Instrument Panel, Gauges and Warning Indicators: Testing and Inspection

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.

Connector & terminal (i10) No.7 (+) - Chassis ground (-):

3. Measure voltage between combination meter connector and 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 (i10) and combination meter connector.

2A2: CHECK GROUND CIRCUIT OF COMBINATION METER.
1. Turn ignition switch to OFF.

Connector & terminal (i12) No.8 (+) - Chassis ground (-).:

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

CHECK: Is the resistance less than 10 ohms?

YES: Go to step 2A3.

NO: Repair harness and connector.

2A3: CHECK TRANSMISSION TYPE

CHECK: Is the transmission type MT?

YES: Go to step 2A4.

NO: Go to step 2A8.

2A4: CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND VEHICLE SPEED SENSOR 2.
1. Disconnect connector from vehicle speed sensor 2.

Connector & terminal (B17) No.1 - (i12) No.11:

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

CHECK: Is the resistance less than 10 ohms?

YES: Go to step 2A5.

NO: Repair wiring harness.

2A5: CHECK HARNESS CONNECTOR BETWEEN BATTERY AND VEHICLE SPEED SENSOR 2.
1. Turn ignition switch to ON.

Connector & terminal (B17) No.3 (+) - Chassis ground (-):

2. Measure voltage between vehicle speed sensor 2 connector (B17) and chassis ground.

CHECK: Is the voltage more than 10 V?

YES: Go to step 2A6.

NO: Repair harness connector between battery and vehicle speed sensor 2.

2A6: CHECK HARNESS CONNECTOR BETWEEN VEHICLE SPEED SENSOR 2 AND ENGINE GROUND.
1. Turn ignition switch to OFF.

Connector & terminal (B17) No.2 (+) - Engine ground (-):

2. Measure resistance between vehicle speed sensor 2 connector (B17) and engine ground.

CHECK: Is the resistance less than 10 ohms?

YES: Go to step 2A7.

NO: Repair harness connector between vehicle speed sensor 2 and engine ground.

2A7: CHECK VEHICLE SPEED SENSOR 2.
1. Connect connector to vehicle speed sensor 2.
2. 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.




3. Set oscilloscope to vehicle speed sensor 2 connector terminals.
Positive probe; (B17) No.1
Earth lead; (B17) No.2
4. Drive the vehicle at speed greater than 20 kph (12 MPH).




5. Measure signal voltage indicated on oscilloscope.

CHECK: Is the voltage more than 5 V?

YES: Repair or replace speedometer.

NO: Replace vehicle speed sensor 2.

2A8: CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND AUTOMATIC TRANSMISSION CONTROL MODULE.
1. Disconnect connector from automatic transmission control module.

Connector & terminal (i12) No.11 - (B55) No.13:

2. Measure resistance between combination meter connector (i12) and automatic transmission control module connector (B55).

CAUTION: To measure the voltage and/or resistance, use a tapered pin with a diameter of less than 0.64 mm (0.025 in). Do not insert the pin more than 5 mm (0.20 in).

CHECK: Is the resistance less than 10 ohms?

YES: Go to step 2A9.

NO: Repair harness connector between combination meter and automatic transmission control module.

2A9: CHECK AUTOMATIC TRANSMISSION CONTROL MODULE.
1. Connect connector to automatic transmission control module.
2. Set the vehicle on free roller, or lift-up the vehicle and support with safety stands.

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

3. Drive the vehicle faster than 10 kph (6 MPH).

Connector & terminal (B55) No.13 (+) - Chassis ground (-):

4. Measure voltage between automatic transmission control module connector (B55) and chassis ground.

CAUTION: To measure the voltage and/or resistance, use a tapered pin with a diameter of less than 0.64 mm (0.025 in). Do not insert the pin more than 5 mm (0.20 in).

CHECK: Is the voltage less than 1 V <--> more than 4 V?

YES: Repair or replace speedometer.

NO: Replace automatic transmission control module.