Land Rover Freelander 2004my Electrical Library Rover Manual
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DESCRIPTION AND OPERATION 4.142FREELANDER 04MY Speakers – Harmon Kardon The head unit (C0092) is connected to the power amplifier (C0491) as follows: zA positive signal is provided by the head unit to the power amplifier on a BG wire. This signal is used by the power amplifier for the RH rear speakers. zA negative signal is provided by the head unit to the power amplifier on a BO wire. This signal is used by the power amplifier for the RH rear speakers. zA positive signal is provided by the head unit to the power amplifier on a BP wire. This signal is used by the power amplifier for the RH front speakers. zA negative signal is provided by the head unit to the power amplifier on a BU wire. This signal is used by the power amplifier for the RH front speakers. zA positive signal is provided by the head unit to the power amplifier on a BW wire. This signal is used by the power amplifier for the LH front speakers. zA negative signal is provided by the head unit to the power amplifier on a BS wire. This signal is used by the power amplifier for the LH front speakers. zA positive signal is provided by the head unit to the power amplifier on a BN wire. This signal is used by the power amplifier for the LH rear speakers. zA negative signal is provided by the head unit to the power amplifier on a BR wire. This signal is used by the power amplifier for the LH rear speakers.
DESCRIPTION AND OPERATION FREELANDER 04MY 4.143 The power amplifier (C0491) receives inputs from the head unit (C0092) and relays them to the speakers as follows: NOTE: The LH and RH speakers share the same connector numbers as they utilise the same door harness. zA positive signal is provided by the power amplifier to the RH front mid-range speaker (C1577) on an OK wire. The RH front mid-range speaker (C1577) is provided a negative signal by the power amplifier (C0491) on an OB wire. zA positive signal is provided by the power amplifier to the RH front high range speaker (C0680) on an OK wire. The RH front high range speaker (C0680) is provided a negative signal by the power amplifier (C0491) on an OB wire. zA positive signal is provided by the power amplifier to the LH front mid-range speaker (C1577) on a YK then OK wire. The LH front mid-range speaker (C1577) is provided a negative signal by the power amplifier (C0491) on a YB then OB wire. zA positive signal is provided by the power amplifier to the LH front high range speaker (C0680) on a YK then OK wire. The LH front high range speaker (C0680) is provided a negative signal by the power amplifier (C0491) on an YB then OB wire. zA positive signal is provided by the power amplifier to the RH rear mid-range speaker (C1428) on a UK wire. The RH rear mid-range speaker (C1428) is provided a negative signal by the power amplifier (C0491) on a UB wire. zA positive signal is provided by the power amplifier to the RH rear high range speaker (C0679) on a UK wire. The RH rear high range speaker (C0679) is provided a negative signal by the power amplifier (C0491) on a UB wire. zA positive signal is provided by the power amplifier to the LH rear mid-range speaker (C1428) on an SK then UK wire. The LH rear mid-range speaker (C1428) is provided a negative signal by the power amplifier (C0491) on an SB then UB wire. zA positive signal is provided by the power amplifier to the LH rear high range speaker (C0679) on an SK then UK wire. The LH rear high range speaker (C0679) is provided a negative signal by the power amplifier (C0491) on an SB then UB wire. NOTE: It is essential that all speakers are connected correctly. A speaker connected incorrectly will be out of phase with the remaining speakers, causing a deterioration of sound quality.
DESCRIPTION AND OPERATION 4.144FREELANDER 04MY Speakers – Standard The head unit (C0092) is connected to the speakers as follows: zA positive signal is provided to the RH front mid-range speaker (C1577) on an OK wire. The RH front mid-range speaker (C1577) is provided a negative signal by the head unit (C0092) on an OB wire. zA positive signal is provided to the RH high range speaker (C0680) on an OK wire. The RH high range speaker (C0680) is provided a negative signal by the head unit (C0092) on an OB wire. zA positive signal is provided to the LH front mid-range speaker (C1577) on a YK then OK wire. The LH front mid-range speaker (C1577) is provided a negative signal by the head unit (C0092) on a YB then OB wire. zA positive signal is provided to the LH front high range speaker (C0680) on a YK then OK wire. The LH front high range speaker (C0680) is provided a negative signal by the head unit (C0092) on a YB then OB wire. zA positive signal is provided to the RH rear mid-range speaker (C1428) on a UK wire. The RH rear mid-range speaker (C1428) is provided a negative signal by the head unit (C0092) on a UB wire. zA positive signal is provided to the LH rear mid-range speaker (C1428) on an SK then UK wire. The RH rear mid-range speaker (C1428) is provided a negative signal by the head unit (C0092) on an SB then UB wire. NOTE: The LH and RH front speakers and the LH and RH rear speakers share the same connector numbers as they utilise the same door harness. NOTE: It is essential that all speakers are connected correctly. A speaker connected incorrectly will be out of phase with the remaining speakers, causing a deterioration of sound quality. Remote Interface Unit The remote interface unit (C1897) is provided an ignition feed via fuse 27 of the passenger compartment fuse box (C0580) on an LGW wire. The interface unit enables the head unit to communicate with the remote audio controls, and is earthed on a B wire. The interface unit (C1897) communicates with the head unit (C0922) and the CD autochanger (if fitted) (C0941) via the Instrument (I) bus on a K wire.
