Chrysler Pacifica. Manual — part 151

Symptom:

PAS FRONT DOOR MESSAGE MISSING (ACTIVE) - ATC

When Monitored and Set Condition:

PAS FRONT DOOR MESSAGE MISSING (ACTIVE) - ATC

When Monitored:

With the ignition on and the IOD fuse installed.

Set Condition:

This DTC will set if the Automatic Temperature Control (ATC) does not

receive the Right Front Door Ajar message from the Passenger Door Module (PDM) for
more than 5 seconds.

POSSIBLE CAUSES

NO COMMUNICATION WITH PASSENGER DOOR MODULE (PDM)

PASSENGER DOOR MODULE (PDM) DTC(S) PRESENT

AUTOMATIC TEMPERATURE CONTROL (ATC)

PASSENGER DOOR MODULE (PDM)

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, read the active ATC DTCs.

Does the DRBIII

t display: NO COMMUNICATION WITH PDM?

All

Yes

→ Return to the Heating & A/C symptom list and choose the

symptom.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 2

2

Turn the ignition on.
With the DRBIII

t, read PDM DTCs.

Does the DRBIII

t display any DTCs?

All

Yes

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

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 3

3

Turn the ignition on.
With DRBIII

t in ATC, Monitor Display, PCI Bus Messages, look for the following

message:
9RT FR DOOR AJAR SW:9
Is

9NO RESPONSE9 displayed after this message?

All

Yes

→ Replace the Passenger Door Module (PDM) in accordance with

the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Automatic Temperature Control (ATC) in accordance

with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

601

HEATING & A/C

Symptom:

PASSENGER BLEND DOOR TRAVEL TOO SMALL (ACTIVE) - ATC

When Monitored and Set Condition:

PASSENGER BLEND DOOR TRAVEL TOO SMALL (ACTIVE) - ATC

When Monitored:

With the ignition on and the IOD fuse installed.

Set Condition:

The Automatic Temperature Control (ATC) monitors the door’s range of

travel during system initialization. If the measured range is less than expected, the DTC
will set.

POSSIBLE CAUSES

PASSENGER BLEND DOOR NOT RESPONDING DTC SET

AUTOMATIC TEMPERATURE CONTROL (ATC)

OBSTRUCTED BLEND DOOR

PASSENGER BLEND DOOR ACTUATOR

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, read the active ATC DTCs.

Does the DRBIII

t display: PASSENGER BLEND DOOR NOT RESPONDING?

All

Yes

→ Return to the Heating & A/C symptom list and choose the

symptom.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 2

2

Turn the ignition off.
Disconnect the Passenger Blend Door Actuator harness connector.
Connect a 12-volt Test Light between the Passenger Blend Door Actuator harness
connector cavities.
Turn the ignition on.
While monitoring the test light, press the PASSENGER BLEND mode switch to
change the temp setting from lo to hi.
NOTE: Observe test light for approximately 30 seconds.
Does the test light start to flash and stay flashing?

All

Yes

→ Go To 3

No

→ Replace the Automatic Temperature Control (ATC) in accordance

with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

602

HEATING & A/C

TEST

ACTION

APPLICABILITY

3

Remove the Passenger Blend Door Actuator from the A/C-Heater Housing assembly.
Rotate the passenger blend door from stop to stop. Note: The door should rotate
approximately 45 degrees from stop to stop.
Does the passenger blend door move smoothly in both directions?

All

Yes

→ Replace the Passenger Blend Door Actuator in accordance with

the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair or replace the passenger blend door as necessary in

accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

603

HEATING & A/C

PASSENGER BLEND DOOR TRAVEL TOO SMALL (ACTIVE) - ATC —

Continued

Symptom List:

PCI BUS SHORTED HIGH (ACTIVE) - ATC
PCI BUS SHORTED LOW (ACTIVE) - ATC

Test Note:

All symptoms listed above are diagnosed using the same tests.

The title for the tests will be PCI BUS SHORTED HIGH
(ACTIVE) - ATC.

When Monitored and Set Condition:

PCI BUS SHORTED HIGH (ACTIVE) - ATC

When Monitored:

With the ignition on and the IOD fuse installed.

Set Condition:

This DTC will set if the Automatic Temperature Control (ATC) detects a

short to voltage on the PCI Bus circuit.

PCI BUS SHORTED LOW (ACTIVE) - ATC

When Monitored:

With the ignition on and the IOD fuse installed.

Set Condition:

This DTC will set if the Automatic Temperature Control (ATC) detects a

short to ground on the PCI Bus circuit.

POSSIBLE CAUSES

AUTOMATIC TEMPERATURE CONTROL (ATC)

TEST

ACTION

APPLICABILITY

1

NOTE: For this DTC to be active, the DRBIII

t will not be able to communi-

cate with any modules on the vehicle except the Powertrain Control Module
(PCM).
NOTE: Do NOT perform this test unless this DTC is ACTIVE. If this DTC is
STORED, refer to PCI Bus Shorted High (Stored) or to PCI Bus Shorted Low
(Stored) in the HEATING & A/C symptom list.
View repair.

All

Repair

Replace the Automatic Temperature Control (ATC) in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.

604

HEATING & A/C