Page 2492 of 2893

´
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Speaker Terminal Wire color
YES
NO YES
NO
23-208Audio System
Symptom Troubleshooting (cont’d)
NAVIGATION UNIT CONNECTOR A (24P)
STEREO AMPLIFIER CONNECTOR A (20P)
BAUDIO
AMP
(LT GRN)
13. Check for continuity between body ground and the
following terminals of navigation unit connector A
(24P).
Driver’s door speaker,
Left tweeter A23 ( ) LT GRN
A22 ( ) PNK
Front passenger’s
door speaker,
Right tweeter A19 ( ) GRY
A18 ( ) BRN
Left rear speaker A11 ( ) YEL A10 ( ) BRN
Right rear speaker A7 ( ) BLU A6 ( ) ORN
Repair short to body ground in the wire(s)
between the navigation unit and the speaker(s).
Substitute a known-good navigation unit
(see page 23-355), and recheck. If the symptom/
indication goes away, replace the original
navigation unit. 14. Measure the voltage between stereo amplifier
connector A (20P) terminal No. 10 and body ground.
Go to step 15.
Repair open in the wire between the No. 17
(15 A) fuse in the under-hood fuse/relay box and
stereo amplifier connector A (20P) terminal
No. 10.
Wire side of female terminals Wire side of female terminals
Is there continuity?
Is there battery voltage?
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Page 2493 of 2893

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YES
NO
YES
NO YES
NO
23-209
STEREO AMPLIFIER CONNECTOR A (20P)
ACC RADIO (PUR)
STEREO AMPLIFIER CONNECTOR B (14P) AMP ON (LT BLU) STEREO AMPLIFIER CONNECTOR A (20P)
GND (BLK)
15. Turn the ignition switch to ON (II).
16. Measure the voltage between stereo amplifierconnector A (20P) terminal No. 9 and body ground.
Go to step 17.
Repair open in the wire between the No. 35
(7.5 A) fuse in the under-dash fuse/relay box and
stereo amplifier connector A (20P) terminal No. 9.
17. Measure the voltage between stereo amplifier connector B (14P) terminal No. 7 and body ground.
Go to step 18.
Repair open in the wire between the stereo
amplifier connector B (14P) terminal No. 7 and
navigation unit connector A (24P) terminal
No. 17. 18. Measure the voltage between stereo amplifier
connector A (20P) terminal No. 20 and body ground.
Go to step 19.
Repair open in the wire between stereo
amplifier connector A (20P) terminal No. 20 and
body ground (G 601).
19. Turn the ignition switch to LOCK (0).
(cont’d)
Wire side of female terminalsWire side of female terminals Wire side of female terminals
Is there battery voltage?
Is there battery voltage? I s t her e l ess t han 0.1 V on bot h t er mi nal s?
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Page 2495 of 2893

Î
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µ
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Stereo amplifier connector Wire color
YES
NO Navigation
unit connector Stereo
amplifier
connector Wire color
YES
NO
23-211
STEREO AMPLIFIER CONNECTOR B (14P) STEREO AMPLIFIER CONNECTOR B (14P)NAVIGATION UNIT CONNECTOR A (24P)
24. Disconnect navigation unit connector A (24P).
25. Check for continuity between stereo amplifier
connector B (14P) and body ground according to
the table. Then check for continuity between the
same terminals listed in the table and stereo
amplifier connector B (14P) terminal No. 2 (the
harness shield).
B1 BLU
B8 RED
Short in the wire between the stereo
amplifier and the navigation unit. Replace the
affected shielded harness.
Go to step 26. 26. Check for continuity between navigation unit
connector A (24P) and stereo amplifier connector B
(14P) according to the table.
A22 B8 RED
A23 B1 BLU
Go to step 27.
Open in the wire between the navigation unit
and the stereo amplifier. Replace the affected
shielded harness.
(cont’d)
Wire side of female terminals Wire side of female terminalsWire side of female terminals
Is there continuity?
Is there continuity?
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Page 2496 of 2893

