DATA LIST / ACTIVE TEST
ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (for HV model)
(c) Turn the engine switch on (IG). (for Gasoline model)
(d) Turn the Techstream on.
(e) Enter the following menus: Body Electrical / Main Body / Active Test.
(f) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|---|---|---|---|
|
Vehicle Horn | Vehicle horn |
OFF or ON | - |
PARTS LOCATION
ILLUSTRATION
|
*1 | HIGH PITCHED HORN ASSEMBLY |
*2 | LOW PITCHED HORN ASSEMBLY |
|
*3 | HORN RELAY |
*4 | ENGINE ROOM RELAY BLOCK AND JUNCTION BLOCK ASSEMBLY - HORN FUSE |
ILLUSTRATION
|
*1 | SPIRAL CABLE SUB-ASSEMBLY |
*2 | HORN BUTTON ASSEMBLY |
|
*3 | INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
*4 | MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
NOTICE:
When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system after the cable is reconnected.
|
System Name | See Procedure |
|---|---|
|
Lane Departure Alert System (w/ Steering Control) |
|
|
Intelligent Clearance Sonar System | |
|
Parking Assist Monitor System | |
|
Panoramic View Monitor System | |
|
Pre-collision System | |
|
Lighting System (for HV Model with Cornering Light) | |
|
Lighting System (for Gasoline Model with Cornering Light) |
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
for Gasoline Model: Click here 
for HV Model: Click here
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Horn System|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Horn does not sound | HORN fuse |
- |
| HORN relay |
| |
|
Horn button assembly |
| |
|
Spiral cable sub-assembly |
| |
|
Instrument panel junction block assembly |
| |
|
Harness or connector |
- | |
|
Horn sounds all the time |
HORN relay |
|
|
Horn button assembly |
| |
|
Spiral cable sub-assembly |
| |
|
Instrument panel junction block assembly |
| |
|
Main body ECU (Multiplex network body ECU) |
| |
|
Harness or connector |
- | |
| Low pitched horn operates but high pitched horn does not operate |
High pitched horn assembly |
|
|
Harness or connector |
- | |
| High pitched horn operates but low pitched horn does not operate |
Low pitched horn assembly |
|
|
Harness or connector |
- |
SYSTEM DIAGRAM
Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Sliding Roof / Convertible: Sliding Roof Housing
Components COMPONENTS ILLUSTRATION *1 SLIDING ROOF GLASS SUB-ASSEMBLY *2 SLIDING ROOF SIDE GARNISH LH *3 SLIDING ROOF SIDE GARNISH RH *4 SLIDING ROOF WEATHERSTRIP *5 SLIDING ROOF PANEL SUB-ASSEMBLY - - N*m (kgf*cm, ft.*lbf): Specified torque ● Non-reusable part ILLUSTRATION *1 SLIDING ROOF DRAIN H ...
