1986 TOYOTA LAND CRUISER audio

1 Radio RADIO NOT OPERATING WHEN POWER SWITCH TURNED TO ºONº
+ B wire harness faulty.
GND faulty.
ACC wire harness faulty.
+B wire harness faulty.
GND faulty. Is tape player operating normally?
Check if CIG fuse is OK?
Is power supplied to ACC terminal of power amplifier?Ye s
NG
No OK No
No
No
No OK
OK
OK Ye s
Ye s
Ye s
Ye sNG
NG
NG Check if RADIO fuse is OK?
Radio assembly faulty.Replace fuse.
ACC wire harness faulty.
Check if GND (wire harness side) to radio assembly is OK?Radio assembly faulty.
Replace fuse.
Is power supplied to +B terminal of power amplifier?
Is power supplied to ACC terminal of radio assembly?
Is power supplied to +B terminal of radio assembly? Check if GND (wire harness side) of power amplifier
grounded normally?
- BODY ELECTRICALAUDIO SYSTEM
BE-151
2524 Author
: Date
:
2004 LAND CRUISER (RM1071U)
The term ºAMº includes LW,MW and SW, and the term ºFWº includes UKW.

2 RadioDISPLAY INDICATES WHEN POWER SWITCH TURNED TO
ºONº, BUT NO SOUND (INCLUDING ºNOISEº) IS PRODUCED
+ B wire harness faulty.
GND faulty.
Speaker wire harness faulty. Is tape player operating normally?
Check if ACC fuse is OK?Ye s
NG
No OK No
No OK
OK Ye s
Ye sNG
NG Check if AMP fuse is OK?
Radio assembly faulty. Recheck system after repair.Replace fuse.
ACC wire harness faulty. Radio assembly faulty.
Replace fuse.
Does continuity exist in speaker wire harness?
Temporarily install another speaker. Functions OK?
Hiss noise from speaker?Ye s
Ye s NoNo
No Ye s
Power amplifier faulty.
Recheck system after repair. Speaker faulty.
Is power supplied to ACC terminal of power amplifier?
Check if GND (wire harness side) of power amplifier
grounded normally? Is power supplied to +B terminal of power amplifier? BE-152
- BODY ELECTRICALAUDIO SYSTEM
2525 Author
: Date
:
2004 LAND CRUISER (RM1071U)

Speaker wire harness faulty. Radio assembly faulty.
Recheck system after repair.
Temporarily install another speaker? Functions OK?
Power amplifier faulty. Recheck system after repair.Speaker faulty. 4 Radio ANY SPEAKER DOSE NOT WORK
Is hiss noise produced by non-functioning speaker?
Does continuity exist in speaker wire harness?Ye s
Ye s No
Ye s
NoNo 3 Radio NOISE PRESENT, BUT AM-FM NOT OPERATING
Go to No.25
Radio faulty. If radio side faulty.
- BODY ELECTRICALAUDIO SYSTEM
BE-153
2526 Author
: Date
:
2004 LAND CRUISER (RM1071U)

5 RadioANY AM OR FM DOES NOR WORK
FEW PRESET TUNING BANDS
Problem with radio wave signals or location?
Are both AM and FM defective?Radio assembly faulty.
Go to No.6Is power for the antenna being output from the radio assembly?Poor signals, poor location.
No
Ye s NoYe s
Ye s
No BE-154
- BODY ELECTRICALAUDIO SYSTEM
2527 Author
: Date
:
2004 LAND CRUISER (RM1071U)

6RadioPOOR RECEPTION
Is the condition bad in comparison with other vehicles?
Are there any additional installation parts?
(Sun shade film, telephone antenna, etc.)
Check if there is any scratch and breaking of a wire on
the glass antenna and the defogger pattern.
(visual check. tester)
(See page BE-124
)
Is the contact of the plug jack of the radio OK?
Does the condition get better by using the outer
antenna (such as pillar antenna)?
Is the contact of the antenna terminal on the glass
surface and the defogger terminal?
Is the continuity of the antenna cord OK?
Check the grounding of the antenna, antenna cord.
Does the condition get better by replacing the
antenna cord?Take a measure for contact. An electric wave environment is bad.
Does the condition get better if
removing them?
Influence of additional installation parts.
Repair. (See page BE-75)
Check the radio.
Take a measure for contact.
Grounding failure. Replace the antenna cord.
Replace the antenna cord. Ye s
No
Radio assembly faultyYe s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s No
No
NoNo
No
No
No
NG
OK
Ye s
- BODY ELECTRICALAUDIO SYSTEM
BE-155
2528 Author
: Date
:
2004 LAND CRUISER (RM1071U)

