Instrument Cluster / Carrier: Testing and Inspection

Combination Meter

DIAGNOSTICS PROCEDURE

If speedometer does not operate, or operates abnormally, check combination meter circuit.

CAUTION: Make sure that trouble code of vehicle speed sensor 2 system appears in electrical system on-board diagnosis

2A1: CHECK POWER SUPPLY FOR COMBINATION METER.

1. Remove combination meter.
2. Turn ignition switch to ON.




3. Measure voltage between combination meter connector and chassis ground.

Connector & terminal
(i12) No.6 (+) - Chassis ground (-):

CHECK: Is the voltage more than 10 V ?

YES: Go to step 2A2.

NO: Repair harness and connector.

NOTE:
In this case, repair the following:
- Open circuit in harness between combination meter and battery.
- Poor contact in coupling connectors (i12) and combination meter connector.

2A2: CHECK GROUND CIRCUIT OF COMBINATION METER.

1. Turn ignition switch to OFF.




2. Measure resistance of harness between combination meter connector and chassis ground.

Connector & terminal
(i12) No.2 (+) - Chassis ground (-):

CHECK: Is the resistance less than 10 Ohm?

YES: Go to step 2A3.

NO: Repair harness and connector.

2A3: CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND VEHICLE SPEED SENSOR 2.

1. Disconnect connector from vehicle speed sensor 2.




2. Measure resistance between combination meter connector and vehicle speed sensor 2 connector.

Connector & terminal
(B17) No.1 - (i10) No.3:

CHECK: Is the resistance less than 10 Ohm?

YES: Go to step 2A4.

NO: Repair or replace wiring harness between combination meter and vehicle speed sensor 2.

2A4: CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND VEHICLE SPEED SENSOR 2.




Measure resistance between vehicle speed sensor 2 connector and combination meter connector.

Connector & terminal
(B17) No.2 - (i10) No.1:

CHECK: Is the resistance less than 10 Ohm?

YES: Go to step 2A5.

NO: Repair or replace wiring harness between combination meter and vehicle speed sensor 2.

2A5: CHECK VEHICLE SPEED SENSOR 2

NOTE:
- If resistance between terminals of vehicle speed sensor 2 is out of specification, the sensor may have a failure.
- If resistance is OK and voltage between terminals of vehicle speed sensor 2 is out of specification, mechanical trouble may be present between vehicle speed sensor 2 and speedometer shaft in transmission.

1. Disconnect connector from vehicle speed sensor 2.




2. Measure resistance between terminals of vehicle speed sensor 2.

Terminals
No.1 - No.2:

CHECK: Is the resistance between 350 Ohm and 450 Ohm?

YES: Go to step 2A6.

NO: Replace vehicle speed sensor 2.

2A6: CHECK VEHICLE SPEED SENSOR 2.

1. Set the vehicle on free roller, or lift-up the vehicle and support with safety stands.

WARNING: Be careful not to be caught up by the running wheels.

2. Drive the vehicle at speed greater than 20 km/h (12 MPH).




3. Measure voltage between terminals of vehicle speed sensor 2.

Terminals
No.1 - No.2:

CHECK: Is the voltage more than 5 V? (AC range)

YES: Repair or replace speedometer.

NO: Replace vehicle speed sensor 2.

2A7: CHECK VEHICLE SPEED SENSOR 2.

NOTE:
Using an oscilloscope:
1. Turn ignition switch to OFF.
2. Set oscilloscope to vehicle speed sensor 2.
3. Drive the vehicle at speed greater than 20 km/h (12 MPH).







4. Measure signal voltage.

Terminals
No.1 - No.2:

CHECK: Is the voltage more than 5 V ?

YES: Repair or replace speedometer.

NO: Replace vehicle speed sensor 2.