Toyota Tundra (2015 year). Manual — part 1174

(a) Start the engine and warm it up.

(b) Turn the ignition switch off.

(e) Turn the ignition switch to ON and turn the Techstream ON.

(f) Start the engine.

(g) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check /

Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR PUMP 1: OFF,
ASV1: CLOSE, AIR PUMP 2: OFF, ASV2: CLOSE.

HINT:

When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is

performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV
operation can be selected.

(h) Measure the current while the air pump is on and off.

Standard Current:

TESTER OPERATION

AIR PUMP

ASV

SPECIFIED CONDITION

AIR PUMP: ON, ASV: OPEN

ON

OPEN

10 to 40 A

AIR PUMP: OFF, ASV: CLOSE

OFF

CLOSE

Below 1 A

NOTICE:

prohibition (WAIT or ERROR).

If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then

try again.

NEXT

When performing the Secondary Air Injection Check operation after the battery cable has been
reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.

NG

GO TO STEP 3

OK

REPLACE AIR INJECTION CONTROL DRIVER (FOR

BANK 1 OR BANK 2)

3.

REPLACE AIR PUMP ASSEMBLY (FOR BANK 1 OR BANK 2)

(a) Replace the air pump assembly (for bank 1 or bank 2)

.

4.

CHECK WHETHER DTC OUTPUT RECURS (DTC P0418 AND/OR P0419)

(a) Start the engine and warm it up.

(b) Turn the ignition switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON and turn the Techstream ON.

(e) Clear DTCs (if set)

.

(f) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check /

Automatic Mode.

(g) Start the engine after the Techstream initialization is finished.

(h) Perform the System Check operation by pressing Next.

(i) After operating the AIR system, perform the following to confirm the AIR system pending codes:

Press the Exit button.

(j) Check pending DTCs.

OK:

No pending DTC is output.

(k) Turn the ignition switch off.

NOTICE:

When performing the Secondary Air Injection Check operation after the battery cable has been
reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.

NG

REPLACE AIR INJECTION CONTROL DRIVER (FOR

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...

BANK 1 OR BANK 2)

OK

END

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000000TMD0DYX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P0430; Catalyst System Efficiency Below

Threshold (Bank 1); 2015 MY Tundra [08/2014 - ]

DTC

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

DTC

P0430

Catalyst System Efficiency Below Threshold (Bank 2)

MONITOR DESCRIPTION

The first sensor, the Air-Fuel Ratio (A/F) sensor, sends pre-catalyst information to the ECM. The second sensor,

the Heated Oxygen (HO2) sensor, sends post-catalyst information to the ECM.

control.

the TWC.

DTC

NO.

DTC DETECTION CONDITION

TROUBLE AREA

P0420

OSC value smaller than standard value under

active air-fuel ratio control

(1 trip detection logic)

Gas leak from exhaust system

Air-Fuel Ratio (A/F) sensor (for Bank 1

Sensor 1)

Heated Oxygen (HO2) sensor (for Bank 1

Sensor 2)

Front No. 2 exhaust pipe assembly (TWC:

Front catalyst and rear catalyst)

EGR valve

P0430

OSC value smaller than standard value under

active air-fuel ratio control

(1 trip detection logic)

Gas leak from exhaust system

Air-Fuel Ratio (A/F) sensor (for Bank 2

Sensor 1)

Heated Oxygen (HO2) sensor (for Bank 2

Sensor 2)

Front exhaust pipe assembly (TWC: Front

catalyst and rear catalyst)

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P0430; ...