Page 219 of 4284

TEST ACTION APPLICABILITY
2 Turn the ignition off.
NOTE: Perform this procedure after disconnecting each front speaker
connector.
Disconnect each front speaker harness connector one at a time.
Turn the ignition on.
Turn the radio on.
With the DRBIIIt, erase the audio DTCs.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay ALL OUTPUTS SHORTED with all the front speakers
disconnected?All
Ye s®Go To 3
No®Replace the Speaker that when disconnected the DTC did not
reset. Note: On the premium system, check the I/P speaker
circuits between the front door speaker and the I/P speaker for a
short to ground or shorted together condition before replacing
speaker.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
NOTE: Perform this procedure after disconnecting each rear speaker
connector.
Disconnect each rear speaker harness connector one at a time.
Turn the ignition on.
Turn the radio on.
With the DRBIIIt, erase the audio DTCs.
Cycle the ignition switch from off to on and wait 10 seconds.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay ALL OUTPUTS SHORTED with all the rear speakers
disconnected?All
Ye s®Go To 4
No®Replace Speaker that when disconnected the DTC did not reset.
Note: On the premium system, check the rear speaker ckts
between the rear door speaker and the rear pillar speaker for a
short to ground or shorted together condition before replacing
speaker.
Perform BODY VERIFICATION TEST - VER 1.
4 Turn the ignition off.
Disconnect each front and rear speaker harness connector.
Disconnect the Radio C1 and C2 harness connectors.
Measure the resistance between ground and each speaker (+) circuit.
Is the resistance below 1000.0 (1K) ohms?All
Ye s®Repair the speaker (+) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 5
190
AUDIO
ALL OUTPUTS SHORTED ÐContinued
Page 220 of 4284
TEST ACTION APPLICABILITY
5 Turn the ignition off.
Disconnect each front and rear speaker harness connector.
Disconnect the Radio C1 and C2 harness connectors.
Measure the resistance between ground and each speaker (-) circuit.
Is the resistance below 1000.0 (1K) ohms?All
Ye s®Repair the speaker (-) circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off.
Disconnect each front and rear speaker harness connector.
Disconnect the Radio C1 and C2 harness connectors.
Measure the resistance between each speaker (+) circuit and each speaker (-) circuit.
Is the resistance below 1000.0 (1K) ohms for any of the measurements?All
Ye s®Repair the speaker circuits shorted together.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 7
7 If there are no possible causes remaining, view repair. All
Repair
Replace the Radio.
Perform BODY VERIFICATION TEST - VER 1.
191
AUDIO
ALL OUTPUTS SHORTED ÐContinued
Page 221 of 4284

Symptom List:
AM SECTION
CASS ERROR
CASSETTE COMMUNICATION FAULT
CASSETTE EJECT FAILURE
CASSETTE LOADING FAILURE
CASSETTE TAPE TENSION HIGH
CASSETTE TAPE TENSION LOW
CD ERROR
CD MECHANICAL FAILURE
FM SECTION
MICRO OUTPUT FAILURE
RADIO ERROR
*AM/FM SWITCH INOPERATIVE
*ANY STATION PRESET SWITCH INOPERATIVE
*BALANCE INOPERATIVE
*CD EJECT SWITCH INOPERATIVE
*EQUALIZER INOPERATIVE
*FADER INOPERATIVE
*FF/RW SWITCH INOPERATIVE
*HOUR/MINUTE SWITCHES INOPERATIVE
*PAUSE/PLAY SWITCH INOPERATIVE
*PWR SWITCH INOPERATIVE
*SCAN SWITCH INOPERATIVE
*SEEK SWITCH INOPERATIVE
*SET SWITCH INOPERATIVE
*TAPE EJECT SWITCH INOPERATIVE
*TIME SWITCH INOPERATIVE
*TUNE SWITCH INOPERATIVE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be AM SECTION.
When Monitored and Set Condition:
AM SECTION
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a AM Section failure.
CASS ERROR
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a internal cassette failure.
192
AUDIO
Page 222 of 4284

