Speedometer Malfunction: Procedure

1. Check the vehicle specifications.
   RESULT
   
   

   Result	Proceed to
   w/ ABS	A
   w/o ABS	B

B → See step   6 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
5. According to the display on the Techstream, read the Data List.
   ABS/VSC/TRC
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Vehicle Speed	Maximum wheel speed sensor reading Min.: 0 km/h Max.: 326 km/h	Actual vehicle speed	Speed indicated on speedometer

   OK

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

   RESULT
   
   

   Result	Proceed to
   OK	A
   NG (for Hatchback with VSC/Built-in Type Yaw Rate Sensor)	B
   NG (for Hatchback with VSC/Separate Type Yaw Rate Sensor)	C
   NG (for Hatchback without VSC)	D

B → See step   14 

C → See step   16 

D → See step   15 

A: Go to next step 

1. Disconnect the A70*1 or A71*2 brake actuator assembly connector.
   Fig 1: Identifying A70 Or A71 Brake Actuator Assembly Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A70-11 (SP1)*1 - Body ground A71-22 (SP1)*2 - Body ground	Ignition switch ON	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *A	w/ VSC
   *B	w/o VSC
   *a	Front view of wire harness connector (to brake actuator assembly)

3. Reconnect the A70*1 or A71*2 brake actuator assembly connector.
   • *1: w/ VSC
   • *2: w/o VSC

NG → See step   5 

OK: Go to next step 

1. Check the input waveform.
   Fig 2: Identifying Waveform

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Remove the combination meter assembly with the connector(s) still connected.
   2. Connect an oscilloscope to terminal D100-5 (SI) and body ground.
   3. Turn the ignition switch to ON.
   4. Turn the wheel slowly.
   5. Check the signal waveform according to the condition(s) in the table below.

      Standard

      Item	Condition
      Tool setting	5 V/DIV., 20 ms./DIV.
      Condition	Driving at approx. 20 km/h

      TEXT IN ILLUSTRATION
      
      

      *a	Component with harness connected (Combination Meter Assembly)
      *b	Waveform

      OK

      The waveform is displayed as shown in the illustration.

      HINT: 

      As the vehicle speed increases, the cycle of the waveform narrows.

NG → See step   10 

OK → See step   9 

1. Disconnect the D100 combination meter assembly connector.
2. Disconnect the A70*1 or A71*2 brake actuator assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D100-5 (SI) - A70-11 (SP1)*1 D100-5 (SI) - A71-22 (SP1)*2	Always	Below 1 Ω
   D100-5 (SI) - Body ground	Always	10 kΩ or higher

   • *1: w/ VSC
   • *2: w/o VSC

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   11 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
5. According to the display on the Techstream, perform the Active Test.
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Speed Meter Operation	Speedometer	0, 40, 80, 120, 160, 200, 240 (km/h)	Vehicle is stopped and the engine idling

   OK

   Speedometer indication is normal.

NG → See step   12 

OK: Go to next step 

Fig 3: Checking Voltage Output Between Terminals 2 And 3 Varies Between 0V And 11V Using Voltmeter & Battery

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 0 V and 11 V.
   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Speedometer Sensor)

6. Reinstall the speedometer sensor.

NG → REPLACE SPEEDOMETER SENSOR 

OK: Go to next step 

1. Disconnect the D100 combination meter assembly connector.
2. Disconnect the C57 speedometer sensor connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D100-5 (SI) - C57-3 (SI)	Always	Below 1 Ω
   C57-2 (SE) - Body ground	Always	10 kΩ or higher

4. Reconnect the D100 combination meter assembly connector.
5. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   C57-1 (IG+) - Body ground	Ignition switch ON	11 to 14 V

6. Reconnect the C57 speedometer sensor connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   13