck Open

DTC P2112 Throttle Actuator Control System - Stuck Closed


​

DESCRIPTION

The throttle actuator is operated by the ECM, and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted on the throttle body. The TP sensor provides feedback to the ECM in order that it can control the throttle actuator, and the throttle valve, appropriately in response to driver inputs.
HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle cable.

DTC No.
DTC Detection Conditions
Trouble Areas
P2111
ECM signals throttle actuator to close, but stuck (1 trip detection logic)
  1. Throttle actuator
  2. Throttle body
  3. Throttle valve
P2112
ECM signals throttle actuator to open, but stuck (1 trip detection logic)
  1. Throttle actuator
  2. Throttle body
  3. Throttle valve

MONITOR DESCRIPTION

The ECM determines that there is a malfunction in the ETCS when the throttle valve remains at the fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and sets a DTC.
If the malfunction is not repaired successfully, a DTC is set when the accelerator pedal is fully depressed and released quickly (to fully open and close the throttle valve) after the engine is next started.

MONITOR STRATEGY


Related DTCs
P2111: Throttle actuator stuck open
P2112: Throttle actuator stuck closed
Required Sensors / Components (Main)
Throttle actuator
Required Sensors / Components (Related)
-
Frequency of Operation
Continuous
Duration
0.5 seconds
MIL Operation
Immediate
Sequence of Operation
None

TYPICAL ENABLING CONDITIONS


All:
The monitor will run whenever these DTCs are not present
None

P2111:
System guard*
ON
Throttle actuator current
2 A or more
Duty cycle to close throttle
80 % or more
*: System guard is ON when the following conditions are met
-
Throttle actuator
ON
Throttle actuator duty calculation
Executing
Throttle position sensor
Fail determined
Throttle actuator current-cut operation
Not executing
Throttle actuator power supply
4 V or more
Throttle actuator
Fail determined

P2112:
System guard*
ON
Throttle actuator current
2 A or more
Duty cycle to open throttle
80 % or more
*: System guard is ON when the following conditions are met
-
Throttle actuator
ON
Throttle actuator duty calculation
Executing
Throttle position sensor
Fail determined
Throttle actuator current-cut operation
Not executing
Throttle actuator power supply
4 V or more
Throttle actuator
Fail determined

TYPICAL MALFUNCTION THRESHOLDS


TP sensor voltage change
No change

FAIL-SAFE

When any of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, are set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator off, and the throttle valve is returned to a 6° 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

Refer to DTC P2102 (Click here).

INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. 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 running or stopped, 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 P2111 OR P2112)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on.

  1. Turn the tester on.

  1. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

  1. Read DTCs.

    Result:

    Display (DTC Output)
    		Proceed to
    P2111 or P2112
    		A
    P2111 or P2112 and other DTCs
    		B
    HINT:
    If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.


Bnext
GO TO DTC CHART
A
next down

2.INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

  1. Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body. And check that the throttle valve moves smoothly.

    OK:
    Throttle valve is not contaminated with foreign objects and moves smoothly.


NGnext
REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY
OK
next down

3.CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on.

  1. Turn the tester on.

  1. Clear DTCs (Click here).

  1. Start the engine, and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).

  1. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

  1. Read DTCs.

    Result:

    Display (DTC Output)
    		Proceed to
    No DTC
    		A
    P2111 or P2112
    		B


Bnext
REPLACE ECM
A
next down
CHECK FOR INTERMITTENT PROBLEMS