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Engine Management System - Siemens Land Rover Freelander L314

Engine Control Systems 35 illustrations ~2060 words

Scheme 1

Scheme 1: Remove
Scheme 1: Remove

Scheme 2

Scheme 2
Scheme 2
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. Refer to «REMOVAL»(ref-158807-S40842740032005011300000) .
  3. RH bank only: Release locking clips and disconnect multiplugs from plug top coils.
  4. RH bank only: Remove 6 bolts securing plug top coils to RH camshaft cover and remove coils.
  5. LH bank only: Noting their fitted positions, disconnect ht leads.
  6. Using a 16 mm plug socket, remove spark plugs from both cylinder heads.

Refit

  1. Set gap of each new spark plug to 1.00 mm.
  2. Fit spark plugs and tighten to 25 Nm (18 lbf.ft).
  3. LH bank only: Connect ht leads.
  4. RH bank only: Fit plug top coils to spark plugs.
  5. RH bank only: Fit bolts securing plug top coils to RH camshaft cover and tighten to 9 Nm (6.5 lbf.ft).
  6. RH bank only: Connect multiplugs to plug top coils and secure with locking clips.
  7. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  8. Connect battery earth lead.

Scheme 3

Scheme 3: Remove
Scheme 3: Remove
  1. Disconnect battery earth lead.
  2. Remove the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  3. Release locking clips and disconnect multiplugs from plug top coils.
  4. Remove 6 bolts securing plug top coils to cylinder heads.
  5. Pull to release and remove 6 plug top coils from cylinder heads.
  6. Using a 16 mm plug socket, remove spark plugs from cylinder heads.
  1. Check and if necessary set spark plug gap. Refer to spark plug information in Petrol Engine tables in «GENERAL DATA»(/land-rover/freelander/l314-2003-2006/remont/axle-shafts/#general-data) .
  2. Fit spark plugs and tighten to 25 Nm (18 lbf.ft).
  3. Apply a rubber lubricant to plug top coil lower seals and fit coils fully into cylinder heads.
  4. Fit bolts securing plug top coils and tighten to 10 Nm (7 lbf.ft).
  5. Connect and secure multiplugs to plug top coils.
  6. Fit the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  7. Connect battery earth lead.

Scheme 4

Scheme 4: Remove
Scheme 4: Remove
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Release ht lead from plug top coil.
  4. Release locking clip and disconnect multiplug from plug top coil.
  5. Remove nut, release earth lead, remove bolt securing plug top coil to LH inlet manifold and remove coil.
  1. Fit plug top coil to LH inlet manifold, position earth lead, fit and tighten nut and bolt to 9 Nm (6.5 lbf.ft).
  2. Connect multiplug to plug top coil and secure with locking clip.
  3. Connect ht lead to plug top coil.
  4. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  5. Connect battery earth lead.
  6. If a new plug top coil has been fitted, reset ECM adaptions using T4.

Scheme 5

Scheme 5: Remove
Scheme 5: Remove
  1. Disconnect battery earth lead.
  2. Remove the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  3. Withdraw multiplug lock, release and disconnect plug top coil multiplug.
  4. Remove bolt securing plug top coil to camshaft rocker cover.
  5. Remove plug top coil from camshaft rocker cover.
  1. Apply a rubber lubricant to plug top coil, lower seal.
  2. Fit plug top coil to camshaft rocker cover, fit bolt and tighten to 5 Nm (3.7 lbf.ft).
  3. Fit and secure plug top coil multiplug.
  4. Fit the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  5. Connect the battery earth lead.
  6. If a new plug top coil has been fitted, reset ECM adaptions using T4.

Scheme 6

Scheme 6: Remove
Scheme 6: Remove
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Release locking clip and disconnect multiplug from plug top coil.
  4. Remove 2 bolts securing plug top coil to RH camshaft cover.
  5. Release and remove plug top coil from spark plug.
  1. Position and fit plug top coil to spark plug.
  2. Fit bolts securing plug top coil to RH camshaft cover and tighten to 9 Nm (6.5 lbf.ft).
  3. Connect multiplug to plug top coil and secure with locking clip.
  4. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  5. Connect battery earth lead.
  6. If a new plug top coil has been fitted, reset ECM adaptions using T4.