DESCRIPTION AND OPERATION FREELANDER 04MY 4.145 Remote Audio Controls The remote interface unit (C1897) provides a feed via the rotary coupler (C0082) to the remote audio controls (C1254) on a BR wire. The remote audio controls contain a number of normally open switches and resistors. When either of the controls are moved, one of the switches closes and a voltage is returned to the interface unit (C1897) on a BW wire. The value of the voltage returned to the interface unit is dependent upon which way the controls are moved (and how many resistors are brought into the circuit). By measuring this returned voltage, the interface unit determines which function has been requested. The interface unit (C1897) converts this input into an Instrument (I) bus protocol message which it outputs to the head unit on a K wire. If a CD autochanger is fitted, this message is also relayed to the CD autochanger (C0941) on a K wire. Speed Dependent Volume Control The ABS ECU (C0501) provides a road speed signal to the power amplifier (C0491) on a WO wire. The amplifier uses this signal to raise or lower the volume level from the speakers as road speed changes. CD Autochanger The CD autochanger (C0941) is provided a constant battery feed via fuse 12 of the passenger compartment fuse box (C0584) on a P wire. The autochanger (C0941) is earthed on a pair of B wires. The CD autochanger (C0941) provides the following signals to the head unit (C0983): zA LH speaker positive signal on a KB wire. zA LH speaker negative signal on a BK then B wire. zA RH speaker positive signal on a YB wire. zA RH speaker negative signal on a BY wire then B wire. Navigation Inputs The ABS ECU (C0501) provides a road speed signal to the Central Control Unit (CCU) (C0428) and the head unit (C0921) on a pair of WO wires. A reverse gear signal is provided by the reverse gear switch (C0166 on K1.8 vehicles, C0163 on Td4 manual vehicles) or the reverse lamp relay (C2624) on automatic transmission vehicles on a pair of GN wires. For detailed information on satellite navigation operation, refer to the Navigation System section of the System Description and Operation Workshop manual.
DESCRIPTION AND OPERATION 4.146FREELANDER 04MY FUEL PUMP DESCRIPTION Td4 The fuel system on Td4 vehicles features a single fuel pump. The low pressure pump is mounted in the RH rear wheel arch, and delivers diesel fuel to the high pressure FIP. For more information on the Td4 fuel system, refer to the Fuel Delivery System – Td4 section of the System Description and Operation Workshop manual. K Series and KV6 The electric fuel pump is mounted in the plastic fuel tank, and supplies fuel at a constant pressure to the fuel rail via a filter. The fuel rail distributes fuel equally to each of the four injectors. The system also incorporates a spill return line, which returns any unused fuel back to the tank. For more information on the K Series and KV6 fuel systems, refer to the Fuel Delivery System – K Series 1.8 and Fuel Delivery System – K Series KV6 sections of the System Description and Operation Workshop manual. OPERATION Td4 General Feed from the positive battery terminal (C0192) is supplied to fusible link 3, fuse 10, and the main relay (C0632) on an R wire. All are located in the engine compartment fuse box. Operation of the main relay (C0576) is controlled by the Engine Control Module (ECM) (C0603) on a WK wire. For more information on main relay operation, refer to the Engine Management Systems – EDC section of the System Description and Operation Workshop manual. Fuse 10 (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on an N wire. When the ignition switch is turned to the ignition position, current flows across the switch (C0028) to fuse 22 of the passenger compartment fuse box (C0588) on a G wire. Fuse 22 (C0580) provides an ignition feed to the ECM (C0603) on a W wire. Inertia Switch Fuse 10 of the engine compartment fuse box (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. The inertia switch is a normally closed switch. If the inertia switch hasnt been tripped, current flows across the switch (C0123) to the fuel pump relay (C0575) on a GU wire.
