1Vd-Ftv Engine Control. Dtc P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

The ECM opens and closes the throttle valve using a rotary solenoid type actuator. Due to the opening and closing of 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.

P0488 (Bank 1), P213B (Bank 2)
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Perform the following repeatedly for 1 minute: gradually raise the engine speed to 3000 rpm from idling over approximately 10 seconds, and then release the accelerator pedal to return to an idling state.	Target and actual opening angle of the throttle valve differs for approximately 20 seconds. (1 trip detection logic)	Throttle valve stuck Throttle valve does not move smoothly Open or short in throttle control motor circuit ECM
	The throttle motor activation duty exceeds the threshold for 0.5 seconds a certain number of times (40 seconds or more). (1 trip detection logic)

Related Data List
DTC No.	Data List
P0488	Throttle Motor Duty Actual Throttle Position
P213B	Throttle Motor Duty #2 Actual Throttle Position #2

Reference
Condition	Throttle Valve Position
Moment when accelerator pedal is depressed further or released at 3000 rpm	Throttle valve 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. The ECM will determine that the throttle valve is malfunctioning and illuminate the MIL.

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).
Dtc
P0488 Exhaust Gas Recirculation Throttle Position Control Range / Performance

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses of circuits related to this system before performing the following inspection procedure.
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
After replacing the fuel supply pump assembly, the ECM needs initialization (Click here).
After replacing an injector assembly, the ECM needs registration (Click here).

HINT:

Although the DTC titles say "exhaust gas recirculation throttle position control range / performance", these DTCs relate to the throttle valve
Read freeze frame data using the GTS. 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, and other data from the time the malfunction occurred.

1.PERFORM ACTIVE TEST USING GTS (DIESEL THROTTLE TARGET ANGLE)

Connect the GTS to the DLC3.

Turn the engine switch on (IG) and turn the GTS on.

Enter the following menus: Engine and ECT / Active Test / Diesel Throttle Target Angle or Diesel Throttle Target Angle #2.

While continuously changing the Active Test value to 0, 30, 60, 90, 60, 30 and 0%, check that "Actual Throttle Position" or "Actual Throttle Position #2" smoothly changes to the set opening amount.
OK:
Value smoothly changes to set opening amount.

Go to step 5

Go to step 2

2.CHECK HARNESS AND CONNECTOR (THROTTLE CONTROL MOTOR POWER SOURCE)

Disconnect the throttle control motor connector.

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
C85-2 (VCR) - Body ground
Engine switch on (IG)
11 to 14 V
C86-2 (VCR) - Body ground
Engine switch on (IG)
11 to 14 V
Text in Illustration
*A
for Bank 1
*B
for Bank 2
*a
Front view of wire harness connector
(to Throttle Control Motor)

Text in Illustration
*A	for Bank 1
*B	for Bank 2
*a	Front view of wire harness connector (to Throttle Control Motor)

Reconnect the throttle control motor connector.

Go to step 10

OK

3.CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

Disconnect the throttle control motor connector.

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

Standard Resistance:

Tester Connection
Condition
Specified Condition
C85-3 (E2R) - Body ground
Always
Below 1 Ω
C86-3 (E2R) - Body ground
Always
Below 1 Ω

Reconnect the throttle control motor connector.

Go to step 11

OK

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

Disconnect the throttle control motor connector.

Disconnect the ECM connector.

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

Standard Resistance:

for LHD
Tester Connection	Condition	Specified Condition
C85-1 (VTAR) - C45-57 (LUSL)	Always	Below 1 Ω
C86-1 (VTAR) - C45-56 (LUS2)	Always	Below 1 Ω
C85-1 (VTAR) or C45-57 (LUSL) - Body ground	Always	10 kΩ or higher
C86-1 (VTAR) or C45-56 (LUS2) - Body ground	Always	10 kΩ or higher

Standard Resistance:

for RHD
Tester Connection	Condition	Specified Condition
C85-1 (VTAR) - C46-57 (LUSL)	Always	Below 1 Ω
C86-1 (VTAR) - C46-56 (LUS2)	Always	Below 1 Ω
C85-1 (VTAR) or C46-57 (LUSL) - Body ground	Always	10 kΩ or higher
C86-1 (VTAR) or C46-56 (LUS2) - Body ground	Always	10 kΩ or higher

Reconnect the throttle control motor connector.

Reconnect the ECM connector.

Go to step 11

OK

5.REMOVE DEPOSIT (DIESEL THROTTLE BODY ASSEMBLY)

Visually check for deposits in the diesel throttle body assembly. If there are deposits, clean the diesel throttle body assembly.

NEXT

6.PERFORM ACTIVE TEST USING GTS (DIESEL THROTTLE TARGET ANGLE)

Connect the GTS to the DLC3.

Turn the engine switch on (IG) and turn the GTS on.

Enter the following menus: Engine and ECT / Active Test / Diesel Throttle Target Angle or Diesel Throttle Target Angle #2.

While continuously changing the Active Test value to 0, 30, 60, 90, 60, 30 and 0%, check that "Actual Throttle Position" or "Actual Throttle Position #2" smoothly changes to the set opening amount.
OK:
Value smoothly changes to set opening amount.

Go to step 8

Go to step 7

7.REPLACE DIESEL THROTTLE BODY ASSEMBLY

When DTC P0488 is output:

Replace the diesel throttle body assembly (for bank 1) (Click here).

When DTC P213B is output:

Replace the diesel throttle body assembly (for bank 2) (Click here).

NEXT

8.CHECK WHETHER DTC OUTPUT RECURS

Clear the DTCs (Click here).

Turn the engine switch off and wait for 30 seconds.

Connect the GTS to the DLC3.

Turn the engine switch on (IG) and turn the GTS on.

Start the engine.

Over a period of 10 seconds or more, slowly raise the engine speed to 3000 rpm and lower it.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read the DTCs.
Result
Result
Proceed to
P0488 or P213B is output
A
No DTC is output
B

Result
Result	Proceed to
P0488 or P213B is output	A
No DTC is output	B

END

A

9.REPLACE ECM

Replace the ECM (Click here).

Go to step 12

10.REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE CONTROL MOTOR - INTEGRATION RELAY)

Repair or replace the harness or connector.

Go to step 12

11.REPAIR OR REPLACE HARNESS OR CONNECTOR

Repair or replace the harness or connector.

NEXT

12.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the GTS to the DLC3.

Clear the DTCs (Click here).

Turn the engine switch off and wait for 30 seconds.

Start the engine.

Over a period of 10 seconds or more, slowly raise the engine speed to 3000 rpm, and then lower it.

Confirm that the DTC is not output again.
HINT:
Perform the following procedure using the GTS to determine whether or not the DTC judgment has been carried out.
1. Enter the following menus: Engine and ECT / Utility / All Readiness.
2. Input DTC P0488 and P213B.
3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, over a period of 10 seconds or more, slowly raise the engine speed to 3000 rpm again, and then idle the engine for 5 minutes.

END

Tester Connection	Switch Condition	Specified Condition
C85-2 (VCR) - Body ground	Engine switch on (IG)	11 to 14 V
C86-2 (VCR) - Body ground	Engine switch on (IG)	11 to 14 V