Range Rover 2. Electrical Manual — part 38

RADIO

E6

20

TROUBLESHOOTING

Speaker

Z176
Subwoofer Am-
plifier

BAT VOLT

Test D

OK

OK

PROBLEM CAUSE

OK

OK

1D

1E

CONDITIONS

Connect for less than 1 second

RESULTS

Speaker ’pops’

CONDITIONS

Ignition Switch

Position: I

RESULTS

Speaker

-

D

D

Test E

PROBLEM CAUSE

Speaker Wiring

-

Low Line Radio and Mid
Line Radio:

PROBLEM CAUSE

R, P Wire

-

- Fuse F15

Connect at suspect connector

D

C377

2E

R

1

1

Radio

-

- Body Electrical Con-

trol Module (BECM)

Amplifier

-

High Line Radio:

RADIO

E6

21

TROUBLESHOOTING

Z176
Subwoofer Am-
plifier

Z176
Subwoofer Am-
plifier

Radio

Less than 1 ohm

OK

OK

PROBLEM CAUSE

OK

OK

4E

2E

3E

CONDITIONS

Ignition Switch

Position: II

RESULTS

BAT VOLT

B, SB

CONDITIONS

Ignition Switch

Position: 0

RESULTS

Wire

-

D

D

3E

1E

PROBLEM CAUSE

B Wire

-

On

D

V

B

C377

B

C377

RADIO

E6

22

TROUBLESHOOTING

C224B

Z111
Radio

Z176
Subwoofer Amplifier

Z176
Subwoofer Amplifier

More than 10K ohms

B, OB Wire

-

Radio

0

OK

OK

PROBLEM CAUSE

OK

OK

6E

4E

5E

CONDITIONS

Ignition Switch

Position: 0

RESULTS

BW, O

CONDITIONS

Ignition Switch

Position: 0

RESULTS

Wire

-

D

D

5E

3E

PROBLEM CAUSE

BW, O Wire

-

Disconnected

D

B

BW

C377

B

BW

C377

C224B

RADIO

E6

23

TROUBLESHOOTING

0

Z176
Subwoofer Amplifier

Z111
Radio

Operate

OK

OK

PROBLEM CAUSE

OK

OK

6E

7E

CONDITIONS

Ignition Switch

Position: 0

RESULTS

B, OB

CONDITIONS

Ignition Switch

Position: II

RESULTS

Wire

-

D

D

7E

D

Install a known good Subwoofer

5E

PROBLEM CAUSE

Radio

-

- Subwoofer Amplifier

PROBLEM CAUSE

Subwoofer

-

D

Radio

On

D

Subwoofer Speakers

B

C377

OB

C224B