DESCRIPTION AND OPERATION FREELANDER 04MY 4.147 The inertia switch (C0123) also provides a feed to the Central Control Unit (CCU) (C0428) on a GU then UG wire. For more information on the CCU, refer to the Control Units section of the System Description and Operation Workshop manual, and the Anti-theft Alarm and Central Door Locking (CDL) section of this manual. + ANTI-THEFT ALARM AND CENTRAL DOOR LOCKING (CDL). Fuel Pump Relay The fuel pump relay coil (C0730) receives a feed from the energised main relay, which is also located in the engine compartment fuse box. The earth path for the relay coil (C0575) is controlled by the ECM (C0331) on a BP wire. The energised fuel pump relay enables a feed from fuse 10 of the engine compartment fuse box (C0575) to flow across the relay switch contacts (C0572) to the low pressure fuel pump (C0205) on a WP wire. The pump (C0205) is earthed on a B wire. K Series and KV6 General Feed from the positive battery terminal (C0192) is supplied to fusible link 3, fuse 10, and the main relay (C0632) on an R wire. All are located in the engine compartment fuse box. Operation of the main relay (C0576 on K Series vehicles, C0578 on KV6 vehicles ) is controlled by the Engine Control Module (ECM) (C0913 on K Series vehicles, C0604 on KV6 NAS vehicles, C0371 on KV6 ROW vehicles) on a WK wire (NG on KV6 NAS vehicles). For more information on main relay operation, refer to the Engine Management Systems – MEMS or Engine Management Systems – Siemens section of the System Description and Operation Workshop manual. Fuse 10 (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. Fusible link 3 (C0571) provides a constant battery feed to the ignition switch (C0028) on an N wire. When the ignition switch is turned to the ignition position, current flows across the switch (C0028) to fuse 22 of the passenger compartment fuse box (C0588) on a G wire. Fuse 22 (C0581) provides an ignition feed to the ECM (C0913 on K Series vehicles, C0603 on KV6 NAS vehicles, C0371 on KV6 ROW vehicles) on a W wire. Inertia Switch Fuse 10 of the engine compartment fuse box (C0575) provides a constant battery feed to the inertia switch (C0123) on a G wire. The inertia switch is a normally closed switch. If the inertia switch hasnt been tripped, current flows across the switch (C0123) to the fuel pump relay located in the engine compartment fuse box (C0575) on a GU wire. The inertia switch (C0123) also provides a feed to the Central Control Unit (CCU) (C0428) on a GU then UG wire. For more information on the CCU, refer to the Control Units section of the System Description and Operation Workshop manual, and the Anti-theft Alarm and Central Door Locking (CDL) section of this manual. + ANTI-THEFT ALARM AND CENTRAL DOOR LOCKING (CDL).
DESCRIPTION AND OPERATION 4.148FREELANDER 04MY Fuel Pump Relay The fuel pump relay coil receives a feed from the energised main relay. The earth path for the relay coil (C0575) is controlled by the ECM (C0913 on K Series vehicles, C0331 on KV6 NAS vehicles, C0371 on KV6 vehicles) on a BP wire. The ECM will energise the fuel pump relay when it receives an ignition feed from fuse 6 of the passenger compartment fuse box (C0581) on a W wire. The energised fuel pump relay (C0572) provides a feed to the fuel pump (C0114) on a WP wire. The pump (C0114) is earthed on a B wire.
DESCRIPTION AND OPERATION FREELANDER 04MY 4.149 ROTARY COUPLER DESCRIPTION General The rotary coupler is a rotating link harness, acting as a bridge between the electrical circuits contained within the steering wheel and the steering column. It relays signals for the following systems: zHorns. zAudio system. zDriver airbag. zCruise control. WARNING: Before carrying out any work on the rotary coupler, refer to the warning information given in the Service Procedures Workshop manual. OPERATION General For more information on horn operation, refer to the Horns section of this manual. + HORNS. For more information on audio system operation, refer to the relevant Audio System section of this manual. + AUDIO SYSTEM. + NAVIGATION SYSTEM. For more information on driver airbag operation, refer to the Supplementary Restraint Systems (SRS) section of this manual. + SUPPLEMENTARY RESTRAINT SYSTEM (SRS). For more information on cruise control operation, refer to the relevant Cruise Control section of this manual. + CRUISE CONTROL – TD4 & KV6 (NORTH AMERICA). + CRUISE CONTROL – KV6.
