Toyota Tundra. Manual — part 1429

Fig. 233: Identifying D48 & D50 Or D52 & D54 Aid Connectors

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

NG : REPAIR OR REPLACE AIR INJECTION CONTROL DRIVER POWER SOURCE
CIRCUIT

OK : Go to Next Step

6. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER)

a. Disconnect the A24 or D74 ECM connector.

b. Disconnect the D50 or D54 AID connector.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection

Condition Specified Condition

D74-28 (AIRV) - D50-3 (SIV)

Always

Below 1 ohms

A24-43 (ARV2) - D54-3 (SIV2) Always

Below 1 ohms

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 234: Identifying A24 Or D74 ECM & D50 Or D54 AID Connectors

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : Go to Next Step

7. REPLACE AIR INJECTION CONTROL DRIVER

a. Replace the air injection control driver. (See AIR INJECTION DRIVER ).

8. CHECK WHETHER DTC OUTPUT RECURS (DTC P2440, P2441, P2442 AND/OR P2443)

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). (See DTC CHECK/CLEAR ).

f. Enter the following menus: Powertrain/Engine and ECT/Utility/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.

k. Turn the ignition switch off.

OK: No pending DTC output.

NG : REPLACE ECM (See REMOVAL )

OK : END

9. INSPECT VACUUM HOSES (AIR SWITCHING VALVE - PRESSURE SENSOR)

OK: No blockage and no deformation in vacuum hose.

NG : REPAIR OR REPLACE VACUUM HOSE

OK : Go to Next Step

10. READ VALUE USING AIR SWITCHING VALVE (PRESSURE SENSOR)

a. Connect a pressure gauge to the air pressure sensor as shown in the illustration.

NOTE:



When performing the 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 Air Injection Check
operation finishes.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra