The DPF (Diesel Particulate Filter) is an emission control system which processes the particulate matter (PM) that is emitted from a diesel engine. The DPF catalyst converter has a porous ceramic structure which has a PM collecting function. The PM that is collected is continuously treated by oxidation due to catalytic action at high temperatures. However, however PM accumulation increases at low catalyst temperatures because the oxidation process slows down. The ECM performs PM forced regeneration so that the amount of accumulated PM does not exceed the threshold.

Dtc P244C Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

P244C (Bank 1), P244E (Bank 2)
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
PM forced regeneration	During PM forced regeneration, catalyst temperature does not increase sufficiently for 3 minutes. (1 trip detection logic)	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter) Exhaust fuel addition injector assembly No. 2 exhaust gas temperature sensor (B1S2) No. 3 exhaust gas temperature sensor (B2S2) No. 4 exhaust gas temperature sensor (B1S3, B2S3) Common Inspection Item: Fuel injection system Intake/exhaust system After treatment control system

P2458
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
PM forced regeneration	When PM forced regeneration is manually performed, PM forced regeneration does not finish even after 60 minutes or more elapse. (1 trip detection logic)	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter) Exhaust fuel addition injector assembly No. 2 exhaust gas temperature sensor (B1S2) No. 3 exhaust gas temperature sensor (B2S2) No. 4 exhaust gas temperature sensor (B1S3, B2S3) Common Inspection Item: Fuel injection system Intake/exhaust system After treatment control system

P2463
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
PM forced regeneration	While driving, PM accumulation amount exceeds the limit. (1 trip detection logic)	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter) Exhaust fuel addition injector assembly No. 2 exhaust gas temperature sensor (B1S2) No. 3 exhaust gas temperature sensor (B2S2) No. 4 exhaust gas temperature sensor (B1S3, B2S3) Differential pressure sensor assembly Common Inspection Item: Fuel injection system Intake/exhaust system After treatment control system

HINT:

PM forced regeneration may be prohibited due to a fail-safe operation that is performed when another DTC is stored (including engine output limitation).

Related Data List
DTC No.	Data List
P244C P244E P2458 P2463	Exhaust Fuel Addition FB Exhaust Fuel Addition FB #2 Catalyst Differential Press Catalyst Differential Press #2

MONITOR DESCRIPTION

The ECM monitors the differential pressure between the upstream and downstream of the DPF catalyst converter and also monitors exhaust gas temperature to detect a malfunction in the DPF catalyst converter.

Excessive PM accumulation:

The ECM monitors the PM Accumulation Ratio and when the accumulated PM volume in the DPF catalyst converter exceeds the limit, the ECM illuminates the MIL.

Abnormal catalyst temperature increase:

The ECM monitors exhaust gas temperature increase while the exhaust fuel addition injector assemblies adds fuel during PM forced regeneration. Exhaust gas temperature increases up to approximately 300 to 500°C (572 to 932°F) during PM forced regeneration. If the temperature does not increase even after a certain amount of time has elapsed, the ECM determines that the DPF catalyst converter is abnormal and illuminates the MIL.

Diesel particulate filter regeneration duration:

When PM forced regeneration is manually performed and PM forced generation does not finish even after 60 minutes or more elapse, the ECM determines that there is problem with the DPF catalyst converter and illuminates the MIL.

Dtc P244C Exhaust Temperature Too Low For Particulate Filter Regeneration Bank 1. 1VD-FTV ENGINE CONTROL. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

NOTICE:

After replacing the ECM, the new ECM needs registration () and initialization ().

After replacing the fuel supply pump assembly, the ECM needs initialization ().

After replacing an injector assembly, the ECM needs registration ().

HINT:

If DTC P244B, P244C, P244E, P2458, P2463 or P2465 is stored, the fail-safe controls the engine power output and PM forced regeneration is prohibited. In this case, PM forced regeneration can be performed after disconnecting the EFI MAIN fuse or battery terminal and waiting for 60 seconds or more before connecting it again.

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.READ OUTPUT DTC (RECORD STORED DTC AND FREEZE FRAME DATA)

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

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

Record the stored DTC and freeze frame data.

Check "Exhaust Fuel Addition FB", "Exhaust Fuel Addition FB #2", "Catalyst Differential Press" and "Catalyst Differential Press #2" in the freeze frame data.

HINT:

When the "Exhaust Fuel Addition FB" and "Exhaust Fuel Addition FB #2" values are 1.45 or more, it indicates a high possibility of insufficient temperature increase during PM regeneration control.

When the "Catalyst Differential Press" and "Catalyst Differential Press #2" values are 0.45 or more, it indicates a high possibility that DPF catalyst converter is clogged.

NEXT

2.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P244C, P244E, P2458 AND P2463)

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

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

Read the DTCs.

