Land Rover Range Rover Electronic Arir Suspension Rover Manual
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EAS - System Information Document © Rover Group 1998Page 21 of 32 NOTE: Range Rover Classic connectors shown are for 1995 MY vehicles. Most descriptions and colors are the same for 1993 MY and 1994 MY, but connector numbers may differ. Refer to the ETM for clarification if required. C311 Main Harness Connector PositionColorDescription 1. -- 2. White/YellowKey-on Power to Delay Relay 3. BlackGround E300 4. Orange/WhiteBattery Power Feed 5. White/SlateEngine Speed, Alternator Tap 6. Black/BlueHand Brake Input (Manual Transmission only) 7. -- 8. -- 9. Black/RedPark Input, OV in Park 10. Purple/BlueDoor Input from MFU, Grounded when Open 11. Brown/PinkPower Feed to 30A maxifuse 12. Green/PurpleBrake Input, 12V Brakes Applied 13. Yellow/PinkRoad Speed, 12V Square wave 14. -- C330 Switch Harness Connector PositionColorDescription 1. -- 2. YellowInstrument Cluster Lamp Control 3. 4. 5. Yellow/BlueSwitch Common 6. Yellow/RedUp lamp Signal 7. -- 8. -- 9. Yellow/BrownUp Switch Input 10. Yellow/SlateInhibit Switch Input 11. Yellow/WhiteDown Lamp Signal 12. Yellow/OrangeDown Switch Input 13. --
EAS - System Information Document © Rover Group 1998Page 22 of 32 NOTE: Range Rover Classic connectors shown are for 1995 MY vehicles. Most descriptions and colors are the same for 1993 MY and 1994 MY, but connector numbers may differ. Refer to the ETM for clarification if required. C332Valve Block Connector PositionColorDescription 1. Green/WhiteRear left Valve, 12V to Open Valve 2. Green/YellowRear right Valve, 12V to Open Valve 3. Green/BrownFront left Valve, 12V to Open Valve 4. Green/PinkFront right Valve, 12V to Open Valve 5. Green/SlateInlet Valve, 12V to Open Valve 6. Green/OrangeExhaust Valve, 12V to Open Valve 7. *Slate/GreenPressure Switch 12V Power 8. Brown/Lt GreenDiaphragm Valve, 12V to Open Valve 9. *Slate/BluePressure Switch 12V Signal to ECU 10. BlackGround 11. BlackGround 12. Slate/Red12V Power from Delay Relay 13. Slate/Red12V Power from Delay Relay * For vehicles with valve block mounted switch. Valve Block to Valve Driver Connector (Not shown in ETM) PositionColorDescription 1 WhiteRear Left Valve Hit and Drop Control 2 Red/WhiteRear Left Valve 12 Volt 3 -- 4 Red/OrangeExhaust Valve 12 Volt 5 OrangeExhaust Valve Hit and Drop Control 6 Red/BrownFront Left Valve 12 Volt 7 Red/BlackInlet Valve 12 Volt 8 PinkFront Right Valve Hit and Drop Control 9 YellowRear Right Valve Hit and Drop Control 10 BrownFront Left Valve Hit and Drop Control 11 SlateInlet Valve Hit and Drop Control 12 Red/PinkFront Right Valve 12 Volt 13 Red/L GreenRear Right Valve 12 Volt
