Chrysler Pacifica. Manual — part 155
Symptom:
VEHICLE ODOMETER FAILURE (ACTIVE) - MTC
When Monitored and Set Condition:
VEHICLE ODOMETER FAILURE (ACTIVE) - MTC
When Monitored:
With the ignition on.
Set Condition:
This DTC will set if the A/C Heater Control does not receive the Vehicle
Odometer message from the Body Control Module (BCM) for more than 5 seconds.
POSSIBLE CAUSES
PCI BUS CIRCUIT FAULT
BODY CONTROL MODULE (BCM) DTC(S) PRESENT
A/C HEATER CONTROL
BODY CONTROL MODULE (BCM)
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the Body Control Module (BCM).
Was the DRBIII
t able to communicate with the Body Control Module (BCM)?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(s)
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, read Body Control Module (BCM) 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 the DRBIII
t in HVAC, select Monitor Display and then select PCI Bus
Messages. From the list, select
9ODO MSG PRESENT.9
Does the DRBIII
t display: ODO MSG PRESENT: YES?
All
Yes
→ Replace the A/C Heater Control in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and program the Body Control Module (BCM) in accor-
dance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
617
HEATING & A/C
Symptom:
VEHICLE ODOMETER MESSAGE MISSING (ACTIVE) - ATC
When Monitored and Set Condition:
VEHICLE ODOMETER 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 Vehicle Odometer message from the Body Control Module (BCM) for more than
5 seconds.
POSSIBLE CAUSES
NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)
BODY CONTROL MODULE (BCM) DTC(S) PRESENT
AUTOMATIC TEMPERATURE CONTROL (ATC)
BODY CONTROL MODULE (BCM)
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 BCM?
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 BCM 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 the DRBIII
t in ATC, Monitor Display, PCI Bus Messages, look for the following
message:
9ODO MSG PRESENT:9
Does the DRBIII
t display: ODO MSG PRESENT: YES?
All
Yes
→ Replace the Automatic Temperature Control ATC in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module (BCM) in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
618
HEATING & A/C
Symptom:
VEHICLE SPEED/RPM MESSAGE MISSING (ACTIVE) - ATC
When Monitored and Set Condition:
VEHICLE SPEED/RPM 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 message from the Powertrain Control Module (PCM) for more than 2 seconds.
This message provides Engine RPM and Vehicle Speed.
POSSIBLE CAUSES
NO COMMUNICATION WITH POWERTRAIN CONTROL MODULE (PCM)
POWERTRAIN CONTROL MODULE (PCM) DTC(S) PRESENT
AUTOMATIC TEMPERATURE CONTROL (ATC)
POWERTRAIN CONTROL MODULE (PCM)
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 PCM?
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 PCM DTCs.
Does the DRBIII
t display any DTCs?
All
Yes
→ Refer to the Powertrain Diagnostic Information 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
messages:
9ENGINE RPM:9
9VEHICLE SPEED:9
Is
9NO RESPONSE9 displayed after either of these messages?
All
Yes
→ Replace the Powertrain Control Module (PCM) 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.
619
HEATING & A/C
Symptom:
VF DIMMING MESSAGE MISSING (ACTIVE) - ATC
When Monitored and Set Condition:
VF DIMMING MESSAGE MISSING (ACTIVE) - ATC
When Monitored:
With the ignition on and the IOD fuse installed.
Set Condition:
If the Automatic Temperature Control (ATC) does not receive the VF
Dimming message from the Body Control Module (BCM) for more than 5 seconds, then the
VF display will default to daytime brightness and the DTC will set.
POSSIBLE CAUSES
NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)
BODY CONTROL MODULE (BCM) DTC(S) PRESENT
DIMMING MESSAGE NOT SEEN AT RATE EXPECTED
AUTOMATIC TEMPERATURE CONTROL (ATC)
BODY CONTROL MODULE (BCM)
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 BCM?
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 BCM 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
NOTE: Make sure that the Panel Dimmer switch is not in set in Funeral
Mode.
Turn the ignition on.
Press the ATC Power switch on.
Watch the ATC display panel while turning the Headlamp switch on and then off.
Did the VF segments dim when the Headlamp switch was turned on?
All
Yes
→ No problem found at this time.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
620
HEATING & A/C
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