Scheme 7

Scheme 7: Remove
Scheme 7: Remove
  1. Disconnect battery earth lead.
  2. Remove the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  3. Withdraw multiplug lock, release and disconnect plug top coil multiplug.
  4. Remove bolt securing plug top coil to camshaft rocker cover.
  5. Remove plug top coil from camshaft rocker cover.
  1. Apply a rubber lubricant to plug top coil, lower seal.
  2. Fit plug top coil to camshaft rocker cover, fit bolt and tighten to 5 Nm (3.7 lbf.ft).
  3. Fit and secure plug top coil multiplug.
  4. Fit the engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  5. Connect the battery earth lead.
  6. If a new plug top coil has been fitted, reset ECM adaptions using T4.

Scheme 8

Scheme 8: Remove
Scheme 8: Remove

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10
  1. Disconnect battery earth lead.
  2. Remove 5 Allen screws securing cover to 'E' box and remove cover.
  3. Release latch and disconnect multiplug from ECM.
  4. Remove ECM from 'E' box.
  1. Fit ECM into 'E' box.
  2. Position and connect multiplug to ECM and secure latch.
  3. Fit 'E' box cover and tighten Allen screws to 2 Nm (1.5 lbf.ft).
  4. Connect battery earth lead.
  5. If a new ECM has been fitted, reset adaptions using T4.

Scheme 11

Scheme 11: Remove
Scheme 11: Remove

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13
  1. Disconnect battery earth lead.
  2. Remove 5 Allen screws and 'E' box cover.
  3. Disconnect 5 multiplugs from engine ECM.
  4. Release 2 clips and remove ECM.
  1. Fit ECM and connect multiplugs.
  2. Fit 'E' box cover and tighten Allen screws to 2 Nm (1.5 lbf.ft).
  3. Connect battery earth lead.
  4. Initiate ECM using T4. CAUTION: The ECM can only be re-programmed a maximum of 20 times.

Scheme 14

Scheme 14: Remove
Scheme 14: Remove

Scheme 15

Scheme 15
Scheme 15
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Disconnect multiplug from IACV.
  4. Depress locking collar and release vacuum hose from IACV housing.
  5. Remove 2 Allen bolts securing IACV to throttle body.
  6. Remove IACV and discard gasket.
  1. Clean mating faces of IACV and throttle body.
  2. Fit new gasket to IACV.
  3. Position IACV to throttle body, fit and tighten Allen bolts.
  4. Connect vacuum hose to IACV.
  5. Connect multiplug to IACV.
  6. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  7. Connect battery earth lead.

Scheme 16

Scheme 16: Remove
Scheme 16: Remove
  1. Disconnect multiplug from IAT sensor.
  2. Release clip and remove IAT sensor. Discard seal.
  1. Clean IAT sensor and mating face.
  2. Fit new seal to sensor.
  3. Fit IAT sensor and connect multiplug.

Scheme 17

Scheme 17: Remove
Scheme 17: Remove
  1. Disconnect battery earth lead.
  2. Remove thermostat. Refer to «PRESSURE RELIEF THERMOSTAT (PRT)»(/land-rover/freelander/l314-2003-2006/remont/cooling-system-mechanical/#cooling-system-k-series-kv8-description-operation__pressure-relief-thermostat-prt) .
  3. Disconnect multiplug from coolant temperature sensor.
  4. Remove coolant temperature sensor and discard sealing washer.
  5. Remove coolant temperature sensor from cylinder block.
  6. Remove steel shim and sealing washer from temperature sensor, discard sealing washer.
  1. Clean coolant temperature sensor and mating face on cylinder block.
  2. Fit new sealing washer, then steel shim to coolant temperature sensor.
  3. Position coolant temperature sensor and tighten to 17 Nm (12.5 lbf.ft).
  4. Fit thermostat. Refer to «PRESSURE RELIEF THERMOSTAT (PRT)»(/land-rover/freelander/l314-2003-2006/remont/cooling-system-mechanical/#cooling-system-k-series-kv8-description-operation__pressure-relief-thermostat-prt) .
  5. Connect battery earth lead.

