Chrysler Town and Country 2003 Owner's Manual page 374

COMMUNICATION
NO PCI MESSAGES FROM CD CHANGER —
TEST
2 Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIII select Pep Module Tools.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Set Probe to x10.
Press F2 again when complete.
Disconnect the CD Changer harness connector (DIN cable).
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the CD Changer DIN Cable connector.
Reconnect the Radio C2 (DIN Cable) harness connector.
Turn the ignition on.
Turn the Radio and CD Changer on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?
Yes → Go To 3
→ Replace the Radio.
No
3 Turn the ignition off.
Disconnect the CD Changer harness connector (DIN cable).
Turn the ignition on.
Turn the Radio and the CD Changer on.
Using a 12-volt test light connected to ground, probe the Ignition Switch Output
circuit in the CD Changer DIN Cable connector.
Is the test light illuminated?
Yes → Go To 4
→ Replace the Radio.
No
4 Turn the ignition off.
Disconnect the CD Changer harness connector (DIN cable).
Using a 12-volt test light connected to 12-volts, probe each CD Changer ground
circuit in the CD Changer connector (DIN cable).
Is the test light illuminated for each circuit?
Yes → Go To 5
→ Replace the Radio.
No
5 If there are no possible causes remaining, view repair.
Repair
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Replace the CD Changer.
Perform BODY VERIFICATION TEST - VER 1.
Continued
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APPLICABILITY
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