Chrysler Pacifica. Manual — part 185

Symptom:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO BATTERY -
PDM

When Monitored and Set Condition:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO BATTERY - PDM

When Monitored:

No Accessory power, ignition switch off and accessory power delay

removed.

Set Condition:

If the Illumination Driver circuit is shorted to battery over 10 seconds.

POSSIBLE CAUSES

DTC PRESENT

POWER SEAT SWITCH

PASSENGER DOOR SWITCH ILLUMINATION DRIVER SHORT TO BATTERY

PASSENGER DOOR MODULE

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, erase DTCs.

Cycle the ignition switch Off, On and back Off. Open the door (to cancel accessory
power delay).
With the DRBIII

t, read DTCs.

Did the same DTC return?

All

Yes

→ Go To 2

No

→ The conditions required to set the code are currently not present.

Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.

2

Turn the ignition off.
Disconnect the power seat switch connector.
Turn the ignition on.
Using the DRBIII

t, erase DTC’s.

Cycle the ignition switch back Off and Open the door.
With the DRBIII

t, read DTC’s.

Did the same DTC return?

All

Yes

→ Go To 3

No

→ Replace the power seat switch.

3

Turn the ignition off.
Disconnect the Power Seat Switch connector.
Turn the ignition on.
Measure the voltage of the Passenger Door Switch Illumination Driver circuit.
Is the voltage above 1.0 volts?

All

Yes

→ Repair the Passenger Door Switch Illumination Driver circuit for

a short to voltage.

No

→ Replace the Passenger Door Module.

737

INTERIOR LIGHTING

Symptom:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO GROUND -
DDM

When Monitored and Set Condition:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO GROUND - DDM

When Monitored:

Accessory power applied (including accessory delay), ignition switch in

accessory or on.

Set Condition:

If the Illumination Driver circuit is shorted to ground over 10 seconds.

POSSIBLE CAUSES

DTC PRESENT

POWER SEAT SWITCH

DRIVER DOOR SWITCH ILLUMINATION DRIVER SHORTED TO GROUND

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, erase DTCs.

Cycle the ignition switch Off then back On.
Attempt to turn the heated seats on and wait 10 seconds.
With the DRBIII

t, read DTCs.

Did the same DTC return?

All

Yes

→ Go To 2

No

→ The conditions required to set the code are currently not present.

Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.

2

Turn the ignition off.
Disconnect the Passenger Power Seat Switch connector.
Disconnect the Passenger Door Module C2 connector.
Inspect the Driver Door Switch Illumination Driver circuit for a short to ground or to
another circuit in the seat switch harness.
Were there any problems found?

All

Yes

→ Repair the Driver Door Switch Illumination Driver circuit for a

short to ground.

No

→ Replace the power seat switch.

738

INTERIOR LIGHTING

Symptom:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO GROUND -
PDM

When Monitored and Set Condition:

SEAT SWITCH ILLUMINATION OUTPUT SHORT TO GROUND - PDM

When Monitored:

Accessory power applied (including accessory delay), ignition switch in

accessory or on.

Set Condition:

If the Illumination Driver circuit is shorted to ground over 10 seconds.

POSSIBLE CAUSES

DTC PRESENT

POWER SEAT SWITCH

PASSENGER DOOR SWITCH ILLUMINATION DRIVER SHORTED TO GROUND

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, erase DTCs.

Cycle the ignition switch Off then back On and wait 10 seconds.
Attempt to turn the heated seats on and wait 10 seconds.
With the DRBIII

t, read DTCs.

Did the same DTC return?

All

Yes

→ Go To 2

No

→ The conditions required to set the code are currently not present.

Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.

2

Turn the ignition off.
Disconnect the Passenger Power Seat Switch connector.
Disconnect the Passenger Door Module C2 connector.
Inspect the Passenger Seat Switch Illumination Driver circuit for a short to ground
or to another circuit in the seat switch harness.
Were there any problems found?

All

Yes

→ Repair the Passenger Door Switch Illumination Driver circuit for

a short to ground.

No

→ Replace the power seat switch.

739

INTERIOR LIGHTING

Symptom:

AMP MESSAGES NOT RECEIVED

When Monitored and Set Condition:

AMP MESSAGES NOT RECEIVED

When Monitored:

At all times.

Set Condition:

This DTC will set if the NAV Module does not receive 5 consecutive PCI

bus messages from the AMP. The code will clear after 50 ignition cycles.

POSSIBLE CAUSES

DTC INTERMITTENT CONDITION

COMM FAULT PRESENT

NAVIGATION UNIT

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, erase DTCs.

Cycle the ignition switch from on to off and then back to on..
Turn the Navigation System on and try to select a location.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display AMP MESSAGES NOT RECEIVED?

All

No

→ The condition is not present at this time. Monitor DRBIIIt

parameters while wiggling the related wire harness. Refer to any
Technical Service bulletins (TSB) that may apply. Visually inspect
the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.

Yes

→ Go To 2

2

Turn the ignition on.
With the DRBIII

t, attempt to communicate with the AMP.

Was the DRBIII

t able to communicate with the AMP?

All

Yes

→ Replace the Navigation Unit in accordance with the Service

Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Refer to COMMUNICATION for the related symptom(s).

Perform BODY VERIFICATION TEST - VER 1.

740

NAVIGATION