Toyota Tundra. Manual — part 1474

Fig. 387: Removing Heated Oxygen Sensor With SST (For Bank 2 Sensor 2)

INSTALLATION

1. INSTALL HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)

a. Using SST, install the sensor.

SST 09224-00010

Torque: without SST

44 N*m (449 kgf*cm, 32 ft.*lbf)

with SST

40 N*m (408 kgf*cm, 30 ft.*lbf)

HINT:



Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with
a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench
and SST based on the "without SST" torque specification. (See REPAIR INSTRUCTION ).



Make sure SST and wrench are connected in a straight line.

Fig. 388: Identifying Torque Wrench With Fulcrum Length

2. INSTALL HEATED OXYGEN SENSOR (for Bank 1 Sensor 2)

a. Using SST, install the sensor.

SST 09224-00010

Torque: without SST

2008 Toyota Tundra

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

44 N*m (449 kgf*cm, 32 ft.*lbf)

with SST

40 N*m (408 kgf*cm, 30 ft.*lbf)

HINT:



Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with
a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench
and SST based on the "without SST" torque specification. (See REPAIR INSTRUCTION ).



Make sure SST and wrench are connected in a straight line.

Fig. 389: Identifying Torque Wrench With Fulcrum Length

3. INSTALL FRONT EXHAUST PIPE ASSEMBLY (See INSTALLATION )

4. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY (See INSTALLATION )

5. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY (for Regular Cab Standard Deck) (See

INSTALLATION )

6. INSTALL FRONT PROPELLER SHAFT ASSEMBLY (for 4WD) (See INSTALLATION )

7. INSTALL PROPELLER SHAFT HEAT INSULATOR (for 4WD) .(See EXHAUST MANIFOLD ).

8. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

9. INSPECT FOR EXHAUST GAS LEAK . See EXHAUST MANIFOLD .

IGNITION RELAY NO. 2

ON-VEHICLE INSPECTION

NOTE:

Some systems need to be initialized after the cable is reconnected. (See
INITIALIZATION ).

2008 Toyota Tundra

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

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

2. REMOVE INTEGRATION RELAY (UNIT E)

a. Remove the engine room relay block cover.

b. Using a screwdriver, detach the 2 claws and disconnect the integration relay from the engine room

relay block.

HINT:

Tape the screwdriver tip before use.

c. Disconnect the 3 connectors.

3. INSPECT INTEGRATION RELAY (IG 2)

NOTE:



Some systems need to be initialized after the cable is reconnected.
(See INITIALIZATION ).



After the ignition switch is turned OFF, the navigation system
requires approximately 90 seconds to record various types of
memory and settings. As a result, after turning the ignition switch
OFF, wait 90 seconds or more before disconnecting the cable from
the negative (-) battery terminal.

NOTE:



Some relays are built into the integration relay (unit E). The
integration relay cannot be disassembled. If there is a malfunction in
the circuit of the integration relay, replace the integration relay.



The internal circuit of the integration relay is as shown in the
illustration below. Inspect the integration relay using the following
procedures.

Fig. 390: Detaching Claws

2008 Toyota Tundra

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

Fig. 391: Integration Relay Inner - Circuit Diagram

a. Measure the resistance of the IG2 MAIN fuse.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION

If the result is not as specified, replace the IG2 MAIN fuse.

b. Measure the resistance of the ignition relay No. 2 (IG2) circuit.

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

Standard resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection Condition Specified Condition

IG2 MAIN fuse

Always

Below 1 ohms

Tester

Connection

Condition

Specified

Condition

1C-1 - 1B-8

When battery voltage is not applied to terminals 1B-6
and 1B-7

10 kohms or

higher

When battery voltage is applied to terminals 1B-6 and
1B-7

Below 1 ohms

2008 Toyota Tundra

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