Speedometer Malfunction
METER: METER / GAUGE SYSTEM: Speedometer Malfunction
Speedometer Malfunction
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED)
(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the tester ON.
(d) On the tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / VEHICLE SPD.
(e) Read the value displayed on the tester.
OK:
Vehicle speed displayed on the tester is almost the same as the actual vehicle speed.
NG -- GO TO BRAKE CONTROL SYSTEM
OK -- Continue to next step.
2. INSPECT COMBINATION METER ASSEMBLY
(a) Shift the transmission gear selector lever to the neutral position.
(b) Jack up the vehicle.
(c) Turn the ignition switch to ON.
(d) Check the voltage while the wheel is turning slowly.
Standard Voltage:
HINT: The output voltage should fluctuate up and down as shown in the diagram on the left when the wheel is turning slowly.
Result:
C -- CHECK HARNESS AND CONNECTOR (VEHICLE SPEED SENSOR - COMBINATION METER ASSEMBLY)
A -- REPLACE COMBINATION METER ASSEMBLY
B -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER ASSEMBLY)
(a) Disconnect the C9 combination meter connector.
(b) With VSC: Disconnect the S1 skid control ECU connector.
(c) Without VSC: Disconnect the S1 combination meter connector.
(d) Measure the resistance.
Standard Resistance:
With VSC
Without VSC
(e) Reconnect the skid control ECU connector.
(f) Reconnect the combination meter connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- GO TO BRAKE CONTROL SYSTEM
4. CHECK HARNESS AND CONNECTOR (VEHICLE SPEED SENSOR - COMBINATION METER ASSEMBLY)
(a) Disconnect the C9 combination meter connector.
(b) Disconnect the V1 vehicle speed sensor connector.
(c) Measure the resistance.
Standard Resistance:
(d) Measure the voltage.
Standard Voltage:
(e) Reconnect the vehicle speed sensor connector.
(f) Reconnect the combination meter connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE COMBINATION METER ASSEMBLY