With Buzzer

�jVSpeedometer With Buzzer:

WIRING DIAGRAM

Electronic Speedometer With/without Buzzer:

COMPONENT LOCATION VIEW

Electronic Speedometer With/without Buzzer: Component ID:

COMPONENT ID
111 Electronic speedometer in the main instrument display panel.
112 Sensor, electronic speedometer, on the gearbox.
132 Vehicle speed sensor, in the speedometer.
210 EDU trip computer in the main instrument display panel.
241 SCC trip computer in the centre of the dashboard.
256 Speed warning buzzer, in the centre console's bottom storage compartment.
356 Speed warning control module, at the rear of the bottom storage compartment in the centre console.
376 ETS throttle control module, under left-hand front seat.
430 Saab Trionic control module, in engine bay on the left-hand side of the bulkhead partition.
508 Control module, Cruise Control system, adjacent to the battery tray.
510 Control module, Motronic 2.8.1, in engine bay behind the bulkhead partition.

2-Pin Connectors
H2-9 In the centre console under the front ashtray.
H2-18 In the engine bay behind the engine under the intake manifold.

3-Pin Connectors
H3-20 Behind the main instrument display panel adjacent to the speedometer (ME).
H3-24 Adjacent to speed warning control module 356.

7O-Pin Connector
H70-1 In the engine bay, behind the bulkhead partition.

Grounding Points
G8 Grounding point, dashboard, beside the front left-hand speaker socket.

DESCRIPTION OF OPERATION
Without Buzzer
The car is fitted with an electronic speedometer. Transmission between the gearbox and the speedometer is electronic.

When ignition switch 20 is in the Drive position, current is supplied to pin 1 of the sensor, vehicle speed sensor 132, which sends a pulsed signal to the Cruise Control and speed warning systems, as well as to other systems.

The pulse frequency is 2,458 pulses per kilometer.

Vehicle speed sensor 112 is mounted in the gearbox. It transmits an alternating current, the frequency of which varies with the speed of the car, to electronic speedometer 111 in the main instrument display panel. The pulse frequency of VSS 112 is four times that of VSS 132.

With Buzzer
In certain markets, the speedometer incorporates speed warning buzzer 256 and speed warning control module 356.

FAULT DIAGNOSIS HINTS
1. Check that current is supplied to pin 1 of the speed sensor.
2. Check that there is no open circuit in sensor 112
3. Check the connectors, wiring harness and ground connections.