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.
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 the combination meter assembly, update the ECU security key.
Combination meter assembly
Skid control ECU (brake actuator assembly)
Check the tire size, tire wear and tire pressures are normal.
Factors that affect the indicated vehicle speed include the tire size, tire wear and tire pressures.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Choose the model to be inspected.
| Result | Proceed to |
|---|---|
| for HV Model | A |
| for Gasoline Model | B |
A
B
Check if CAN communication DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Check if electronically controlled brake system DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Perform the Active Test according to the display on the GTS.
| 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 | ·
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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (80) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (120) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (160) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (200) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (240) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (280) | 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. ·
When the value of the Active Test is more than or equal to the speedometer upper limit, the indicated speed stops at the upper limit. |
*: For the tolerance of speedometer, refer to On-Vehicle Inspection.
| Tester Display |
|---|
| Speed Signal Input (0) |
| Tester Display |
|---|
| Speed Signal Input (40) |
| Tester Display |
|---|
| Speed Signal Input (80) |
| Tester Display |
|---|
| Speed Signal Input (120) |
| Tester Display |
|---|
| Speed Signal Input (160) |
| Tester Display |
|---|
| Speed Signal Input (200) |
| Tester Display |
|---|
| Speed Signal Input (240) |
| 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
Check if CAN communication DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Check if electronically controlled brake system DTCs are output.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Perform the Active Test according to the display on the GTS.
| 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 | ·
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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (80) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (120) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (160) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (200) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (240) | 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. ·
The value displayed on the speedometer may deviate.* |
| Speed Signal Input (280) | 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. ·
When the value of the Active Test is more than or equal to the speedometer upper limit, the indicated speed stops at the upper limit. |
*: For the tolerance of speedometer, refer to On-Vehicle Inspection.
| Tester Display |
|---|
| Speed Signal Input (0) |
| Tester Display |
|---|
| Speed Signal Input (40) |
| Tester Display |
|---|
| Speed Signal Input (80) |
| Tester Display |
|---|
| Speed Signal Input (120) |
| Tester Display |
|---|
| Speed Signal Input (160) |
| Tester Display |
|---|
| Speed Signal Input (200) |
| Tester Display |
|---|
| Speed Signal Input (240) |
| 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