Result
Result	Proceed to
P244C, P244E, P2458 or P2463 is output	A
P244B or P2465 is output at the same time as P2463*	B
Only P2463 is output	C
Other relevant DTCs are output	D

HINT:

*: When P244B or P2465 is output at the same time as P2463, perform troubleshooting for P244B or P2465.

When DTC P1603, P1604 or P1608 is output in addition to P244C or P244E, perform troubleshooting for P1603, P1604 or P1608 first.

GO TO DTC P244B ()

Go to step 7

Go to step 4

A

3.CHECK FOR BLACK SMOKE

Start the engine and drive the vehicle until the engine coolant temperature reaches 60°C (140°F) or higher.

Stop the vehicle and allow the engine to idle.

Fully depress the accelerator pedal for 5 seconds, and then release it [A].

Repeat the above procedure [A] 10 times [B].

Check for black smoke emission during procedures [A] and [B].

OK:
Black smoke is emitted less than 5 times.

HINT:

Even if the black smoke is very thin, count the number of black smoke emissions if there is any visible smoke.

Go to step 5

Go to step 6

4.GO TO DTC CHART

Diagnose relevant DTCs ().

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5.CHECK FOR WHITE SMOKE (DURING PM FORCED REGENERATION)

Connect the GTS to the DLC3.

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

Clear the DTCs ().

Start the engine and warm it up until the engine coolant temperature reaches 60°C (140°F) or higher.

Perform PM forced regeneration ().

Check if excessive white smoke occurs when "Exhaust Temperature B1S3" and "Exhaust Temperature B2S3" are 300°C (572°F) or more.

Result
Result	Proceed to
Excessive smoke occurs during PM forced regeneration (Exhaust Temperature B1S3 and Exhaust Temperature B2S3 are 300°C (572°F))	A
Except above	B

HINT:

When excessive white smoke occurs only during PM forced regeneration, the problem may be due to uncombusted fuel passing through due to the deterioration of the DPF catalyst converter.

When combustion control has a malfunction, deterioration or abnormality of driving performance can be felt despite PM forced regeneration being performed.

Go to step 7

A

6.REPLACE EXHAUST PIPE ASSEMBLIES (DPF CATALYTIC CONVERTERS)

Even though it has been determined that the exhaust pipe assemblies (DPF catalyst converters) need to be replaced, make sure to perform all diagnostic procedures for P244C, P244E, P2458 and P2463 before replacing them.

HINT:

These DTCs are stored because an excessive amount of PM has accumulated and resulted in abnormal combustion. It is necessary to diagnose the cause of abnormal PM accumulation and repair the problem. Therefore, do not perform replacement at this time.

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7.CHECK FUEL INJECTION SYSTEM

Check the fuel injection system ().

NEXT

8.CHECK INTAKE / EXHAUST SYSTEM

Check the Intake/exhaust system ().

NEXT

9.CHECK AFTER TREATMENT CONTROL SYSTEM

Check the after treatment control system ().

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10.REPAIR OR REPLACE MALFUNCTIONING PARTS

Determine the parts to replace according to the output DTCs.

Result
Result	Items to be Replaced
P244C is output	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)
P244E is output	Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)
P2458 is output	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)
P2463* is output	Monolithic converter assembly RH (for bank 1 CCo catalytic converter) Monolithic converter assembly LH (for bank 2 CCo catalytic converter) Front exhaust pipe assembly (for bank 1 DPF catalytic converter) Front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter)

HINT:

Replace the following items only when it has been determined necessary based on diagnosis for P244C, P244E, P2458 and P2463.

Replace the DPF catalytic converter for bank 1 and bank 2 at the same time.

*: During the after treatment control system inspection performed when DTC P2463 is output, if Catalyst Differential Press and Catalyst Differential Press #2 decrease to 0.45 or less after forced regeneration is performed and there are no melted or clogged areas found when visually inspecting the CCo catalytic converter and DPF catalytic converter, then do not perform catalytic converter replacement.

Replace the front exhaust pipe assembly (for bank 1 DPF catalytic converter) ().

Replace the front No. 2 exhaust pipe assembly (for bank 2 DPF catalytic converter) ().

Replace the Monolithic converter assembly RH (for bank 1 CCo catalytic converter) ().

Replace the Monolithic converter assembly LH (for bank 2 CCo catalytic converter) ().

Repair or replace the malfunctioning part confirmed in the diagnosis of the fuel injection system, Intake/exhaust system and after treatment control system.

NEXT

11.CATALYST RECORD CLEAR

Perform the catalyst record clear ().

HINT:

If the DPF catalytic converter or CCo catalytic converter is replaced, perform "catalyst record clear".

If the DPF catalytic converter and CCo catalytic converter were not replaced, proceed to the next step.

NEXT

12.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

Connect the GTS to the DLC3.

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

Clear the DTCs ().

Start the engine and warm it up until the engine coolant temperature reaches 60°C (140°F) or higher.

Perform PM forced regeneration ().

END

1VD-FTV ENGINE CONTROL

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

ECD SYSTEM w/ DPF