Inspection Procedure
WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
If DTC U0129 has been stored, troubleshoot the CAN communication system first.
- PERFORM ACTIVE TEST BY TECHSTREAM (SPEED METER)
- Connect the Techstream to the DLC3.
- Turn the ignition switch ON and turn the tester ON.
- Enter the following menus : Body Electrical / Combination Meter / Active Test.
Body Electrical / Combination Meter / Active Test:
BODY ELECTRICAL / COMBINATION METER / ACTIVE TESTTester Display Test Part Control Range Speed Meter Operation 0 / 40 (24) / 80 (48) /120 (72) /160 (96) / 200 (120) / 240 (144) km/h (mph) - OK:
Vehicle speed displayed on the tester is approximately the same as that of the speedometer reading.
NG: REPLACE COMBINATION METER ASSEMBLY
OK: Go to Next Step
- CHECK BRAKE CONTROL SYSTEM
- Check the brake control system.
Result
RESULT CHARTBrake Control System Proceed to w/ABS A w/o ABS B
B: Go to step 4
A: Go to Next Step
- Check the brake control system.
- READ VALUE OF TECHSTREAM (SPEED METER)
- Connect the Techstream with CAN VIM to the DLC3.
- Turn the ignition switch ON and the tester ON.
- Select the item below from the Data List, and read the value displayed on the Techstream.
Body Electrical / Combination Meter / Data List:
BODY ELECTRICAL / COMBINATION METER / DATA LISTTester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Meter Vehicle speed / Min.: 0 km/h (0 mph), Max.: 255 km/h (158mph) Approximately same as actual vehicle speed (When vehicle is driven) - OK:
Vehicle speed displayed on the tester is approximately the same as the actual vehicle speed.
NG: GO TO BRAKE CONTROL SYSTEM
OK: REPLACE COMBINATION METER ASSEMBLY
- INSPECT SPEEDOMETER SENSOR
- Remove the speedometer sensor.
- Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2.
- Connect the positive (+) lead from the tester to terminal 3 and the negative (-) lead to terminal 2.
- Rotate the shaft.
- Check that the voltage output between terminals 2 and 3 varies between 0 V and 11V.
- Reinstall the speedometer sensor.
NG: REPLACE SPEEDOMETER SENSOR
OK: Go to Next Step
- CHECK HARNESS AND CONNECTOR (SPEEDOMETER SENSOR - COMBINATION METER ASSEMBLY)
- Disconnect the D1 combination meter assembly connector.
- Disconnect the C21 speedometer sensor connector.
- Measure the resistance
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition D1-17 (SI) - C21-3 (SI) Below 1 Ω C21-2 (SE) - Body ground Below 1 Ω - Reconnect the combination meter assembly connector.
- Measure the voltage
Standard voltage
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Condition Specified Condition C21-1 (IG+) - Body ground Ignition switch ON 11 to 14V - Reconnect the combination meter assembly and speedometer sensor connectors.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE COMBINATION METER ASSEMBLY