EAS - System Information Document © Rover Group 1998Page 23 of 32 NOTE: Range Rover Classic connectors shown are for 1995 MY vehicles. Most descriptions and colors are the same for 1993 MY and 1994 MY, but connector numbers may differ. Refer to the ETM for clarification if required. C333 Compressor Connector PositionColorDescription 1. -- 2. Black/OrangeThermal Switch Monitor, Open to EnterCooling Period 3. BlackGround E300 4. Brown/L GreenPower from Compressor Relay Typical Height Sensor: C359, C360, C432, and C433 PositionColorDescription 1. Refer to C331Height Sensor Source, 5V from ECU 2. Refer to C331Height Sensor Wiper, Voltage is Heightdependent 3. Black/SlateHeight Sensor Ground C362Delay Relay Connector PositionColorDescription 30Orange/WhiteBattery Power from F6 (15A Fuse in SatelliteBox 2) 85Black/PinkGround Through Diagnostic Connector 86White/YellowKey-on Power from F13 (10A Fuse in FasciaFusebox, 87Slate/RedPower to ECU, Valve Block, and PressureSwitch 87aPurple/BlueDoor Input from MFU, Grounded when Open C365Diagnostic Connector PositionColorDescription 1. White/PinkSerial Communications RECEIVE 2. -- 3. Black/PinkGround to Pin 85 of Delay Relay, C362 4. White/L GreenSerial Communication TRANSMIT 5. BlackGround C377Pressure Switch Connector (switch on reservoir) PositionColorDescription 1. Slate/Green12V from Delay Relay via 1K Resistor 2. Slate/BlueOutput, 12V when Closed
EAS - System Information Document © Rover Group 1998Page 24 of 32 RANGE ROVER CLASSIC See note on previous page. C331 ECU Connector PositionColorDescription 1. Slate/RedPower from Delay relay 2. Orange/BlueRear Left Height Sensor Source 5V 3. Orange/BlackFront Left Height Sensor Source 5V 4. Red/BlueRear Left Height Sensor Input Voltage 5. Red/BlackFront Left Height Sensor Input Voltage 6. Black/YellowWarning Lamp Relay Control, Ground to Turn Lamp OFF 7. Yellow/WhiteDown Lamp, Ground to Illuminate 8. Slate/YellowCompressor Relay Driver 9. Green/OrangeExhaust Valve, 12V to Open Valve 10. Green/BrownFront Left Valve, 12V to Open Valve 11. Green/WhiteRear Left Valve, 12V to Open Valve 12. White/SlateEngine Speed Input, Alternator Phase Tap 13. Slate/BluePressure Switch Input, 12V when Switch Closed 14. Purple/RedPark/Hand Brake Input, Ground to enable Access Mode 15. Yellow/SlateInhibit Switch Input, Connects to Pin 29 when Inhibited 16. Black/OrangeThermal Switch Monitor, Open Circuit to Begin Cooling Cycle 17. White/PinkSerial Communications RECEIVE 18. BlackGround, E300 19. SlateWarning Lamp Relay Source, 12V to Turn Lamp OFF 20. Orange/YellowRear Right Height Sensor Source 5V 21. Orange/PinkFront Right Height Sensor Source 5V 22. Red/YellowRear Right Height Sensor Input Voltage 23. Orange/PinkFront Right Height Sensor Input Voltage 24. Black/SlateHeight Sensor Ground 25. Yellow/RedUp Lamp, Ground to Illuminate 26. Green/SlateInlet Valve, 12V to Open Valve 27. Green/PinkFront Right Valve, 12V to Open Valve 28. Green/YellowRear Right Valve, 12V to Open Valve 29. Yellow/BlueHeight Switch Common 30. Yellow/PinkRoad Speed Input, 12V Square Wave, 8,000 Pulses per Mile 31. Green/PurpleBrake Switch Input, 12V with Brakes Applied 32. Yellow/BrownUp Switch Input, Connects to Pin 29 when Pressed 33. Yellow/OrangeDown Switch input, Connects to Pin 29 when Pressed 34. Purple/SlateDoor Input, Ground with Door Open or Disable Switch ON 35. White/L. GreenSerial Communications TRANSMIT