Scheme 18

Scheme 18: Remove
Scheme 18: Remove

Scheme 19

Scheme 19
Scheme 19
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Disconnect CKP sensor multiplug from engine harness.
  4. Remove underbelly panel. Refer to «REMOVAL & INSTALLATION»(ref-159181-S00917112562004051800000) .
  5. Remove bolt securing CKP sensor to gearbox housing and remove sensor.
  1. Clean CKP sensor and mating face.
  2. Position CKP sensor, fit and tighten bolt to 9 Nm (6.5 lbf.ft).
  3. Fit underbelly panel. Refer to «REMOVAL & INSTALLATION»(ref-159181-S00917112562004051800000) .
  4. Connect CKP sensor multiplug to engine harness.
  5. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  6. Connect battery earth lead.

Scheme 20

Scheme 20: Remove
Scheme 20: Remove

Scheme 21

Scheme 21
Scheme 21

Scheme 22

Scheme 22
Scheme 22
  1. Disconnect battery earth lead.
  2. Remove acoustic cover.
  3. Disconnect multiplug from TP sensor.
  4. Remove and discard 2 Torx screws and wave washers securing TP sensor to inlet manifold.
  5. Remove TP sensor specification plate.
  6. Pull TP sensor from throttle spindle. CAUTION: Do not twist or apply leverage to throttle position sensor.

Scheme 23

Scheme 23: Refit
Scheme 23: Refit
  1. Clean mating faces of throttle housing and TP sensor.
  2. Fit TP sensor to throttle spindle. Ensure that during fitting the machined flat on the throttle spindle is aligned with the mating portion of the TP sensor CAUTION: The throttle position sensor can be easily damaged during fitting. When pressing the sensor onto the throttle spindle, use fingers only, and only apply pressure to the area shown shaded in the illustration.
  3. Rotate TP sensor in an anti-clockwise direction to align fixing holes. CAUTION: Do not rotate throttle position sensor in a clockwise direction and ensure that it is not rotated beyond its internal stops.
  4. Fit TP sensor specification plate.
  5. Fit new Torx screws and wave washers, tighten Torx screws to 1.5 Nm (1.1 lbf.ft).
  6. Connect multiplug to TP sensor.
  7. Operate throttle cable cam 2 or 3 times and ensure that full travel to the throttle open and the throttle closed positions is available.
  8. Fit acoustic cover.
  9. Connect battery earth lead. NOTE: A 'throttle initialization' procedure MUST be carried out using TestBook/T4 whenever the TP sensor is removed or renewed.

Scheme 24

Scheme 24: Remove
Scheme 24: Remove
  1. Disconnect battery earth lead.
  2. Remove coolant expansion tank cap to release pressure and refit cap. WARNING: Since injury such as scalding could be caused by escaping steam or coolant, do not remove the filler cap from the coolant expansion tank while the system is hot.
  3. Position absorbent cloth under TM sensor to collect spillage.
  4. Disconnect multiplug from TM sensor.
  5. Release and remove sensor. Discard seal.
  1. Clean sensor and mating face.
  2. Using a new seal, fit and secure sensor.
  3. Connect multiplug to sensor.
  4. Remove absorbent cloth.
  5. Check for leaks and fill expansion tank to 'MAX' mark.
  6. Connect battery earth lead.

Scheme 25

Scheme 25: Remove
Scheme 25: Remove

Scheme 26

Scheme 26
Scheme 26
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Release CMP multiplug from bracket and disconnect multiplug.
  4. Remove bolt securing CMP sensor multiplug bracket and release CMP sensor lead from behind bracket.
  5. Remove bolt securing CMP sensor to camshaft cover.
  6. Remove CMP sensor and discard seal.
  1. Clean CMP sensor and mating face.
  2. Lubricate new seal with clean engine oil and fit to CMP sensor.
  3. Position CMP sensor, fit and tighten bolt to 8 Nm (6 lbf.ft).
  4. Feed CMP sensor lead behind multiplug bracket, align bracket, fit bolt and tighten to 8 Nm (6 lbf.ft).
  5. Connect CMP sensor multiplug and secure to bracket.
  6. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  7. Connect battery earth lead.

