Cruise Control System

TROUBLE CODE 12, 13 AND 21 - Vehicle Speed Sensor 2 System

DIAGNOSIS:
Disconnection or short circuit of vehicle speed sensor 2 system.

Wiring Diagram:

TROUBLE SYMPTOM:
Cruise control cannot be set. (Cancelled immediately.)

CHECK OPERATION OF SPEEDOMETER.

Make sure that speedometer indicates the vehicle speed by driving the vehicle.

CHECK INPUT SIGNAL FOR CRUISE CONTROL MODULE.

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




1. Set the vehicle on free roller, or lift-up the vehicle and support with safety stands.
2. Set oscilloscope to cruise control module connector terminals.

Connector & terminal / (B94) No.19 - Body

3. Start the engine.
4. Shift on the gear position, and keep the vehicle speed at constant.







5. Measure signal voltage.

Specified voltage V: 5 V, min.

NOTE:
- If the vehicle speed increases, the width of amplitude (W) decreases.
- If oscilloscope is not available, check input signal (vehicle speed signal) by using a select monitor. (Refer to the procedure as described.)

- Using the select monitor:
1. Set the vehicle on free roller, or lift-up the vehicle and support with safety stands.
2. Turn ignition switch to OFF and set select monitor.
3. Turn ignition switch to ON.
4. Set select monitor in "F01" or "F02" mode.
5. Drive the vehicle at speed greater than 40 km/h (25 MPH).
6. Check that vehicle speed indication on select monitor and speedometer are equal.

NOTE:
- When there is a disconnection or short circuit in the harness between the meter and the cruise control module, the indicated value will be 0 to 1.0 km/h (0 to 0.6 MPH).
- In "F01" mode, vehicle speed is indicated in mile per hour MPH).

In "F02" mode, vehicle speed is indicated in kilometer per hour km/h).

PERFORM A CIRCUIT TEST BETWEEN COMBINATION METER AND CRUISE CONTROL MODULE.




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




3. Disconnect connector from cruise control module.
4. Measure resistance of harness connector between combination meter and cruise control module,

Connector & terminal / Specified resistance:
(i10) No.10 (B94) No.19 / 10 Ohm, max.




5. Measure resistance of harness connector between cruise control module and body to make sure that circuit does not short.

Connector & terminal / Specified resistance:
(B94) No.19 Body / 1 MOhm, min.

CHECK VEHICLE SPEED SENSOR 2.

1. Disconnect connector from vehicle speed sensor 2.




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

Terminals / Specified resistance:
No.1 - No.2 / 350 - 450 Ohm






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

3. Set the vehicle on free roller, or lift-up the vehicle and support with safety stands.
4. Drive the vehicle at speed greater than 20 km/h (12 MPH),
5. Measure voltage between terminals of vehicle speed sensor 2.

Terminals / Specified voltage:
No.1 - No.2 / 5 V, min. (AC range)







- 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.

Specified voltage V): 5 V, min.