Chrysler Voyager. Manual — part 230

TEST

ACTION

APPLICABILITY

4

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 Body Control Module in accordance with the service

information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

347

COMMUNICATION

MIC MESSAGES NOT RECEIVED —

Continued

Symptom:

MSM MESSAGES NOT RECEIVED

When Monitored and Set Condition:

MSM MESSAGES NOT RECEIVED

When Monitored:

With the ignition in run, and the IOD fuse installed.

Set Condition:

The BCM does not receive any messages from the Memory Seat Module

(MSM) for at least 0.125 seconds.

POSSIBLE CAUSES

ATTEMPT TO COMMUNICATE WITH THE MEMORY SEAT MODULE

BODY CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRB, enter Body then Memory Seat Module.
Was the DRB able to I/D or communicate with the MSM?

All

Yes

→ Go To 2

No

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

Perform BODY VERIFICATION TEST - VER 1.

2

With the DRB, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRB, read DTC’s.
Did this DTC reset?

All

Yes

→ Replace the Body Control Module in accordance with the service

information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

348

COMMUNICATION

Symptom:

NO PCI MESSAGES FROM CD CHANGER

When Monitored and Set Condition:

NO PCI MESSAGES FROM CD CHANGER

When Monitored:

With the ignition on and the radio on.

Set Condition:

If the DRB interrogates the CD Changer and does not receive the proper

response from the CD Changer.

POSSIBLE CAUSES

CD CHANGER (DIN) CABLE

CD CHANGER PCI BUS CIRCUIT OPEN

IGNITION SWITCH OUTPUT CIRCUIT OPEN

RADIO GROUND CKT OPEN

CD CHANGER

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
Disconnect the Radio C2 connector (DIN cable) from the Radio and the CD Changer.
Visually inspect the cable for damage.
In the next step check for open wires in the DIN cable.
Measure the resistance of the each DIN cable circuit between the Radio DIN cable
connector and the CD Changer DIN cable connector.
In the next step check for wires shorted to the DIN cable metal connectors.
Measure the resistance between each Radio C2 connector ( DIN cable) circuit and the
Radio Din cable metal connector.
Is the DIN cable circuits shorted together or open?

All

Yes

→ Replace the CD Changer (DIN) cable.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 2

349

COMMUNICATION

TEST

ACTION

APPLICABILITY

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

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. 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?

All

Yes

→ Go To 3

No

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

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?

All

Yes

→ Go To 4

No

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

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?

All

Yes

→ Go To 5

No

→ Replace the Radio.

Perform BODY VERIFICATION TEST - VER 1.

5

If there are no possible causes remaining, view repair.

All

Repair

Replace the CD Changer.
Perform BODY VERIFICATION TEST - VER 1.

350

COMMUNICATION

NO PCI MESSAGES FROM CD CHANGER —

Continued