CASSETTE COMMUNICATION FAULT
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a cassette com failure.
CASSETTE EJECT FAILURE
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a cassette eject failure.
CASSETTE LOADING FAILURE
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a cassette loading failure.
CASSETTE TAPE TENSION HIGH
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a internal cassette failure.
CASSETTE TAPE TENSION LOW
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a internal cassette failure.
CD ERROR
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a internal CD failure.
CD MECHANICAL FAILURE
When Monitored: Continuously with the ignition and CD player turned on.
Set Condition: The code will set if the radio detects a CD mechanical failure.
FM SECTION
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a FM Section failure.
RADIO ERROR
When Monitored: Continuously with the ignition and radio turned on.
Set Condition: The code will set if the radio detects a internal radio failure.
193
AUDIO
AM SECTION ÐContinued
Page 223 of 4284
POSSIBLE CAUSES
INTERNAL FAILURE
TEST ACTION APPLICABILITY
1NOTE: If a DTC is set, erase the DTC and attempt to reset the DTC. If DTC
resets, follow this test.
This is an internal radio failure.
View repairAll
Repair
Replace the Radio.
Perform BODY VERIFICATION TEST - VER 1.
194
AUDIO
AM SECTION ÐContinued
Page 224 of 4284
Symptom:
CD CHANGER MECHANICAL FAILURE
When Monitored and Set Condition:
CD CHANGER MECHANICAL FAILURE
When Monitored: Continuously with the ignition and CD Changer turned on.
Set Condition: The code will set if the CD Changer detects a mechanical failure.
POSSIBLE CAUSES
INTERNAL FAILURE
TEST ACTION APPLICABILITY
1 This is an internal CD Changer failure.
View repairAll
Repair
Replace the CD Changer.
Perform BODY VERIFICATION TEST - VER 1.
195
AUDIO
Page 225 of 4284

Symptom List:
CD CHANGER PLAY FAILURE
CD CHANGER READ FAILURE
IMPROPER DISK IN CD CHANGER
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be CD CHANGER PLAY FAILURE.
When Monitored and Set Condition:
CD CHANGER PLAY FAILURE
When Monitored: Continuously with the ignition and CD Changer turned on.
Set Condition: If the CD is scratched, dirty, so that the head cannot play the disk, the
code will set.
CD CHANGER READ FAILURE
When Monitored: Continuously with the ignition and CD Changer turned on.
Set Condition: The code will set if a CD that is not formatted as a music CD is installed
in the CD Changer.
IMPROPER DISK IN CD CHANGER
When Monitored: Continuously with the ignition and CD Changer turned on.
Set Condition: The code will set if a CD that is not formatted as a music CD is installed
in the CD Changer.
POSSIBLE CAUSES
CD CHANGER PLAY OR READ FAILURE
TEST ACTION APPLICABILITY
1 Replace the problem CD with a good, clean, unscratched, music CD.
Turn the radio on and select the good CD.
With the DRBIIIt, read DTC's.
Does the DRBIIItdisplay CD CHANGER PLAY FAILURE, READ FAILURE, or
IMPROPER DISK IN CD CHANGER?All
Ye s®Replace the CD Changer.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
196
AUDIO
Page 226 of 4284
Symptom:
CD CHANGER POWER SUPPLY TOO HIGH
When Monitored and Set Condition:
CD CHANGER POWER SUPPLY TOO HIGH
When Monitored: Continuously with the ignition and CD Changer turned on.
Set Condition: The code will set if the radio detects voltage above 16.0 volts for 5 seconds.
POSSIBLE CAUSES
CD CHANGER POWER SUPPLY TOO HIGH
POWER SUPPLY OF CD CHANGER
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the CD Changer harness connector.
Start the engine.
Measure the voltage of the Ignition Switch Output circuit.
Is the voltage above 16.0 volts?All
Ye s®Repair the charging system as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the CD Changer.
Perform BODY VERIFICATION TEST - VER 1.
197
AUDIO