Î
Î
µ
µ µ
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Stereo amplifier connector Wire color
YES
NO Navigation
unit connector Stereo
amplifier
connector Wire color
YES
NO
23-212 Audio System
Symptom Troubleshooting (cont’d)
STEREO AMPLIFIER CONNECTOR B (14P)
STEREO AMPLIFIER CONNECTOR B (14P)NAVIGATION UNIT CONNECTOR A (24P)
27. Check for continuity between stereo amplifier
connector B (14P) and body ground according to
the table. Then check for continuity between the
same terminals listed in the table and stereo
amplifier connector B (14P) terminal No. 5 (the
harness shield).
B4 BLU
B11 PNK
Short in the wire between the stereo
amplifier and the navigation unit. Replace the
affected shielded harness.
Go to step 28. 28. Check for continuity between navigation unit
connector A (24P) and stereo amplifier connector B
(14P) according to the table.
A16 B11 PNK
A19 B4 BLU
Go to step 29.
Open in the wire between the navigation unit
and the stereo amplifier. Replace the affected
shielded harness.
Wire side of female terminals
Wire side of female terminalsWire side of female terminals
Is there continuity?
Is there continuity?
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Page 2497 of 2893

Î
Î
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µ µ
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Stereo amplifier connector Wire color
YES
NO Navigation
unit connector Stereo
amplifier
connector Wire color
YES
NO
23-213
STEREO AMPLIFIER CONNECTOR B (14P) STEREO AMPLIFIER CONNECTOR B (14P)NAVIGATION UNIT CONNECTOR A (24P)
29. Check for continuity between stereo amplifier
connector B (14P) and body ground according to
the table. Then check for continuity between the
same terminals listed in the table and stereo
amplifier connector B (14P) terminal No. 9 (the
harness shield).
B3 BLK
B10 WHT
Short in the wire between the stereo
amplifier and the navigation unit. Replace the
affected shielded harness.
Go to step 30. 30. Check for continuity between navigation unit
connector A (24P) and stereo amplifier connector B
(14P) according to the table.
A10 B10 WHT
A11 B3 BLK
Go to step 31.
Open in the wire between the navigation unit
and the stereo amplifier. Replace the affected
shielded harness.
(cont’d)
Wire side of female terminals Wire side of female terminalsWire side of female terminals
Is there continuity?
Is there continuity?
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Page 2498 of 2893

Î
Î
µ
µ µ
µ
Stereo amplifier connector Wire color
YES
NO Navigation
unit connector Stereo
amplifier
connector Wire color
YES
NO
23-214 Audio System
Symptom Troubleshooting (cont’d)
STEREO AMPLIFIER CONNECTOR B (14P)
STEREO AMPLIFIER CONNECTOR B (14P)NAVIGATION UNIT CONNECTOR A (24P)
31. Check for continuity between stereo amplifier
connector B (14P) and body ground according to
the table. Then check for continuity between the
same terminals listed in the table and stereo
amplifier connector B (14P) terminal No. 12 (the
harness shield).
B6 LT GRN
B13 PUR
Short in the wire between the stereo
amplifier and the navigation unit. Replace the
affected shielded harness.
Go to step 32. 32. Check for continuity between navigation unit
connector A (24P) and stereo amplifier connector B
(14P) according to the table.
A6 B13 PUR
A7 B6 LT GRN
Substitute a known-good navigation unit
(see page 23-355), and recheck. If the symptom/
indication goes away, replace the original
navigation unit. If the symptom is still present,
substitute a known-good stereo amplifier, and
recheck. If the symptom/indication goes away,
replace the original stereo amplifier (see page
23-259).
Open in the wire between the navigation unit
and the stereo amplifier. Replace the affected
shielded harness.
Wire side of female terminals
Wire side of female terminalsWire side of female terminals
Is there continuity?
Is there continuity?
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Page 2499 of 2893

