Discovery 2. Manual — part 88

ENGINE MANAGEMENT SYSTEM - V8

REPAIRS 18-2-81

Engine control module (ECM)

$% 18.30.01

Remove

1. Release fixings and remove battery cover.
2. Disconnect battery earth lead.

3. Remove fixings securing fascia RH closing

panel, release diagnostic socket RH drive
models, and remove panel.

4. Remove 2 fixings and remove 'A' post lower

trim.

5. Remove 2 nuts and release ECM from studs

and location on 'A' post lower panel.

6. Lower ECM into footwell and disconnect 5

multiplugs.

7. Remove ECM.

Refit

1. Position new ECM and connect multiplugs.
2. Fit ECM and secure with nuts.
3. Fit lower trim panel to 'A' post and secure with

fixings.

4. Fit diagnostic socket to closing panel, fit closing

panel and secure with fixings.

5. Connect battery earth lead.
6. Fit battery cover and secure with fixings.
7. Programme ECM and reset adaptions using

TestBook.

ENGINE MANAGEMENT SYSTEM - V8

18-2-82 REPAIRS

Sensor - engine coolant temperature
(ECT)

$% 18.30.10

Remove

1. Release turnbuckles and remove battery cover.
2. Disconnect battery earth lead.
3. Remove auxiliary drive belt.

+

CHARGING AND STARTING,

REPAIRS, Belt - auxiliary drive.

4. Remove 2 bolts securing alternator, release

alternator from support bracket and position
aside.

5. Disconnect multiplug from ECT sensor.
6. Remove sensor from inlet manifold and discard

sealing washer.

Refit

1. Clean sealant from threads in manifold.
2. Apply sealant, Part No. STC 50552 to sensor

threads.

3. Fit new sealing washer to ECT sensor and

tighten sensor to 10 Nm (7 lbf.ft).

4. Connect multiplug to ECT sensor.
5. Position alternator, fit bolts and tighten to 45

Nm (33 lbf.ft).

6. Fit auxiliary drive belt.

+

CHARGING AND STARTING,

REPAIRS, Belt - auxiliary drive.

7. Top up cooling system.
8. Connect battery earth lead.
9. Fit battery cover and secure with fixings.

ENGINE MANAGEMENT SYSTEM - V8

REPAIRS 18-2-83

Sensor - crankshaft position (CKP)

$% 18.30.12

Remove

1. Release fixings and remove battery cover.
2. Disconnect battery earth lead.
3. Raise front of vehicle.

WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.

4. Release fixings and remove underbelly panel.

5. Release CKP sensor multiplug from bracket.
6. Remove 2 bolts securing CKP sensor heat

shield and position aside.

7. Remove 2 nuts securing CKP sensor, remove

2 spacers, CKP sensor and sensor mounting.

8. Disconnect CKP sensor multiplug from engine

harness.

Refit

1. Ensure all components are clean.
2. Connect CKP sensor multiplug to engine

harness.

3. Fit sensor mounting, CKP sensor, 2 spacers

and tighten CKP sensor retaining nuts to 6 Nm
(5 lbf.ft).

4. Fit CKP sensor heat shield and secure with

bolts.

5. Fit underbelly panel and secure with fixings.
6. Remove stand(s) and lower vehicle.
7. Connect battery earth lead.
8. Fit battery cover and secure the fixings.
9. Reset adaptions using TestBook.

ENGINE MANAGEMENT SYSTEM - V8

18-2-84 REPAIRS

Sensor - radiator temperature

$% 18.30.20

Remove

1. Disconnect battery earth lead.
2. Position container to collect coolant spillage.

3. Disconnect multiplug from sensor.
4. Remove sensor and discard sealing washer.

Refit

1. Fit new sealing washer to sensor.
2. Fit and tighten sensor.
3. Connect multiplug to sensor.
4. Refill cooling system.
5. Connect battery earth lead.

Sensor - camshaft position (CMP)

$% 18.30.24

Remove

1. Release fixings and remove battery cover.
2. Disconnect battery earth lead.
3. Raise front of vehicle.

WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.

4. Release fixings and remove underbelly panel.
5. Remove engine oil filter.

+

ENGINE - V8, REPAIRS, Filter - oil.

6. Disconnect engine harness from CMP sensor

and release CMP sensor multiplug from
bracket.

7. Remove bolt from clamp securing CMP sensor

to timing gear cover.

8. Remove clamp and CMP sensor. Discard 'O'

ring from CMP sensor.

Refit

1. Ensure CMP sensor is clean, fit new 'O' ring

and sensor to cover.

2. Fit clamp to CMP sensor and tighten bolt to 8

Nm (6 lbf.ft).

3. Fit sensor multiplug to bracket and connect

engine harness to multiplug.

4. Fit engine oil filter.

+

ENGINE - V8, REPAIRS, Filter - oil.

5. Fit underbelly panel and secure with fixings.
6. Lower vehicle and connect battery earth lead.
7. Fit battery cover and secure with fixings.