DESCRIPTION AND OPERATION 4.150FREELANDER 04MY PARK DISTANCE CONTROL (PDC) DESCRIPTION General Park Distance Control (PDC) provides an audible warning to the driver when any obstacles are in the path of the vehicle during reverse parking manoeuvres. The system consists of: zFour ultrasonic sensors mounted in the rear bumper. zAn ECU mounted on the RH side of the luggage compartment. zA sounder mounted on the RH side of the luggage compartment. zA non-latching master switch mounted in the rear of the centre console. The non-latching master switch also contains a tell-tale LED to inform the driver the system is operational. When the system is activated, a confirmation tone is emitted as further confirmation the system is operational. The system is only operational when reverse gear is selected and the master switch is pressed (LED illuminated). OPERATION General Feed from the positive battery terminal (C0192) is supplied to fusible link 3 of the engine compartment fuse box (C0632) on an R wire. Fusible link 3 (C0571) is connected to the ignition switch (C0028) by an N wire. When the ignition switch is turned to the ignition position, current flows across the switch (C0028) to fuse 2 of the passenger compartment fuse box (C0588) on an NW wire. Fuse 2 provides an ignition feed to the reverse lamp switch (C0163) on a G wire (manual transmission vehicles only) or the reverse lamp relay (automatic transmission vehicles only), which is located within the passenger compartment fuse box. When in the ignition position, the ignition switch (C0028) also provides a feed to fuse 24 of the passenger compartment fuse box (C0588) on a G wire. Fuse 24 (C2624) provides an ignition feed to the PDC ECU (C0958) on an LGO wire. PDC ECU The PDC ECU will only initiate PDC if reverse gear is selected and the PDC switch is pressed. The PDC ECU monitors driver requests as follows: PDC Switch The PDC ECU (C0958) monitors the condition of the non-latching PDC switch (C0404) by providing a feed on a BS wire. When the switch is pressed, a momentary earth is created on a B wire.
DESCRIPTION AND OPERATION FREELANDER 04MY 4.151 Reverse Lamp Switch – Manual Transmission Only Fuse 2 of the passenger compartment fuse box (C0581) provides an ignition feed to the reverse lamp switch (C0163) on a G wire. When reverse gear is selected, current flows across the switch (C0163 on Td4 vehicles, C0166 on K1.8 vehicles) to the PDC ECU (C0958) on a GN wire. Reverse Lamp Relay – Automatic Transmission Only The Electronic Automatic Transmission (EAT) ECU (C0932) monitors the condition of the transmission selector/inhibit switch (C0268) by providing a feed on a GW wire. When reverse gear is selected, the switch contacts close and an earth path is created on a B wire. Sensing this, the EAT ECU (C0932) provides a feed to the reverse lamp relay coil (C2624) on an NG wire. The relay coil (C0587) is earthed on a B wire. The energised reverse lamp relay (C2624) now provides a feed to the PDC ECU (C0958) on a GN wire. PDC Sensors The PDC ECU provides two different signals to the four PDC sensors. The transmit signal commands the PDC sensors to emit an ultrasonic burst. This is followed by a receive signal, which switches the PDC sensors to listening mode. In this mode, the sensors are able to receive an ultrasonic echo. This process is repeated every 100ms. The PDC ECU (C0957) is connected to the four PDC sensors as follows: RH Outer Sensor The PDC ECU provides signal feeds to the RH outer sensor (C0966) on a WG then W wire. An earth path is provided for the sensor by the PDC ECU on a B then BG wire. The PDC sensor outputs a pulsed signal to the PDC ECU on an O wire, which the ECU translates into a distance reading. RH Inner Sensor The PDC ECU provides signal feeds to the RH inner sensor (C0965) on a WG then W wire. An earth path is provided for the sensor by the PDC ECU on a B then BG wire. The PDC sensor outputs a pulsed signal to the PDC ECU on a Y wire, which the ECU translates into a distance reading. LH Inner Sensor The PDC ECU provides signal feeds to the LH inner sensor (C0964) on a WG then W wire. An earth path is provided for the sensor by the PDC ECU on a B then BG wire. The PDC sensor outputs a pulsed signal to the PDC ECU on a U wire, which the ECU translates into a distance reading.