Speedometer Malfunction: Procedure
- CHECK CAN COMMUNICATION SYSTEM
- Check if a CAN communication DTC is output. Refer to DIAGNOSIS SYSTEM
.RESULT
Result Proceed to CAN communication DTC is not output A CAN communication DTC is output B
B → See step 6
A: Go to next step
- Check if a CAN communication DTC is output. Refer to DIAGNOSIS SYSTEM
.
- PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER OPERATION)
- Use the Active Test to check the operation of the speedometer. Refer to DATA LIST / ACTIVE TEST
.COMBINATION METER
Tester Display Test Part Control Range Diagnostic Note Speed Meter Operation Speedometer 0, 40, 80, 120, 160, 200 mph*1 Confirm that the vehicle is stopped with the engine idling. 0, 40, 80, 120, 160, 200 km/h*2 - *1: for U.S.A.
- *2: except U.S.A.
OK
Speedometer indication is normal.
NG → See step 7
OK: Go to next step
- Use the Active Test to check the operation of the speedometer. Refer to DATA LIST / ACTIVE TEST
.
- READ VALUE USING TECHSTREAM (VEHICLE SPEED METER)
- Use the Data List to check if the speedometer is operating properly. Refer to DATA LIST / ACTIVE TEST
.COMBINATION METER
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 the same as actual vehicle speed measured using a speedometer tester - OK
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
NG → See step 4
OK → See step 7
- Use the Data List to check if the speedometer is operating properly. Refer to DATA LIST / ACTIVE TEST
.
- READ VALUE USING TECHSTREAM (FR/FL/RR/RL WHEEL SPEED)
- Use the Data List to check the wheel speed. Refer to DATA LIST / ACTIVE TEST
.ABS/VSC/TRAC
Tester Display Measurement Item/Range Normal Condition Diagnostic Note FR Wheel Speed Vehicle speed/Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed measured using a speedometer tester - FL Wheel Speed Vehicle speed/Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed measured using a speedometer tester - RR Wheel Speed Vehicle speed/Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed measured using a speedometer tester - RL Wheel Speed Vehicle speed/Min.: 0 mph (0 km/h), Max.: 326 km/h (202 mph) Almost the same as actual vehicle speed measured using a speedometer tester - OK
Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
NG → See step 8
OK: Go to next step
- Use the Data List to check the wheel speed. Refer to DATA LIST / ACTIVE TEST
.
- REPLACE MASTER CYLINDER SOLENOID
- Replace the skid control ECU with a new or normally functioning one. Refer to DISASSEMBLY
.
OK
The operation of the speedometer returns to normal.
NG → See step 7
OK → END
- Replace the skid control ECU with a new or normally functioning one. Refer to DISASSEMBLY
.
- GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL
- GO TO VEHICLE STABILITY CONTROL SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING