Speedometer Malfunction

METER: METER / GAUGE SYSTEM: Speedometer Malfunction
- Speedometer Malfunction

DESCRIPTION

The combination meter assembly controls the speedometer in accordance with vehicle speed signals from the speed sensor or skid control ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT COMBINATION METER ASSEMBLY

(a) Shift the shift lever (M/T) or transmission gear selector lever (A/T) to the neutral position.





(b) Jack up the vehicle.

(c) Turn the ignition switch to ON.

(d) Check the voltage while turning the wheel slowly.

Standard:





HINT
The output voltage should fluctuate up and down as shown in the diagram on the left when the wheel is turning slowly.

OK -- REPLACE COMBINATION METER ASSEMBLY Removal
NG -- Continue to next step.

2. CHECK TRANSAXLE TYPE

(a) Check the vehicle's transaxle type.

Result:





B -- READ VALUE USING TECHSTREAM (VEHICLE SPEED)
A -- Continue to next step.

3. INSPECT SPEED SENSOR





(a) Remove the speed sensor.

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

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

(d) Rotate the shaft.

(e) Check that the voltage output between terminals 2 and 3 varies between 0V and 11V.

(f) Reinstall the speed sensor.

NG -- REPLACE SPEED SENSOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (SPEED SENSOR - COMBINATION METER ASSEMBLY)

(a) Disconnect the E13 combination meter assembly connector.





(b) Disconnect the B44 speed sensor connector.

(c) Measure the resistance

Standard resistance:





(d) Reconnect the combination meter assembly connector.

(e) Measure the voltage

Standard voltage:





(f) Reconnect the speed sensor connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE COMBINATION METER ASSEMBLY Removal

5. READ VALUE USING TECHSTREAM (VEHICLE SPEED)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream ON.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

(e) According to the display on the tester, read the Data List.

ABS/VSC/TRAC





OK:

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

NG -- GO TO BRAKE SYSTEM How To Proceed With Troubleshooting

OK -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER ASSEMBLY)

(a) Disconnect the E13 combination meter assembly connector.

(b) Disconnect the A4 skid control ECU connector.

(c) Measure the resistance.





Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE COMBINATION METER ASSEMBLY Removal