body wire harness connector for the CD changer and a
good ground. There should be continuity. If OK, go to
Step 3. If not OK, repair the open power ground circuit
to the radio receiver as required.
(3) Reconnect the battery negative cable. Check for
battery voltage at the B(+) circuit cavity of the right
body wire harness connector for the CD changer. If
OK, go to Step 4. If not OK, go to Step 5.
(4) Turn the ignition switch to the On position.
Check for battery voltage at the ignition switch out-
put circuit cavity of the right body wire harness con-
nector for the CD changer. If OK, use a DRB scan
tool and the proper Diagnostic Procedures manual for
further diagnosis. If not OK, go to Step 6.
(5) Disconnect and isolate the battery negative
cable. Remove the radio receiver from the instrument
panel. Disconnect the DIN cable connector (C4) from
the radio receiver, but do not disconnect the other
wire harness connectors. Reconnect the battery neg-
ative cable. Check for battery voltage at the B(+) cir-
cuit cavity of the DIN connector receptacle on the
radio receiver. If OK, repair the open B(+) circuit to
the CD changer as required. If not OK, check for a
shorted B(+) circuit to the CD changer and repair as
required, then replace the faulty radio receiver.
(6) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Remove the radio receiver from the instrument
panel. Disconnect the DIN cable connector (C4) from
the radio receiver, but do not disconnect the other
wire harness connectors. Reconnect the battery neg-
ative cable. Turn the ignition switch to the On posi-
tion. Check for battery voltage at the ignition switch
output circuit cavity of the DIN connector receptacle
on the radio receiver. If OK, repair the open ignition
switch output circuit to the CD changer as required.
If not OK, check for a shorted ignition switch output
circuit to the CD changer and repair as required,
then replace the faulty radio receiver.
NO SOUND OR ONLY ONE CHANNEL SOUND
FROM CD
(1) Turn the ignition switch to the On position.
Turn the radio receiver on and check its audio output
operation. If OK, go to Step 2. If not OK, refer to
Speaker in the Diagnosis and Testing section of this
group.
(2) Disconnect and isolate the battery negative
cable. Disconnect the right body wire harness connec-
tor from the CD changer connector receptacle.
Remove the radio receiver from the instrument
panel. Disconnect the DIN cable connector (C4) from
the radio receiver. Check for continuity between the
audio ground (Z4) circuit cavity of the right body
wire harness connector for the CD changer and a
good ground. There should be no continuity. If OK, go
to Step 3. If not OK, repair the shorted audio ground
(Z4) circuit as required.
(3) Check for continuity between the audio ground
(Z4) circuit cavity of the right body wire harness con-
nector for the CD changer and the audio ground (Z4)
circuit pin of the DIN cable connector for the radio
receiver. There should be continuity. If OK, go to
Step 4. If not OK, repair the open audio ground (Z4)
circuit as required.
(4) Check for continuity between the audio out
right circuit cavity of the right body wire harness
connector for the CD changer and a good ground.
There should be no continuity. If OK, go to Step 5. If
not OK, repair the shorted audio out right circuit as
required.
(5) Check for continuity between the audio out
right circuit cavity of the right body wire harness
connector for the CD changer and the audio out right
circuit pin of the DIN cable connector for the radio
receiver. There should be continuity. If OK, go to
Step 6. If not OK, repair the open audio out right cir-
cuit as required.
(6) Check for continuity between the audio out left
circuit cavity of the right body wire harness connec-
tor for the CD changer and a good ground. There
should be no continuity. If OK, go to Step 7. If not
OK, repair the shorted audio out left circuit as
required.
(7) Check for continuity between the audio out left
circuit cavity of the right body wire harness connec-
tor for the CD changer and the audio out left circuit
pin of the DIN cable connector for the radio receiver.
There should be continuity. If OK, replace the faulty
CD change. If not OK, repair the open audio out left
circuit as required.
REMOTE RADIO SWITCH
For complete circuit diagrams, refer to Audio Sys-
tem in the Contents of Group 8W - Wiring Diagrams.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
REFER TO GROUP 8M - PASSIVE RESTRAINT SYS-
TEMS BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL COM-
PONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable. Remove the remote radio switch(es) (Fig. 2)
from the steering wheel.
(2) Use an ohmmeter to check the switch resis-
tances as shown in the Remote Radio Switch Test
chart. If the remote radio switch resistances check
OK, go to Step 3. If not OK, replace the faulty
switch.
8F - 8
AUDIO SYSTEMS
WJ
DIAGNOSIS AND TESTING (Continued)