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No sound is heard from the speaker(s)
(display is normal) (without navigation)
YES
NO
YES
NO YES
NO
YES
NO
23-215
NOTE:
Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
Set the fader and balance positions to the center.
Before performing symptom troubleshooting, do the power switch will not turn on troubleshooting
(see page 23-203).
For vehicles with factory installed audio, do the self- diagnostic function, speaker check (see page 23- 192)
to help isolate the speaker.
1. Turn the ignition switch to ON (II).
2. Check that the volume button is not set to the MIN level.
Raise the volume level, and recheck the
function.
Go to step 3.
3. Do the speaker check mode in the self-diagnostic function (see page 23-192).
Speaker(s) failed the test:
If at least one speaker is OK, go to step 4.
If all speakers fail to sound, go to step 7.
Speakers all work, but sound quality is poor:
If the sound is poor only with AM or FM, go to poor AM or FM radio reception or interference
(see page 23-199).
If the sound is poor only with disc. – Try several known- good disc in the audio unit.
– If the sound quality is normal, the original disc is faulty.
– If the sound quality is still poor, replace the audio unit.
If the sound is poor in all modes, go to sound quality diagnosis (see page 23-251).
4. Turn the ignition switch to LOCK (0). 5. Remove the speaker(s) with no sound (see page
23-259), and disconnect its connector.
6. Check the speaker 2P connector for a loose or poor connection.
Go to step 7.
Operation is normal.
7. Make sure the ignition switch is in LOCK (0).
8. Remove the speaker(s) with no sound (see page 23-259), and disconnect its connector.
9. Measure the resistance between terminals No. 1 and No. 2 of the speaker connector.
Go to step 10.
Faulty speaker(s).
10. Remove the audio unit (see page 23-256). Disconnect audio unit connector A (17P).
NOTE: Eject all the discs before removing the audio
unit to prevent damaging the CD player’s load
mechanism.
(cont’d)
Is i t at M IN l ev el ?Do any or al l of t he speak er s f ai l t o sound ? Reconnect t he speak er 2P connect or and r echeck
the symptom; does it still f ail?
Is t her e about 4 ?
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Page 2501 of 2893

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Auxiliary input sound is low or cannot be
heard
YES
NO
YES
NO
YES
NO YES
NO
Navigation unit connector Wire color
YES
NO
23-217
NAVIGATION UNIT CONNECTOR B (24P)
NOTE: Check the vehicle battery condition first.
Check the connectors for poor connections or loose terminals.
Use auxiliary stereo cables with 3.5 mm ends only.
Auxiliary accessories may be played on the audio unit using the auxiliary input.
1. Turn the ignition switch to ON (II).
2. Turn on the audio unit or navigation unit and connect an aux iliary accessory to the auxiliary
input jack.
3. Check the volume operation.
Operation is normal at this time.
Go to step 4.
4. Make sure the auxiliary accessory volume to max.
Go to step 5.
Raise the auxiliary accessory volume is set to
high. Make sure the audio unit volume is turned
down before retesting.
5. Substitute a known-good aux iliary audio accessory
and/or auxiliary stereo cable, and recheck.
Original auxiliary audio accessory or
auxiliary stereo cable is faulty.
Go to step 6.
6. Turn the ignition switch to LOCK (0). 7. Remove the auxiliary jack assembly (see page
23-261), and check that the auxiliary jack assembly
is properly connected.
With navigation: go to step 8.
Without navigation: go to step 13. Reconnect the connector, and recheck the
function.
8. Disconnect aux iliary jack assembly 5P connector.
9. Disconnect navigation unit connector B (24P).
10. Check for continuity between body ground and navigation unit connector B (24P) according to the
table.
B1 BRN
B3 BLU
B13 YEL
B14 GRN
B15 WHT
Short to body ground in the wire(s) between
the navigation unit and the auxiliary jack assembly.
Replace the affected shielded harness.
Go to step 11.
(cont’d)
Wire side of female terminals
I s t he sound nor mal ?Isthevolumeset tohigh?
Does the auxiliary audio accessory operatepr oper l y ? Is the auxiliary jack assembly c
onnect ed
pr oper l y ?
Is there continuity?
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