| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001AHYR |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - ] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for HV Model): Speedometer Malfunction; 2019 - 2022 MY Avalon HV [04/2018 - ] | ||
|
Speedometer Malfunction |
DESCRIPTION
The combination meter assembly receives vehicle speed signals from the skid control ECU (brake booster with master cylinder assembly) via CAN communication. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU (brake booster with master cylinder assembly). The skid control ECU (brake booster with master cylinder assembly) supplies power to the vehicle speed sensor. The skid control ECU (brake booster with master cylinder assembly) detects vehicle speed signals based on pulses of the voltage.
HINT:
Factors that affect the indicated vehicle speed include the tire size, tire inflation, and tire wear. The speed indicated on the speedometer has an allowable margin of error.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
-
Before starting the following inspection, inspect the speedometer and check that the tire size and air pressure are as specified.
Tire size and air pressure: Click here
![2019 - 2020 MY Avalon Avalon HV [04/2018 - 08/2020]; TIRE / WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION](/t3Portal/stylegraphics/info.gif)
Speedometer: Click here
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication DTCs are output.
Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
|
|
2. |
CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Check if electronically controlled brake system DTCs are output.
Chassis > ABS/VSC/TRAC > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM
|
|
|
3. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Speedometer Operation (0km/h,0MPH) |
Speedometer (0km/h, 0mph) |
ON |
- |
|
Speedometer Operation (40km/h,40MPH) |
Speedometer (40 km/h, 40 mph) |
ON |
The value displayed on the speedometer may deviate. Reference mph: 40 → 39.4 to 42.2 |
|
Speedometer Operation (80km/h,80MPH) |
Speedometer (80 km/h, 80 mph) |
ON |
The value displayed on the speedometer may deviate. Reference mph: 80 → 80.0 to 83.2 |
|
Speedometer Operation (120km/h,120MPH) |
Speedometer (120 km/h, 120 mph) |
ON |
The value displayed on the speedometer may deviate. Reference mph: 120 → 120.9 to 124.1 |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speedometer Operation (0km/h,0MPH) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speedometer Operation (40km/h,40MPH) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speedometer Operation (80km/h,80MPH) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speedometer Operation (120km/h,120MPH) |
OK:
Speedometer indication is normal.
| OK |
|
REPLACE SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY)
|
| NG |
|
REPLACE COMBINATION METER ASSEMBLY
|
|
|