Chrysler Pacifica. Manual - part 78

TEST

ACTION

APPLICABILITY

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

t 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. Press F2 again
when complete.
Disconnect the CD/DVD Changer harness connector.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the CD/DVD Changer connector.
Reconnect the Radio C2 harness connector.
Turn the ignition on.
Turn the Radio and CD/DVD Changer on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?

All

Yes

→ Go To 4

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the CD/DVD Changer harness connector.
Turn the ignition on.
Turn the Radio and the CD/DVD Changer on.
Using a 12-volt test light connected to ground, probe the Ignition RUN/ACC Signal
circuit.
Is the test light illuminated?

All

Yes

→ Go To 5

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the CD/DVD Changer harness connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
Is the test light illuminated?

All

Yes

→ Replace the CD/DVD Changer in accordance with the service

information
Perform BODY VERIFICATION TEST - VER 1.

→ Repair the ground circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

309

AUDIO

NO COMMUNICATION WITH CD/DVD CHANGER - RADIO —

Continued

Symptom:

NO COMMUNICATION WITH NAV - RADIO

When Monitored and Set Condition:

NO COMMUNICATION WITH NAV - RADIO

When Monitored:

With the ignition on.

Set Condition:

The module misses 5 successive periodic messages or has not received an

in frame response after 3 consecutive retries.

POSSIBLE CAUSES

ATTEMPT TO COMMUNICATE WITH THE NAVIGATION MODULE

RADIO

TEST

ACTION

APPLICABILITY

Turn the ignition on.
With the DRBIII

t, attempt to communicate with the navigation module.

Was the DRBIII

t able to I/D or communicate with the NAV?

All

Yes

→ Go To 2

→ Refer to the Communication category for the related symptom(s).

Perform BODY VERIFICATION TEST - VER 1.

With the DRBIII

t, erase DTC’s.

Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII

t, read DTC’s.

Did this DTC reset?

All

Yes

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

→ Test Complete.

310

AUDIO

Symptom:

NO COMMUNICATION WITH SDARS - RADIO

When Monitored and Set Condition:

NO COMMUNICATION WITH SDARS - RADIO

When Monitored:

With the ignition on.

Set Condition:

The module misses 5 successive periodic messages or has not received an

in frame response after 3 consecutive retries.

POSSIBLE CAUSES

SDARS WIRING HARNESS

PCI BUS CIRCUIT OPEN

IGNITION RUN/ACC SIGNAL CIRCUIT OPEN

RADIO GROUND CKT OPEN

SATELLITE RADIO RECEIVER

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the Radio C2 harness connector.
Disconnect the Satellite Radio Receiver Module harness connector.
Visually inspect the connectors for damage.
Check for open circuits in the wiring harness between the Radio and the Satellite
Radio Receiver.
Measure the resistance of the each circuit between the Radio C2 connector and the
Satellite Radio Receiver connector.
Check for shorted circuits in the wiring harness between the Radio and the Satellite
Radio Receiver.
Measure the resistance between each circuit at the Radio C2 connector.
NOTE: If vehicle is equipped with a satellite radio multiplexer, check
connectors. This device is a pass through for the satellite radio receiver
circuits.
Are any of the circuits shorted together or open?

All

Yes

→ Replace/repair the SDARS wiring harness.

Perform BODY VERIFICATION TEST - VER 1.

→ Go To 2

311

AUDIO

TEST

ACTION

APPLICABILITY

t 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. Press F2 again
when complete.
Disconnect the Satellite Radio Receiver harness connector.
NOTE: If vehicle is equipped with a satellite radio multiplexer, check
connectors. This device is a pass through for the satellite radio receiver
circuits.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the Satellite Radio Receiver connector.
Reconnect the Radio C2 harness connector.
Turn the ignition on.
Turn the Radio and place the radio in the Satellite mode.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?

All

Yes

→ Go To 3

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the Satellite Radio Receiver harness connector.
NOTE: If vehicle is equipped with a satellite radio multiplexer, check
connectors. This device is a pass through for the satellite radio receiver
circuits.
Turn the ignition on.
Turn the Radio and place the radio in the Satellite mode.
Using a 12-volt test light connected to ground, probe the Ignition RUN/ACC Signal
circuit.
Is the test light illuminated?

All

Yes

→ Go To 4

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

Turn the ignition off.
Disconnect the Satellite Radio Receiver harness connector.
NOTE: If vehicle is equipped with a satellite radio multiplexer, check
connectors. This device is a pass through for the satellite radio receiver
circuits.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
Is the test light illuminated?

All

Yes

→ Replace the Satellite Radio Receiver in accordance with the

service information
Perform BODY VERIFICATION TEST - VER 1.

→ Repair the ground circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

312

AUDIO

NO COMMUNICATION WITH SDARS - RADIO —

Continued

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