Toyota Tundra (2015 year). Manual — part 1289

A

OK

(i) Perform the System Check operation by pressing ENTER (Next).

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

Press the Exit button.

(k) Check pending DTCs.

(l) 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.

Result

RESULT

PROCEED TO

P2444, P2445, P2446 and/or P2447 is output

A

No pending DTC is output

B

B

CHECK FOR INTERMITTENT PROBLEMS

9.

CHECK VACUUM HOSE (PRESSURE SENSOR - AIR SWITCHING VALVE)

(a) Check the vacuum hose connections with the pressure sensor and air switching valve assembly.

(b) Inspect the vacuum hose for blockages and damage.

OK:

Vacuum hose has no blockages or damage.

NG

REPAIR OR REPLACE VACUUM HOSE

10.

INSPECT AIR SWITCHING VALVE ASSEMBLY (PRESSURE SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...

A

(d) Enter the following menus: Powertrain / Engine and ECT / Data List / Air pump pressure (Absolute)

and Air Pump2 Pressure (Absolute).

(e) Check the pressure displayed on the Techstream.

Standard pressure:

45 to 135 kPa

HINT:

The Techstream displays the air pump pressure as absolute pressure.

Result

RESULT

PROCEED TO

OK

A

NG (for Bank 1)

B

NG (for Bank 2)

C

B

REPLACE AIR SWITCHING VALVE ASSEMBLY (FOR

BANK 1)

C

REPLACE AIR SWITCHING VALVE ASSEMBLY (FOR

BANK 2)

11.

CHECK AIR INJECTION SYSTEM PIPE CONNECTIONS

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...

OK

(a) Check that all the pipes and hoses between the air pump and ASV are securely connected.

(b) Inspect the pipes and hoses for blockages and damage.

OK:

AIR system piping has no blockages or damage.

NG

REPAIR OR REPLACE SECONDARY AIR INJECTION

SYSTEM PIPING

12.

INSPECT AIR INJECTION CONTROL DRIVER (AIR INJECTION CONTROL DRIVER
POWER SOURCE CIRCUIT)

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...

OK

(a) Disconnect the air injection control driver (for bank 1 or bank

2) connectors.

(b) Measure the resistance according to the value(s) in the table

below.

Standard Resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

D50-1 (E) - Body ground

Always

Below 1 Ω

D54-1 (E2) - Body ground

Always

Below 1 Ω

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table

below.

Standard Voltage:

TESTER CONNECTION

SWITCH

CONDITION

SPECIFIED CONDITION

D48-1 (BATT) - Body

ground

Always

11 to 14 V (near battery

voltage)

D50-5 (+B) - Body

ground

Ignition switch

ON

11 to 14 V (near battery

voltage)

D52-1 (BAT2) - Body

ground

Always

11 to 14 V (near battery

voltage)

D54-5 (+B2) - Body

ground

Ignition switch

ON

11 to 14 V (near battery

voltage)

NG

REPAIR OR REPLACE AIR INJECTION CONTROL

DRIVER POWER SOURCE CIRCUIT

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...