Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Installation

INSTALLATION

PROCEDURE

1. INSTALL HORN BUTTON ASSEMBLY

(a) Check that the engine switch (for Gasoline Model) or power switch (for HV Model) is off.

(b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(c) When using a new spiral cable sub-assembly:

(1) Engage the wire harness clamp and disconnect the airbag connector as shown in the illustration.

*a	Wire Harness Clamp
*b	Airbag Connector
	Remove in this Direction

HINT:

Be sure to engage the wire harness clamp until it is locked.

(d) When reusing a spiral cable sub-assembly or spiral cable with sensor sub-assembly:

*a	Airbag Connector
*b	Horn Connector
*c	Airbag Connector Locking Button
*d	Wire Harness Clamp
	Push in this Direction

(1) Engage the wire harness clamp.

HINT:

Be sure to engage the wire harness clamp until it is locked.

(e) Connect the 2 airbag connectors to the horn button assembly.

NOTICE:

• When connecting any airbag connector, take care not to damage the airbag wire harness.
• Be sure to connect the connectors to each corresponding color.

(f) Push in the 2 airbag connector locking buttons as shown in the illustration to install the 2 airbag connectors.

(g) Connect the horn connector to the horn button assembly.

(h) Push the horn button assembly to engage the 3 pins carefully and install the horn button assembly. NOTICE: Make sure that the pins are securely inserted into the steering wheel assembly holes. Make sure to engage the 2 upper pins first. Make sure that the horn button assembly is securely installed.

2. INSTALL LOWER NO. 2 STEERING WHEEL COVER

(a) Engage each claw to install the 3 lower No. 2 steering wheel covers.

3. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

for Gasoline Model: Click here

for HV Model: Click here

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

4. INSTALL LUGGAGE TRIM SERVICE HOLE COVER (for HV Model)

Click here

5. INSPECT HORN BUTTON ASSEMBLY

(a) Make sure that the horn sounds.

If the horn does not sound, inspect the horn system.

Click here

6. PERFORM DIAGNOSTIC SYSTEM CHECK

for Gasoline Model: Click here

for HV Model: Click here

7. INSPECT SRS WARNING LIGHT

for Gasoline Model: Click here

for HV Model: Click here