Chrysler Town, Dodge Caravan. Manual — part 755
Symptom:
RECIRC DOOR TRAVEL TOO LARGE (ACTIVE)
When Monitored and Set Condition:
RECIRC DOOR TRAVEL TOO LARGE (ACTIVE)
When Monitored:
Ignition in RUN and IOD fuse installed.
Set Condition:
This DTC is set when the ATC monitors the travel range during system
initialization and the measured range is greater than expected.
POSSIBLE CAUSES
CHECK THE ATC FOR DTCS
RECIRCULATION DOOR ACTUATOR
RECIRCULATION DOOR LINKAGE
ATC
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, read the active ATC DTCs.
Is the RECIRC DOOR NOT RESPONDING DTC set?
All
Yes
→ Return to the symptom list and choose the symptom.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Remove the Recirculation Door Actuator.
By hand, attempt to rotate the Recirculation Door Actuator in both directions.
Did the Recirculation Door Actuator turn in either direction?
All
Yes
→ Replace the Recirculation Door Actuator.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Remove the Recirculation Door Actuator. Rotate the recirculation door (door only).
Note: This should rotate approximately 45 degrees from stop to stop.
Inspect the recirculation door linkage for excessive wear or missing linkage.
Were any mechanical problems found?
All
Yes
→ Repair or replace the recirculation door/linkage as necessary.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the ATC.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
256
AUTOMATIC TEMPERATURE CONTROL
Symptom:
RECIRC DOOR TRAVEL TOO SMALL (ACTIVE)
When Monitored and Set Condition:
RECIRC DOOR TRAVEL TOO SMALL (ACTIVE)
When Monitored:
Ignition in RUN and IOD fuse installed.
Set Condition:
This DTC is set when the ATC monitors the travel range during system
initialization and the measured range is less than expected.
POSSIBLE CAUSES
CHECK THE ATC FOR DTCS
ATC
OBSTRUCTED RECIRC DOOR
RECIRCULATION DOOR ACTUATOR
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, read the active ATC DTCs.
Is the RECIRC DOOR NOT RESPONDING DTC set?
All
Yes
→ Return to the symptom list and choose the symptom.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Recirculation Door Actuator harness connector.
Connect a 12-volt Test Light between the Recirculation Door Driver (A) and (B)
circuits.
Turn the ignition on.
While monitoring the test light, press the recirculation control button from off to on.
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 ATC.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
3
Remove the Recirculation Door Actuator. Rotate the recirculation door (door only).
Note: This should rotate approximately 45 degrees from stop to stop.
Does the recirculation door move smoothly in both directions?
All
Yes
→ Replace the Recirculation Door Actuator.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair or replace the recirculation door as necessary.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
257
AUTOMATIC TEMPERATURE CONTROL
Symptom:
*ATC HEAD LED(S)/BACK LIGHTING INOPERATIVE
POSSIBLE CAUSES
CHECK FOR ATC DTCS
CHECK FOR BCM DTCS
ATC - LED(S) INOPERATIVE
ATC - BACK LIGHTING INOPERATIVE
PANEL LAMPS DRIVER CIRCUIT OPEN
BODY CONTROL MODULE - PANEL LAMPS DRIVER OPEN
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read ATC DTCs.
Does the DRBIII
t display any ATC DTCs?
All
Yes
→ Return to the symptom list and choose the symptom(s).
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition on.
With the DRBIII
t, read the BCM DTCs.
Does DRBIII
t display Headlamp Switch: Mismatch; STG; Open; or Panel Dim
Output Short?
All
Yes
→ Refer to symptoms Headlamp Switch Mismatch, Headlamp
Switch Shorted To Ground, and Headlamp Switch Open in the
Exterior Lighting catagory. Refer to symptom Panel Dimming
Output Short in the Instrument Cluster catagory.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition on.
Turn the ATC Power switch on.
NOTE: Compare with a known good ATC Head.
Operate all ATC switches (Front Fan, Rear System, Temp, Mode, A/C, Recirc, Rear
Defog) while looking at the display and lights on the ATC Head.
Are all of the LEDs operating properly?
All
Yes
→ Go To 4
No
→ Replace the ATC in accordance with the Service Information.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
258
AUTOMATIC TEMPERATURE CONTROL
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Rotate the Panel Lamps Dimmer switch to the off position.
Disconnect the ATC C2 harness connector.
Turn the park lamps on.
Measure the voltage of the Panel Lamps Driver circuit while rotating the Panel
Lamps Dimmer switch from the off position to the full brightness position.
Does the voltage change from approximately 2.5 volts to 11.5 volts?
All
Yes
→ Replace the ATC in accordance with the Service Information.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the ATC C2 harness connector.
Disconnect the Body Control Module C4 harness connector.
Measure the resistance of the Panel Lamps Driver circuit between the ATC C2
harness connector and the Body Control Module C4 harness connector.
Is the resistance below 5 ohms?
All
Yes
→ Replace the Body Control Module in accordance with the Service
Information.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Panel Lamps Driver circuit for an open.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
259
AUTOMATIC TEMPERATURE CONTROL
*ATC HEAD LED(S)/BACK LIGHTING INOPERATIVE —
Continued
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