Manual climate control

SERVANT387

MEMBER
1998 DODGE INTREPID
6 CYL
FWD
AUTOMATIC

1998 Intrepid. Air works but wont blow from dash vents. Only blows from floor or defroster. Got ac code 23 and 24

Friday, August 5th, 2011 AT 5:45 AM

1 Reply

KHLOW2008

MECHANIC
41,814 POSTS

Code 23 is Blend Air Door Actuator Feedback Failure.

TEST 4A: BLEND DOOR INPUT OPEN OR SHORTED TO GROUND

1. Using scan tool, clear DTC. Turn ignition off. Disconnect A/C-heater control head White 12-pin (C1) connector. Ensure connector terminals are clean, tight and not damaged. Repair as necessary.

2. Turn ignition on. Using an external voltmeter, measure voltage between ground and control head 12-pin connector terminal No. 5 (White wire). If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open in White wire between junction block and A/C-heater control head. Perform VERIFICATION TEST.

3. Locate Body Control Module (BCM), attached to junction block, at left end of instrument panel. Turn ignition off. Disconnect BCM Black 24-pin (C2) connector. Using an external ohmmeter, measure resistance between ground and control head White 12-pin connector terminal No. 9 (Yellow/Orange wire). If resistance is 50 ohms or more, go to next step. If resistance is less than 50 ohms, repair short to ground in Yellow/Orange wire. Perform VERIFICATION TEST.

4. Ensure ignition is off. Connect a jumper wire between ground and BCM 24-pin connector terminal No. 12 (Yellow/Orange wire). Using an external ohmmeter, measure resistance between ground and control head White 12-pin connector terminal No. 9 (Yellow/Orange wire). If resistance is 5.0 ohms or more, go to next step. If resistance is less than 5.0 ohms, repair open in Yellow/Orange wire. Perform VERIFICATION TEST.

5. Ensure ignition is off. Reconnect control head 12-pin connector. Turn ignition on. Using an external voltmeter, measure voltage between ground and BCM 24-pin connector terminal No. 12 (Yellow/Orange wire). Move temperature control selector from cold to hot position. If voltage changes smoothly, replace BCM. If voltage does not change smoothly, replace A/C-heater control head. Perform VERIFICATION TEST.

Code 24 is Mode Door Actuator Feedback Failure.

TEST 6A: MODE DOOR INPUT OPEN OR SHORTED TO BATTERY VOLTAGE

1. Using scan tool, clear DTC. Turn ignition off. Disconnect A/C-heater control head White 12-pin (C1) connector. Disconnect BCM Black 24-pin (C2) connector. Ensure terminals of both connectors are clean, tight and not damaged. Repair as necessary.

2. Turn ignition on. Using an external voltmeter, measure voltage between ground and BCM 24-pin connector terminal No. 22 (Red/Tan wire). If voltage is 0.5 volt or less, go to next step. If voltage is more than 0.5 volt, repair short to battery voltage in Red/Tan wire. Perform VERIFICATION TEST.

3. Turn ignition off. Connect a jumper wire between ground and BCM 24-pin connector terminal No. 22 (Red/Tan wire). Using an external ohmmeter, measure resistance between ground and control head 12-pin connector terminal No. 10 (Red/Tan wire). If resistance is less than 5.0 ohms, go to next step. If resistance is 5.0 ohms or more, repair open in Red/Tan wire. Perform VERIFICATION TEST.

4. Remove jumper wire. Reconnect BCM 24-in connector. Turn ignition on. Using an external voltmeter, measure voltage between ground and control head 12-pin connector terminal No. 10 (Red/Tan wire). If voltage is more than 4.9 volts, replace A/C-heater control head. If voltage is 4.9 volts or less, replace BCM. Perform VERIFICATION TEST.