Inspection steps

CAUTION: If the check result of vehicle speed reading is outside the allowable range, perform an inspection using a speed meter tester. (Refer to METER & GAUGE SYSTEM )

Reading diagnostic codes

Using SSM4, check if any diagnostic code related to CAN communication system is output. (Refer to BASIC INSPECTION )

RESULT DESCRIPTION

Result	Go to
Diagnostic code is not output	A
Diagnostic code is output	B

A: Go to next step

B: To CAN communication system (Refer to HOW TO TROUBLESHOOT )

Implementation of SSM4 active test (speed meter)

Using SSM4, display the [Active Test] screen according to the screen and perform check. (Refer to DATA MONITOR/ACTIVE TEST )

SSM4 screen: [Each System] →[Combination Meter] →[Active Test]

Item name	Contents of testing	Check item
[Speedometer]	Vehicle speed indication changeover	240, 200, 160, 120, 80, 40, 0 (km/h)

NOTE: When performing an [Active Test], check if the actual meter reading is within the allowable range of meter reading (Refer to METER & GAUGE SYSTEM ).

RESULT DESCRIPTION

Result	Go to
Each vehicle speed in [Active Test] can be displayed smoothly	A
Each vehicle speed in [Active Test] can not be displayed smoothly	B

A: Go to next step

B: Replacement of the combination meter ASSY (Refer to REMOVAL )

Reading of SSM4 data (vehicle speed)

On the SSM4, navigate to the [Data monitor] display, and check the computer data. (Refer to DATA MONITOR/ACTIVE TEST )
NOTE: Check the speed meter and the reference value of [Data monitor].

SSM4 screen: [Each System] →[Combination Meter] →[Data monitor]

Item name [Symbol]	Description/display range	Normal value	Remarks
[Vehicle Speed] [Speed Meter]	Vehicle speed input value Display range: 0 to 255[km/h]	0 to 255[km/h] Roughly synchronized with actual vehicle speed	Check the reading error of the speed meter

RESULT DESCRIPTION

Result	Go to
The value of [Data monitor] differs from the actual vehicle speed value	A
The value of [Data monitor] almost equals to the actual vehicle speed value	B

A: Go to next step

B: Replacement of the combination meter ASSY (Refer to REMOVAL )

Reading the diagnostic code (VSC system)

Using SSM4, check if any diagnostic code related to the VSC system is output. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES )

RESULT DESCRIPTION

Result	Go to
Diagnostic code is not output	A
Diagnostic code is output	B

A: Go to next step

B: To VSC system (Refer to HOW TO TROUBLESHOOT )

Reading of SSM4 data (vehicle speed)

On the SSM4, navigate to the [Data monitor] display, and check the computer data. (Refer to DATA MONITOR )

NOTE: Check the speed meter and the reference value of [Data monitor].

SSM4 screen: [Each System] →[Brake Control System] →[Data monitor]

Item name [Symbol]	Description/display range	Normal value	Remarks
[Vehicle Speed] [Vhcl Spd]	Vehicle speed output value 0 to 326.4 km/h	0 km/h: When stopping No significant fluctuation: When driving at a constant speed	-

RESULT DESCRIPTION

Result	Go to
The value of [Data monitor] differs from the speed meter	A
The value of [Data monitor] roughly synchronizes with the speed meter	B

A: Go to next step

B: Replacement of the brake actuator ASSY (Refer to REMOVAL )

Replacement of combination meter ASSY

Replace with a new or normally functioning combination meter ASSY (Refer to REMOVAL ) and check the operation of the speed meter.

RESULT DESCRIPTION

Result	Go to
Operates normally	A
Does not operate normally	B

A: Go to next step

B: Replacement of the brake actuator ASSY (Refer to REMOVAL )

Complete (Internal fault of the combination meter ASSY)