Workshop Manuals Factory service & repair Land Rover
01 02 AMENDMENT INSTRUCTION SHEET03 INTRODUCTION04 GENERAL SPECIFICATION DATA05 ENGINE TUNING DATA06 GENERAL FITTING REMINDERS07 MAINTENANCE08 ENGINE09 FUEL SYSTEM10 COOLING SYSTEM11 MANIFOLD AND EXHAUST SYSTEM12 CLUTCH13 MANUAL GEARBOX14 TRANSFER GEARBOX15 PROPELLER SHAFTS16 REAR AXLE AND FINAL DRIVE17 FRONT AXLE AND FINAL DRIVE18 STEERING19 FRONT SUSPENSION20 REAR SUSPENSION21 BRAKES22 WHEELS AND TYRES23 CHASSIS AND BODY24 HEATING AND VENTILATION25 AIR CONDITIONING26 WIPERS AND WASHERS27 ELECTRICAL28 INSTRUMENTS
Land Rover 300Tdi Defender27 · ELECTRICAL
27 · Electrical

ELECTRONIC CONTROL UNIT (ECU)

Make
Land Rover
Model
Defender 300Tdi Defender
Section
ELECTRONIC CONTROL UNIT (ECU)
ELECTRICALELECTRONIC CONTROL UNIT (ECU)
background image

ELECTRICAL

3

REPAIR

ELECTRONIC CONTROL UNIT (ECU)

Service repair no - 86.55.85

Remove

1. Remove LH front seat cushion.
2. Release retaining clip and remove battery

access cover.

3. Slacken battery negative lead clamp bolt.
4. Turn starter switch ’on’.
5. Turn starter switch ’off’ and remove key.
6. Disconnect battery negative lead.

NOTE: Operation 6 needs to be carried out
within 15 seconds to avoid activating
battery backed-up alarm sounder, if fitted.

7. Remove steering wheel

See STEERING,

Repair, Steering wheel.

8. Remove 4 screws securing instrument panel to

fascia cowl

See INSTRUMENTS, Repair,

Instrument panel.

9. Pull instrument panel away from fascia cowl and

disconnect speedometer cable, multi-plugs,
alarm LED plug lead, heated rear screen lead,
gearbox oil temperature lead and immobiliser
warning light leads.

10. Remove instrument panel.
11. Remove 2 screws securing ECU to fascia cowl

(LH drive shown). On RH drive vehicles ECU is
positioned lower down, on vertical face of fascia
panel.

12. Release ECU from fascia cowl and disconnect

both multi-plugs.

13. Remove ECU.

NOTE: A new ECU must be initialised
using TestBook.

Refit

14. Position ECU at fascia cowl and reconnect both

multi-plugs.

15. Locate ECU on mounting face of fascia cowl and

secure with 2 screws.

16. Position instrument panel to fascia cowl and

reconnect immobiliser warning light leads,
gearbox oil temperature lead, heated rear screen
lead, alarm LED plug lead, multi-plugs and
speedometer cable.

17. Secure instrument panel to fascia cowl with 4

screws

See INSTRUMENTS, Repair,

Instrument panel.

18. Fit steering wheel

See STEERING, Repair,

Steering wheel.

19. Reconnect battery negative lead.
20. Fit battery access cover.
21. Fit LH seat cushion.

Parts & tools for this job For Land Rover Defender

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