Meter / Gauge System (For Sedan) Speedometer Malfunction

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING TECHSTREAM (SPEED METER)

READ VALUE USING TECHSTREAM (SPEED METER)

INSPECT SPEEDOMETER SENSOR

CHECK HARNESS AND CONNECTOR (SPEEDOMETER SENSOR - COMBINATION METER ASSEMBLY)

DESCRIPTION

1. 
   The combination meter assembly controls the speedometer in accordance with vehicle speed signals from the speedometer sensor.
   

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

If DTC U0129 has been stored, troubleshoot the CAN communication system first.

1. Connect the Techstream to the DLC3.
   

2. Turn the ignition switch ON and turn the tester ON.
   

3. Enter the following menus : Body Electrical / Combination Meter / Active Test.
   
   

   Body Electrical / Combination Meter / Active Test::

   
   

   Tester Display	Test Part	Control Range
   Speed Meter Operation	0/40/80/120 mph 0/40/80/120/160/200 km/h	-

   OK:

   Vehicle speed displayed on the tester is approximately the same as that of the speedometer reading.
   

1. Connect the Techstream to the DLC3.
   

2. Turn the ignition switch ON and the tester ON.
   

3. Select the item below from the Data List, and read the value displayed on the Techstream.
   
   

   Body Electrical / Combination Meter / Data List::

   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Vehicle Speed Meter	Vehicle speed / Min.: 0 km/h (0mph), Max.: 255 km/h(158mph)	Almost same as vehicle speed (When vehicle is driving)	-

   OK:

   Vehicle speed displayed on the tester is approximately the same as the actual vehicle speed.
   

1. Remove the speedometer sensor.
   

2. Connect the positive (+) lead from the battery to terminal 1 and the negative(-) lead to terminal 2.
   

3. Connect the positive (+) lead from the tester to terminal 3 and the negative (-) lead to terminal 2.
   

4. Rotate the shaft.
   

5. Check that the voltage output between terminals 2 and 3 varies between 0V and 11V.
   

6. Reinstall the speedometer sensor.
   

1. Disconnect the D1 combination meter assembly connector.
   

2. Disconnect the C21 speedometer sensor connector.
   

3. Measure the resistance
   

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   D1-17 (SI) - C21-3 (SI)	Always	Below 1 Ω
   C21-2 (SE) - Body ground	Always	Below 1 Ω

4. Reconnect the combination meter assembly connector.
   

5. Measure the voltage
   

   Standard voltage:

   Tester Connection	Switch Condition	Specified Condition
   C21-1 (IG+) - Body ground	Ignition switch ON	11 to 14V

6. Reconnect the combination meter assembly and speedometer sensor connectors.