EAS - System Information Document © Rover Group 1998Page 25 of 32 NEW RANGE ROVER CONNECTOR DETAILS C117 ECU Connector PositionColorDescription 1. Slate/GreenPower from Delay relay 2. Orange/SlateRear Left Height Sensor Source 5V 3. Orange/BlueFront Left Height Sensor Source 5V 4. Orange/PinkRear Left Height Sensor Input Voltage 5. Orange/GreenFront Left Height Sensor Input Voltage 6. -- 7. Blue/PinkLamp Control and Message to BeCM 8. GreenCompressor Relay Driver 9. Green/SlateExhaust Valve, 12V to Open Valve 10. Green/BlackFront Left Valve, 12V to Open 11. Green/WhiteRear Left Valve, 12V to Open Valve 12. SlateEngine Speed Input, from BeCM C114 13. Slate/BluePressure Switch Input, 12V when Switch Closed 14. Black/PinkPark/Hand Brake Input, From BeCM C112, Ground to enable AccessMode 15. Yellow/SlateInhibit Switch Input, Ground when pressed 16. Black/PurpleThermal Switch Monitor, Open Circuit to Begin Cooling Cycle 17. White/PinkSerial Communications RECEIVE 18. BlackGround E154 19. -- 20. Orange/RedRear Right Height Sensor Source 5V 21. Orange/PinkFront Right Height Sensor Source 5V 22. Orange/BrownRear Right Height Sensor Input Voltage 23. Orange/YellowFront Right Height Sensor Input Voltage 24. Black/PinkHeight Sensor Ground 25. Blue/WhiteLamp Control and Message to BeCM 26. Green/OrangeInlet Valve, 12V to Open Valve 27. Green/PinkFront Right Valve, 12V to Open Valve 28. Green/YellowRear Right Valve, 12V to Open Valve 29. -- 30. YellowRoad Speed Input from BeCM C112, 12V square Wave 31. Green/PurpleBrake Switch Input, 12V with Brakes Applied 32. Yellow/OrangeUp Switch Input, Ground when Pressed 33. Yellow/BrownDown Switch Input, Ground when Pressed 34. Purple/SlateDoor Input from BeCM C112, Ground with Door Open 35. White/L. GreenSerial Communications TRANSMIT
EAS - System Information Document © Rover Group 1998Page 26 of 32 NEW RANGE ROVER C118Delay Relay Connector PositionColorDescription 1 -- 2 Purple/RedBattery Power from 10A F44 3 Slate/RedRelay Interrupt from C231, Pull Low to Open Relay 4 WhiteKey ON Signal from 5A F24 5 Purple/OrangeDoor Input to Wake Up if Key is Off 6 BlackGround, E148 7 -- 8 Slate/GreenPower to ECU, Valve Block, and Pressure Switch 9 -- C139Valve Block to Valve Driver Connector PositionColorDescription 14 WhiteRear Left Valve Hit and Drop Control 15 Red/WhiteRear Left Valve 12 Volt 16 -- 17 Red/OrangeExhaust Valve 12 Volt 18 OrangeExhaust Valve Hit and Drop Control 19 Red/BrownFront Left Valve 12 Volt 20 Red/BlackInlet Valve 12 Volt 21 PinkFront Right Valve Hit and Drop Control 22 YellowRear Right Valve Hit and Drop Control 23 BrownFront Left Valve Hit and Drop Control 24 SlateInlet Valve Hit and Drop Control 25 Red/PinkFront Right Valve 12 Volt 26 Red/L GreenRear Right Valve 12 Volt C142Diaphragm Valve Connector PositionColorDescription 1. Green12V Power from Compressor Relay 2. BlackGround to C152, Pin 11 C151Compressor Connector PositionColorDescription 1. -- 2. Black/PurpleThermal Switch Monitor, Open to Enter Cooling Period 3. BlackGround, E154 4. Purple/Lt GreenPower Supply