7 Radio SOUND QUALITY POOR
Ye sNo
Ye s
NG
OK Is sound quality always bad?
Radio assembly faulty.Poor signals, poor location.
Install properly.
Speaker faulty. Is tape player operating normally?
Is speaker properly installed?
Radio assembly or power amplifier faulty.
Recheck system after repair. Temporarily install another speaker. Functions OK?Is sound quality bad in certain
areas only?
Can cassette tape be inserted in tape player?
Check if AMP fuse is OK?Radio assembly faulty.
Replace fuse.
+B wire harness faulty.
GND faulty.
Power amplifier faulty. 8 Radio PRESET MEMORY DISAPPEARSNo
Radio assembly faulty.
No
NoNo Ye s
Ye s
Power amplifier faulty.
Radio assembly faulty.Ye s
Ye sYe s
No
No
No NG
NG
OKOKYe s
Check if GND (wire harness side) of power amplifier
grounded normally? Is power supplied to +B terminal of power amplifier?
Check if GND (wire harness side) of radio assembly
grounded normally? Is power supplied to +B terminal of radio assembly?
Check if RADIO fuse is OK? Replace fuse.
NG
OK BE-156
- BODY ELECTRICALAUDIO SYSTEM
2529 Author
: Date
:
2004 LAND CRUISER (RM1071U)

9 Tape Player CASSETTE TAPE CANNOT BE INSERTED
Ye s
NG Is there a foreign object inside tape player?
Is auto search button radio operating normally?
Check if RADIO fuse is OK?
Radio assembly faulty.Radio assembly faulty. Remove foreign object.
Replace fuse.
+B wire harness. Ye s No
No
OK
Ye s
OKNo
NG
10 Tape Player CASSETTE TAPE INSERTED, BUT NO POWER
Is radio operating normal?
Check if ACC fuse is OK?
Check if RADIO fuse is OK?Radio assembly faulty.
Replace fuse.
Replace fuse.
+B wire harness faulty.
ACC wire harness.
Radio assembly faulty.No
No
No OK
OK
Ye s
Ye sYe s
NG
NG Check if GND (wire harness side) of radio assembly
grounded normally? Is power supplied to +B terminal of radio assembly?
Is power supplied to +B terminal of radio assembly?
Is power supplied to ACC terminal of radio assembly?GND faulty.
- BODY ELECTRICALAUDIO SYSTEM
BE-157
2530 Author
: Date
:
2004 LAND CRUISER (RM1071U)

11 Tape Player POWER COMING IN, BUT TAPE PLAYER NOT OPERATING
Ye s
NoRadio assembly faulty. Cassette tape faulty.
Speaker wire harness faulty.
Speaker faulty.
Power amplifier faulty.
Recheck system after repair. Ye s No
No
Ye s
Ye sNo No Function OK if different cassette tape inserted?
Is radio operating normally?
Does continuity exist in speaker wire harness?
Temporarily install another speaker.
Function OK?
Hiss noise from speaker?
Radio assembly faulty.
Recheck system after repair.Ye s
Radio assembly faulty.
Recheck system after repair. Radio assembly faulty.
No
No
No Ye sYe s
Ye s
Ye s No Is radio operating normally?
Speaker wire harness faulty.
Speaker faulty. Is hiss noise produced by non-functioning speaker.
Does continuity exist in speaker wire harness?
Temporarily install another speaker.
Function OK?
Radio assembly or power amplifier faulty.12 Tape Player ANY SPEAKER DOES NOT WORK BE-158
- BODY ELECTRICALAUDIO SYSTEM
2531 Author
: Date
:
2004 LAND CRUISER (RM1071U)