Range Rover 2. Electrical Manual - part 201

KEY INFORMATION

i

Component is disconnected.

Backprobe harness connector

Component is connected.

Backprobe harness connector

Component is disconnected.

Probe component

Component is disconnected.

Probe harness connector

Probe inĆline connector

TERMINAL

NUMBER

DESIGNATION

50

Battery voltage: Ignition Switch

in position III

30

Battery voltage: supplied constantly

15

Battery voltage: Ignition Switch

in position II or III

R

Battery voltage: Ignition Switch

in positions I, II

31

Ground

CIRCUIT DIAGRAMS

Circuit diagrams are arranged so that

current flow is from the top of the diagram

(current source) to the bottom of the

diagram (ground).

D

D Only those components that work together

in the circuit are shown. If only part of a

component is used in the circuit, then only

that part of the component is shown.

D Remember:

Entire component

Part of a component

D

DIAGNOSIS

If the diagram is accompanied by text:

- Read the Circuit Operation before

proceeding with the electrical diagnosis.

- Read the Troubleshooting Hints before

performing the System Diagnosis.

- Tests follow the System Diagnosis

- When performing the System Diagnosis,

be certain that all components

disconnected in previous steps are

reconnected unless otherwise directed.

See Introduction (i) for additional

circuit diagram symbols.

CIGAR LIGHTER/CLOCK/ACCESSORY SOCKET

J2

1

CIRCUIT DIAGRAM

REV: 11/99

30

F 8

30 A

RL7

5

C1290

Z238
Body Electrical
Control Module
(BECM)

30

F 1

10 A

7

C1276

See Fuse Details

E0562

S205

P

G

E0562

S207

See Ground
Distribution

See Ground
Distribution

B

B

1

C0232

RW

1

C0095

Z117
Clock

Interior Lamps

2

C0232

2

C1594

1

C1595

B106
Fascia Cigar
Lighter

1

C1594

RU

Interior Lamps

5

2

C0350

1

C0350

P4
Accessory
Socket

E0565

S301

See Ground
Distribution

B

S208

C1584

G

(MY 2000)

KEY INFORMATION

i

Component is disconnected.

Backprobe harness connector

Component is connected.

Backprobe harness connector

Component is disconnected.

Probe component

Component is disconnected.

Probe harness connector

Probe inĆline connector

TERMINAL

NUMBER

DESIGNATION

50

Battery voltage: Ignition Switch

in position III

30

Battery voltage: supplied constantly

15

Battery voltage: Ignition Switch

in position II or III

R

Battery voltage: Ignition Switch

in positions I, II

31

Ground

CIRCUIT DIAGRAMS

Circuit diagrams are arranged so that

current flow is from the top of the diagram

(current source) to the bottom of the

diagram (ground).

D

D Only those components that work together

in the circuit are shown. If only part of a

component is used in the circuit, then only

that part of the component is shown.

D Remember:

Entire component

Part of a component

D

DIAGNOSIS

If the diagram is accompanied by text:

- Read the Circuit Operation before

proceeding with the electrical diagnosis.

- Read the Troubleshooting Hints before

performing the System Diagnosis.

- Tests follow the System Diagnosis

- When performing the System Diagnosis,

be certain that all components

disconnected in previous steps are

reconnected unless otherwise directed.

See Introduction (i) for additional

circuit diagram symbols.

HEATING AND VENTILATION (WITHOUT A/C)

K3

CIRCUIT OPERATION

1

CIRCUIT OPERATION

Ignition position 1 (Accessories)

This feed is obtained from the BeCM via fuse 8 and
is shared with the Radio, Front cigar lighter and car
phone (if fitted). The Ignition 1 is essential to the
control panel as it provides power to the ECU
although no functions or display on the LCD are
possible.

Ignition position 2

This feed is obtained from the BeCM via fuse 35.

Ground Connection

This feed runs down to a spliced joint, joining the
main earth run down to fascia earth point E0652.

Dimmer Line

This Pulse Width Modulated signal is provided by the
BeCM.

LCD Dimmer line

This line is a input to the HEVAC and the signal is a
inverse Pulse Width Modulated signal which is
determined by the instrument pack.

Alternator Charge signal

This signal is given to the HEVAC ECU to inform it
that the engine is running. This signal is active low.

Diagnostic K line

This line is used to communicate with the diagnostic
equipment (TESTBOOK) and is normally held at 12V
when not active.

Left/Right Recirculation motors

These motors control the flaps on the blower motor
modules. The flaps should be in one of two
positions, either fully open or fully closed.

Left/Right Blower modules

The blowers have a permanent 12V feed to them.
The speed of the motors is determined by the control
lines which go to the motors. The motors also
provide a voltage feedback to the HEVAC ECU to
determine the actual voltage at the motors but also
to show if there are any faults.

Left/Right Blend and Distribution Motors

These motors are controlled by the HEVAC ECU
which provides power to the motors, which in turn
report back their actual positions to the HEVAC
ECU.