EAS - System Information Document © Rover Group 1998Page 27 of 32 NEW RANGE ROVER C152Valve Block Connector from ECU PositionColorDescription 1. Green/WhiteRear Left Valve, 12V to Open Valve 2. Green/YellowRear Right Valve, 12V to Open Valve 3. Green/BlackFront Left Valve, 12V to Open Valve 4. Green/PinkFront Right Valve, 12V to Open Valve 5. Green/OrangeInlet Valve, 12V to Open Valve 6. Green/SlateExhaust Valve, 12V to Open Valve 7. Slate/GreenDelay Relay to Pressure Switch 12V Power 8. Purple/Lt GreenDiaphragm Valve, 12V to Open Valve 9. Slate/BluePressure Switch 12V Signal to ECU 10. BlackGround, E148 11. BlackGround, E148 12. Slate/Green12V Power from Delay Relay to Valve Driver 13. Slate/Green12V Power from Delay Relay to Valve Driver C213Rocker Switch Connector PositionColorDescription 1. Blue/WhiteLamp control from BeCM C114, ECU Pin 25 2. Red/WhiteIllumination 3. WhitePower from BeCM 10A F17 4. Blue/PinkLamp Control from BeCM C114, ECU Pin 7 5. Purple/BlackWade Height Input to BeCM C114 6. Yellow/BrownDown Switch Input, Ground when Pressed 7. BlackGround E252 8. Yellow/OrangeUp Switch Input, Ground When Pressed C214Inhibit Switch Connector PositionColorDescription 1. BlackGround E252 2. Red/WhiteIllumination 3. Yellow/SlateJumper to Same Connector, Pin 5 4. BlackGround E252 5. Yellow/SlateInhibit Input, Ground to Inhibit 6. WhitePower from BeCM 10A F17 Typical Height Sensor-C108, C146, C147, C168 PositionColorDescription 1. Refer to C117Height Sensor Source, 5V from ECU 2. Refer to C117Height Sensor Wiper, Voltage is Height dependent 3. Black/PinkHeight Sensor Ground
EAS - System Information Document © Rover Group 1998Page 28 of 32 PNEUMATIC DIAGRAMS The following diagrams apply to New Range Rover. As stated before, the Classic system is essentially the same with the exception of extension pipes for the exhaust silencer and inlet filter. Additionally, later Classics had the pressure switch located on the valve block. Range Rover Classic Valve Block Quick Reference Table Port NumberDestinationColor Tag 1. Rear Left Air SpringRed 2. Rear Right Air SpringBlue 3. Front Left Air SpringYellow 4. Front Right Air SpringGreen 5. Dryer- 6. ReservoirBrown 7. Dryer- 8. Pressure reliefScrew-on Valve 9. ExhaustViolet 10. Compressed Air InletCompression fitting 11. Diaphragm Exhaust- 12. Pressure Switch (with later style valve block)Screw-on switch New Range Rover Valve Block Quick Reference Table Port NumberDestinationColor Tag 1. Rear Left Air SpringRed 2. Rear Right Air SpringBlue 3. Front Left Air Spring- 4. Front Right Air SpringGreen 5. Dryer- 6. ReservoirViolet 7. Dryer- 8. Pressure ReliefScrew-on Valve 9. ExhaustScrew-on Filter 10. Compressed Air InletCompression Fitting 11. Diaphragm Exhaust- 12. Pressure SwitchScrew-on Switch
EAS - System Information Document © Rover Group 1998Page 29 of 32 1. Air compressor runs and supplies pressure to system. 2. Diaphragm solenoid is ON. 3. The diaphragm valve is closed forcing air through the dryer and into valve block. 4. The inlet valve is closed forcing air through to the reservoir. 5. The pressure switch turns off the compressor when specified pressure is achieved.
EAS - System Information Document © Rover Group 1998Page 30 of 32 1. The rear air spring valves are opened allowing air pressure to escape. 2. The inlet valve is closed and the exhaust valve is opened to allow pressure to escape. 3. The diaphragm solenoid is OFF allowing the diaphragm valve to lift off its seat and pass air to the exhaust silencer.