METER / GAUGE SYSTEM Speedometer Malfunction
| DTC Code | DTC Name |
|---|---|
| Speedometer Malfunction |
DESCRIPTION
The combination meter assembly receives vehicle speed signals from the brake actuator assembly (skid control ECU) via the CAN communication line. The wheel speed sensors output voltages that vary according to the vehicle speed. The brake actuator assembly (skid control ECU) supplies power to the wheel speed sensors. The brake actuator assembly (skid control ECU) calculates the vehicle speed based on the pulses of the voltage.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
If the vehicle speed is outside the allowable range when tested, perform the on-vehicle inspection (Click here).
When replacing the combination meter assembly, make sure to replace it with a new one.
Before starting the following inspection, check the tire size and tire air pressure.
PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
Check if a CAN communication system DTC is output.
for LHD:Click hereClick hereClick here
for RHD:Click hereClick hereClick here
Result
Proceed to
CAN communication system DTC is not output
CAN communication system DTC is output (for LHD)
CAN communication system DTC is output (for RHD)
CHECK ANTI-LOCK BRAKE SYSTEM OR VEHICLE STABILITY CONTROL SYSTEM
*1: w/o VSC
*2: w/ VSC
Check if an anti-lock brake system*1 or vehicle stability control system*2 DTC is output.
Anti-lock brake system:Click here
Vehicle stability control system:Click here
Chassis > ABS/VSC/TRC > Trouble Codes
Result
Proceed to
DTC is not output
Anti-lock brake system DTC is output (w/o VSC)
Vehicle stability control system DTC is output (w/ VSC)
Vehicle stability control system DTC is output (w/ VSC) GO TO VEHICLE STABILITY CONTROL SYSTEM
PERFORM ACTIVE TEST USING GTS (SPEED METER OPERATION)
Using the GTS, perform the Active Test.
Body Electrical > Combination Meter > Active Test
Tester Display
Measurement Item
Control Range
Diagnostic Note
Speed Meter Operation
Speedometer
OFF, 0, 40, 80, 120, 160 or 200 (km/h or mph)
Acceptable range (km/h or mph): [Control range → Speedometer display]
for km/h
40 → 41.7 to 46.2
80 → 83.4 to 88.4
120 → 125.1 to 130.6
160 → 166.2 to 173.2
200 → 207.7 to 215.7
for mph
40 → 40 to 43.5
80 → 80 to 84.5
120 → 100 to 125.5
Body Electrical > Combination Meter > Active Test
Tester Display
Speed Meter Operation
OK
Speedometer indication is normal.
Result
Proceed to
OK
NG
READ VALUE USING GTS (VEHICLE SPEED METER, VEHICLE SPEED)
Using the GTS, read the Data List.
Body Electrical > Combination Meter > Data List
Tester Display
Measurement Item
Range
Normal Condition
Diagnostic Note
Vehicle Speed Meter
Vehicle speed
Min.: 0 mph (0 km/h), Max.: 255 km/h (158 mph)
Almost same as actual vehicle speed measured using a speedometer tester
-
Chassis > ABS/VSC/TRC > Data List
Tester Display
Measurement Item
Range
Normal Condition
Diagnostic Note
Vehicle Speed
Vehicle speed
Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph)
Almost same as actual vehicle speed measured using a speedometer tester
-
Body Electrical > Combination Meter > Data List
Tester Display
Vehicle Speed Meter
Chassis > ABS/VSC/TRC > Data List
Tester Display
Vehicle Speed
Tip:When the Data List values of the ECUs match, an internal malfunction of the combination meter assembly is suspected.
When the Data List values of the ECUs do not match, a signal output error of the brake actuator assembly (skid control ECU) or an internal malfunction of the combination meter assembly is suspected.
Result
Proceed to
The Data List values of the ECUs match
The Data List values of the ECUs do not match
CHECK COMBINATION METER ASSEMBLY
Replace the combination meter assembly with a new or normally functioning one.
Check that the operation of the speedometer returns to nomal.
OK
The operation of the speedometer returns to normal.
Result
Proceed to
OK
NG (w/o VSC)
NG (w/ VSC)
OK END (COMBINATION METER ASSEMBLY WAS DEFECTIVE)