Scheme 27

Scheme 27: Remove
Scheme 27: Remove
  1. Disconnect battery earth lead.
  2. Remove LH inlet manifold. Refer to «REMOVE»(/land-rover/freelander/l314-2003-2006/remont/exhaust/#manifolds-exhaust-systems-k-series-kv6) .
  3. Disconnect KS multiplug.
  4. Note the routing of each KS harness.
  5. Remove 2 bolts securing KS to cylinder block and remove sensors.
  1. Clean KS and mating faces on cylinder block.
  2. Position KS, ensure that harnesses are correctly routed, fit and tighten bolts to 25 Nm (18 lbf.ft).
  3. Connect KS multiplug.
  4. Fit LH inlet manifold. Refer to «REFIT»(/land-rover/freelander/l314-2003-2006/remont/exhaust/#manifolds-exhaust-systems-k-series-kv6) .
  5. Connect battery earth lead.
  6. If a new KS has been fitted, reset ECM adaptions using T4.

Scheme 28

Scheme 28: Remove
Scheme 28: Remove

Scheme 29

Scheme 29
Scheme 29
  1. Remove 2 nuts securing throttle pedal assembly to bulkhead.
  2. Release clip securing throttle inner cable to throttle pedal and disconnect inner cable from pedal.
  3. Disconnect multiplug from throttle pedal switch.
  4. Remove throttle pedal assembly from vehicle.
  5. Release throttle pedal switch from bracket on throttle pedal assembly.
  6. Release clips securing switch bracket to pedal assembly and remove bracket.

Scheme 30

Scheme 30: Refit
Scheme 30: Refit
  1. Fit switch bracket to throttle pedal assembly and secure with clips
  2. Position switch and push fully into bracket on pedal assembly.
  3. To correctly position throttle pedal switch, move throttle pedal to the closed position and ensure that switch is in contact with tang on throttle pedal.
  4. Connect multiplug to throttle pedal switch.
  5. Connect throttle inner cable to throttle pedal and secure with clip.
  6. Position throttle pedal assembly to bulkhead, fit and tighten nuts to 25 Nm (18 lbf.ft).

Scheme 31

Scheme 31: Remove
Scheme 31: Remove

Scheme 32

Scheme 32
Scheme 32
  1. Disconnect battery earth lead.
  2. Remove engine acoustic cover. «REMOVAL»(ref-158807-S40842740032005011300000)
  3. Disconnect multiplug from MAP/IAT sensor.
  4. Remove 2 screws securing MAP/IAT sensor to inlet manifold chamber, remove sensor.
  1. Clean MAP/IAT sensor and mating face on inlet manifold chamber.
  2. Position MAP/IAT sensor, fit and tighten screws.
  3. Connect multiplug to MAP/IAT sensor.
  4. Fit engine acoustic cover. «INSTALLATION»(ref-158807-S29684217892005011300000)
  5. Connect battery earth lead.
  6. If a new MAP/IAT sensor has been fitted, reset ECM adaptions using T4.

Scheme 33

Scheme 33: Remove
Scheme 33: Remove

Scheme 34

Scheme 34
Scheme 34
  1. Disconnect battery earth lead.
  2. Remove 2 nuts and release throttle pedal from studs.
  3. Release TP sensor multiplug from bracket and disconnect from main harness.
  4. Remove nut and release lever from sensor.
  5. Remove 2 nuts and bolts and remove sensor.
  1. Fit TP sensor and tighten nuts and bolts to 10 Nm (7 lbf.ft).
  2. With throttle pedal held closed, fit lever to sensor and tighten nut to 10 Nm (7 lbf.ft).
  3. Position throttle pedal, connect multiplug and secure to pedal bracket.
  4. Fit pedal to studs and tighten nuts to 25 Nm (18 lbf.ft).
  5. Connect battery earth lead.
  6. Use TestBook/T4 to confirm correct operation.

Scheme 35

Scheme 35: Remove
Scheme 35: Remove
  1. Ensure ignition is switched off.
  2. Remove 2 nuts and release throttle pedal and TP sensor assembly from studs.
  3. Disconnect multiplug from TP sensor.
  4. Remove throttle pedal and TP sensor assembly.
  1. Position throttle pedal and TP sensor assembly and connect multiplug.
  2. Fit throttle pedal and TP sensor assembly to studs and tighten nuts to 25 Nm (18 lbf.ft).