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FRONT SUSPENSION DESCRIPTION AND OPERATION 60-19 When system faults are detected by the ECU, the ACE warning lamp in the instrument pack is illuminated by the ECU The ACE ECU supplies a control current to the pressure control valve in the valve block. The current supplied by the Power is supplied to the two solenoid operated directional control valves (DCV's) in the valve block by the ECU. The pressure transducer in the valve block receives a 5 V supply from the ECU. The pressure transducer measures 2 ) and returns a linear output voltage to the ECU dependent on hydraulic pressure. The ECU supplies a 5 V current to each of the accelerometers. Each accelerometer is capable of measuring lateral ± 1.10 g. An analogue input to the ECU of between 0.5 and 4.5 V relative to the lateral acceleration sensed is returned by each accelerometer. The ECU processes the two signals received to produce a ACE ECU connector pin details Pin No. Description Input/Output 1 Not used - 2 Not used - 3 Spare Input 4 Not used - 5 Road speed Input 6 ARC relay Output 7 to 9 Not used - 10 K line (diagnostics) - 11 Ignition switch Input 12 Accelerometer - lower (supply) Output 13 Pressure transducer (supply) Output 14 Reverse switch Input 15 Accelerometer - lower (signal) Input 16 Pressure transducer (signal) Input 17 Accelerometer - upper (signal) Input 18 Accelerometer - upper (supply) Output 19 Engine speed Input 20 Main earth 1 - |