| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028V88 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for 12.3 Inch Display): Speedometer Malfunction; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
|
Speedometer Malfunction |
DESCRIPTION
- The combination meter assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU (brake actuator assembly). The skid control ECU (brake actuator assembly) supplies power to the vehicle speed sensor. The skid control ECU (brake actuator assembly) detects vehicle speed signals based on pulses of the voltage.
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.
-
When replacing any of the following ECUs, update the ECU security key.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY](/t3Portal/stylegraphics/info.gif)
- Combination meter assembly
- Skid control ECU (brake actuator assembly)
PROCEDURE
|
1. |
CHECK TIRES |
(a) Check the tire size, tire wear and tire pressures are normal.
Click here
HINT:
Factors that affect the indicated vehicle speed include the tire size, tire wear and tire pressures.
| NG |
|
REPLACE TIRE OR ADJUST TIRE PRESSURERE |
|
|
2. |
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 |
|
GO TO CAN COMMUNICATION SYSTEM
|
|
|
3. |
CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) |
(a) Check if electronically controlled brake system DTCs are output.
Chassis > Brake/EPB > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
|
|
4. |
CONFIRM MODEL |
(a) Choose the model to be inspected.
|
Result |
Proceed to |
|---|---|
|
for Speedometer Unit km/h Type |
A |
|
for Speedometer Unit MPH Type |
B |
| B |
|
|
|
5. |
PERFORM ACTIVE TEST USING GTS |
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Speed Signal Input (0) |
Vehicle speed test signal input |
ON |
When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test. |
|
Speed Signal Input (40) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (80) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (120) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (160) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (200) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (240) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (280) |
Vehicle speed test signal input |
ON |
|
-
*: For the tolerance of speedometer, refer to Operation Check.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (0) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (40) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (80) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (120) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (160) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (200) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (240) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (280) |
|
Result |
Proceed to |
|---|---|
|
Active Test can be performed correctly |
A |
|
Active Test cannot be performed correctly |
B |
| A |
|
| B |
|
|
6. |
PERFORM ACTIVE TEST USING GTS |
(a) Perform the Active Test according to the display on the GTS.
Body Electrical > Combination Meter > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Speed Signal Input (0) |
Vehicle speed test signal input |
ON |
When this Active Test is performed, an actual vehicle speed signal is sent via CAN communication to the combination meter assembly to operate the speedometer. The seat belt warning buzzer, etc. may operate when performing this Active Test. |
|
Speed Signal Input (40) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (80) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (120) |
Vehicle speed test signal input |
ON |
|
|
Speed Signal Input (160) |
Vehicle speed test signal input |
ON |
|
-
*: For the tolerance of speedometer, refer to Operation Check.
Click here
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (0) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (40) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (80) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (120) |
Body Electrical > Combination Meter > Active Test
|
Tester Display |
|---|
|
Speed Signal Input (160) |
|
Result |
Proceed to |
|---|---|
|
Active Test can be performed correctly |
A |
|
Active Test cannot be performed correctly |
B |
| A |
|
| B |
|
|
|