Analogue Instruments Speedometer

Analogue Instruments Speedometer

The ABS ECU (C0506) provides the instrument pack (C0230) a pulsed signal on an SB wire. The instrument pack calculates the vehicle speed from this signal and broadcasts it to other systems via the CAN, I, and K buses.

Tachometer

The instrument pack (C0234) receives an engine speed signal from the Engine Control Module (ECM) via the CAN bus on YN (low) and YB (high) wires.

Fuel Level Gauge

The instrument pack (C0234) provides a feed to the LH fuel tank level sensor (C0114) and the RH fuel tank level sensor (C0114) on BRW and BRY wires respectively. Each level sensor is a float operated potentiometer. By measuring the current returned on an NBW (LH) and an NBY (RH) wire, the instrument pack can determine how much fuel is in the tank.

Engine Coolant Temperature (ECT) Gauge The instrument pack (C0234) provides a feed to the ECT sensor (C0169) on an NP wire. The ECT sensor is a Negative Temperature Coefficient (NTC) sensor. As ECT rises, the resistance of the sensor falls. By measuring the signal returned on an NY wire, the instrument pack can determine the ECT.

Warning Lamps

For details on warning lamp operation, refer to the Instruments section of the Service Description and Operation Workshop manual.