Stratus L4-2.4L DOHC (1995)
Air Door Actuator / Motor: Customer Interest
Heater, A/C System - Stuck in Defrost Mode
NO: 24-12-95
GROUP: Heater & A/C
EFFECTIVE DATE: Aug. 18, 1995
SUBJECT:
HVAC System
Stuck in Defrost Mode
MODELS:
1995 (JA) Cirrus/Stratus
SYMPTOM/CONDITION:
HVAC system stuck in defrost mode. May be intermittent.
DIAGNOSIS:
Check Diagnostic Trouble Codes (DTC's) in the Body Control Module (BCM). If no DTC's exist and vehicle is no longer stuck in defrost, perform all
steps in the repair procedure (Steps 1 through 5).
For a "HVAC Mode Door Feedback Failure", proceed to step # 1.
For a "HVAC Control Head Input Shorted To Ground/Shorted To Battery", refer to the 1995 Cirrus/Stratus Body Diagnostic Procedure Manual
(Publication No. 81-699-94029), Section 7.0, "Manual A/C System".
PARTS REQUIRED:
AR
4864052
Wiring Connector Repair Kit, Mode Actuator Connector
AR
4644834
Actuator, HVAC Mode
AR
4856997
Body Control Module, Vendor Part, Order on DIAL Function 11
AR
4864311
Wiring Connector Repair Kit, HVAC Control Head Connector
REPAIR PROCEDURE:
This bulletin involves testing and replacing the HVAC Mode Actuator/Connector, Control
Head Connector, or Body Control Module as necessary.
1.
Check Mode Actuator connector (C215) for full insertion/locking into Mode Actuator and spread terminals. Repair as necessary. The terminals in
question are referenced on Page 8W-80-27 of the 1995 JA Service Manual (Publication No. 81-270-5121). In connector C215 check cavities # 2
through # 4. A visual check is not sufficient. A .0044" pin gauge is required. Repair any spread terminals with wiring connector repair kit P/N
4864052. Replace HVAC Mode Actuator P/N 4644834.
2.
Check BCM P/N. If it is not P/N 4856997, replace. Proceed to step # 4.
3.
Check HVAC Control Head connector (C204) for full insertion/locking into Control Head and for spread terminals. Repair as necessary. The
terminals in question are referenced on Page 8W-80-23 of the 1995 JA Service Manual (Publication No. 81-270-5121). In connector C204 check
cavities # 5 and # 8. A .0040" pin gauge is required. Repair any spread terminals with wiring connector repair kit P/N 4864311.
4.
Check battery voltage. If not above 11.5 volts, charge battery. Check for charging system problems. Perform "On Vehicle Battery Test
Procedures" as outlined in section 8A of the 1995 JA Service Manual.
5.
Assure ignition is off and key is out. Pull IOD fuse (10A, cavity # 5 in Junction Block). Do not replace for a least 1 minute. This will clear all
BCM faults and cause the HVAC to recalibrate when ignition is turned to the "RUN" position.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No:
24-55-22-90
Check DTC's, Replace
0.5 Hrs.
HVAC Mode Actuator
FAILURE CODE: P8 - New Part
