Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 1Ad-Ftv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0488)

CHECK IF DTC OUTPUT RECURS

CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - ECM)

CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - BODY GROUND)

CHECK TERMINAL VOLTAGE (+B OF DIESEL THROTTLE CONTROL MOTOR - BODY GROUND)

REPLACE DIESEL THROTTLE BODY ASSEMBLY (THROTTLE CONTROL MOTOR)

CHECK WHETHER DTC OUTPUT RECURS

CHECK FUSE (EFI NO. 2 FUSE)

DTC P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance


DESCRIPTION

The ECM opens and closes the throttle valve using a rotary solenoid type actuator. Due to opening and closing the valve, the exhaust gas recirculation volume can be properly controlled. Also, engine vibration and noise will be reduced by closing the valve when the engine is stopped.

DTC No.
DTC Detection Condition
Trouble Area
P0488
When either condition below is met:
  1. Throttle valve remains closed despite ECM's signal to open valve
    (1-trip detection logic)
  2. Throttle valve remains open despite ECM's signal to close valve
    (1-trip detection logic)
  1. Throttle valve stuck
  2. Throttle valve does not move smoothly
  3. Open or short in throttle valve circuit
  4. Open or short in throttle valve position sensor circuit
  5. Throttle position sensor (built into diesel throttle body assembly)
  6. ECM

УКАЗАНИЕ:
After confirming DTC P0488, check the throttle position.

Reference:
Condition
Throttle Valve Position
Moment when accelerator pedal is further depressed or released at 3000 rpm
Opening angle varies smoothly

MONITOR DESCRIPTION

The ECM opens and closes the throttle valve by adjusting the current flowing to the rotary solenoid with a duty ratio. If the throttle valve does not move smoothly or is stuck, the duty ratio used during valve movement control increases or decreases greatly, and the ECM will determine that the throttle valve is malfunctioning and the ECM will illuminate the MIL.

COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance


WIRING DIAGRAM


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (See page Нажмите здесь) and initialization (See page Нажмите здесь).
УКАЗАНИЕ:
  1. After warming up the engine, DTC P0488 can be set if 1 second or more passes after quickly accelerating the engine from idling.
  2. 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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0488)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0488 is output
    		A
    DTC P0488 and P0120, P0122 and/or P0123 are output
    		B
    УКАЗАНИЕ:
    If codes other than P0488 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (Нажмите здесь)
A


2.CHECK IF DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC / Clear.

  1. Clear the DTCs (See page Нажмите здесь).

  1. Start the engine and accelerate the engine from idling to 3000 rpm 3 times quickly.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0488 is output
    		A
    DTC is not output
    		B
    УКАЗАНИЕ:
    The normal operation of the throttle valve is as follows.
    Reference:
    Condition
    		Throttle Valve Position
    Moment when accelerator pedal is further depressed or released at 3000 rpm
    		Opening angle varies smoothly


B
CHECK FOR INTERMITTENT PROBLEMS (Нажмите здесь)
A


3.CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

  1. Disconnect the throttle control motor connector.

  1. Disconnect the ECM connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance (Check for open):
    Tester Connection
    		Condition
    		Specified Condition
    B67-1 (RSO) - B31-86 (LUSL)
    		Always
    		Below 1 Ω
    Standard resistance (Check for short):
    Tester Connection
    		Condition
    		Specified Condition
    B67-1 (RSO) or B31-86 (LUSL) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the throttle control motor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - ECM)
OK


4.CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - BODY GROUND)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

  1. Disconnect the throttle control motor connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B67-3 (RSC) - Body ground
    		Always
    		Below 1 Ω

  1. Reconnect the throttle control motor connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (DIESEL THROTTLE CONTROL MOTOR - BODY GROUND)
OK


5.CHECK TERMINAL VOLTAGE (+B OF DIESEL THROTTLE CONTROL MOTOR - BODY GROUND)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

  1. Disconnect the throttle control motor connector.

  1. Turn the ignition switch on (IG).

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    B67-2 (+B) - Body ground
    		Ignition switch on (IG)
    		11 to 14 V

  1. Reconnect the throttle control motor connector.



NG
Перейдите к шагу 8
OK


6.REPLACE DIESEL THROTTLE BODY ASSEMBLY (THROTTLE CONTROL MOTOR)

  1. Replace the throttle body assembly (See page Нажмите здесь).


NEXT


7.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Clear the DTCs (See page Нажмите здесь).

  1. Start the engine and drive the vehicle for approximately 15 minutes.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0488 is output
    		A
    DTC is not output
    		B


B
SYSTEM IS OK
A

REPLACE ECM (Нажмите здесь)

8.CHECK FUSE (EFI NO. 2 FUSE)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 1Ad-Ftv.Система Ecd. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

  1. Remove the EFI No. 2 fuse from the engine room relay block.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    EFI No. 2 fuse
    		Always
    		Below 1 Ω

  1. Reinstall the EFI No. 2 fuse.



NG
REPLACE FUSE (EFI NO. 2 FUSE)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - DIESEL THROTTLE CONTROL MOTOR)