Intrepid V6-3.2L VIN J (1998)
Air Door Actuator / Motor: Customer Interest
A/C System - Lack of Cold Air/Blend Door DTC 23 Set
NO: 24-13-98
GROUP: Air Conditioning
DATE: Sep. 18, 1998
SUBJECT:
Lack of Cold Air From
A/C & DTC "Blend
Door Feedback"
MODELS:
1998 - 1999 (LH) Concorde/Intrepid/LHS
SYMPTOM/CONDITION:
Lack of cold air from the climate control system and the Scan Tool (DRBIII(R)) indicates a Diagnostic Trouble Code (DTC) of "BLEND DOOR
FEEDBACK." Clearing the DTC with the DRBIII(R) causes the system to return to normal operation providing cold air.
DIAGNOSIS:
Place climate control system on full fan speed, and lowest temperature setting in the "Outside Air" panel mode. Measure temperature of the air
discharged.
With the DRBIII(R) check DTCs in the Body Controller. Verify that DTC "BLEND DOOR FEEDBACK" exists. Do not check for DTCs by using the
"on board" Climate Control Head Diagnostics method. This may erase an existing DTC.
If DTC "BLEND DOOR FEEDBACK" code exists then use the DRBIII(R) to measure the Blend Door Actuator Feedback Voltage. Record the voltage.
If DTC "BLEND DOOR FEEDBACK" does not exist then lack of cold air is not due to this DTC. Refer to page 24-8 of the 1999
Concorde/Intrepid/LHS/300M Service Manual (Publication No. 81-270-9140) for diagnosis of lack of cold air from the climate control system.
Check the operation of the blend door actuator feedback strip by using the "on board" Climate Control Head Diagnostics. Refer to page 24-9 of the 1999
Concorde/Intrepid/LHS/300M Service Manual (Publication No. 81-270-9140) under TROUBLE CODES FROM THE ATC CONTROL or TROUBLE
CODES FROM THE MANUAL A/C CONTROL. The electronics will move the Blend Door Actuator from end to end and check the feedback strip. If
DTC 23 "Blend Door Actuator Feedback Failure" occurs, then there may be a problem with the HVAC blend door, blend door actuator or associated
wiring and not a problem with the Body Control Module (BCM).
If DTC 23 does not appear check to see if the air temperature from the PANEL outlets returns to proper cold air operation. Select the lowest temperature
setting and measure the Blend Door Actuator Feedback Voltage again with the DRBIII(R).
Only replace the Body Control Module if all of the following conditions are met:
1.
The Climate Control System initially cannot provide cold air at the full cold temperature setting.
2.
Initially a "BLEND DOOR FEEDBACK" DTC was found by the DRBIII(R).
3.
The blend door DTC 23 does not appear after testing the blend door actuator with the "on board" climate control diagnostics.
4.
The system returns to providing cold air after running the "on board" climate control diagnostics.
5.
The blend door actuator feedback voltage measured by the DRBIII(R) in the full cold temperature setting has decreased more than 0.5 volt by
running the "on board" climate control diagnostics.
PARTS REQUIRED:
1
04759532AL
Module, Body Control
(This module or later versions has the
revised software)
NOTE:
THESE BODY CONTROL MODULES CAN ONLY BE ORDERED THROUGH D.I.A.L. FUNCTION 11 (THE V.I.N. AND VEHICLE
