Removal; Installation; A/C Heater Control; Description - Dodge Dakota Sport 2001 Service Manual

AN
A/C COMPRESSOR CLUTCH RELAY (Continued)
tery voltage at the cavity for relay terminal 30 at all
times. If OK, go to Step 2. If not OK, repair the open
circuit to the fuse in the PDC as required.
(2) The relay normally closed terminal (87A) is not
used in this application. Go to Step 3.
(3) The relay normally open terminal cavity (87) is
connected to the compressor clutch coil. There should
be continuity between this cavity and the A/C com-
pressor clutch relay output circuit cavity of the com-
pressor clutch coil wire harness connector. If OK, go
to Step 4. If not OK, repair the open circuit as
required.
(4) The relay coil battery terminal (86) is con-
nected to the fused ignition switch output (run/start)
circuit. There should be battery voltage at the cavity
for relay terminal 86 with the ignition switch in the
On position. If OK, go to Step 5. If not OK, repair the
open circuit to the fuse in the junction block as
required.
(5) The coil ground terminal cavity (85) is switched
to ground through the Powertrain Control Module
(PCM). There should be continuity between this cav-
ity and the A/C compressor clutch relay control cir-
cuit cavity of the PCM wire harness connector C
(gray) at all times. If not OK, repair the open circuit
as required.

REMOVAL

(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cover from the Power Distribution
Center (PDC) (Fig. 13).
Fig. 13 POWER DISTRIBUTION CENTER LOCATION
1 - CLIP
2 - BATTERY
3 - TRAY
4 - NEGATIVE CABLE
5 - POSITIVE CABLE
6 - CLIP
7 - FENDER INNER SHIELD
8 - POWER DISTRIBUTION CENTER
(3) Refer to the label on the PDC for compressor
clutch relay identification and location.
(4) Unplug the compressor clutch relay from the
PDC.

INSTALLATION

(1) Install the compressor clutch relay by aligning
the relay terminals with the cavities in the PDC and
pushing the relay firmly into place.
(2) Install the PDC cover.
(3) Connect the battery negative cable.
(4) Test the relay operation.

A/C HEATER CONTROL

DESCRIPTION

The a/c heater control is a completely electronic
control head (Fig. 14). The a/c heater system uses all
electrical controls. These controls provide the vehicle
operator with a number of setting options to help
control the climate and comfort within the vehicle.
Refer to the owner's manual in the vehicle glove box
for more information on the features, use, and sug-
gested operation of these controls.
Fig. 14 A/C HEATER CONTROL
1 - BLOWER SPEED CONTROL KNOB
2 - TEMPERATURE CONTROL KNOB
3 - MODE CONTROL KNOB
4 - A/C SELECT BUTTON
5 - REAR WINDOW DEFOGGER/HEATED MIRROR SELECT
BUTTON (optional)

OPERATION

The a/c heater control is located to the right of the
instrument cluster on the instrument panel. The a/c
heater control contains a rotary-type temperature
control knob, a rotary-type mode control knob, a rota-
ry-type blower motor speed knob, and push buttons
for a/c compressor and rear window defogger/heated
mirror operation (Fig. 14).
The a/c heater control is fully electronic, contains
the logic and control circuits for the HVAC system,
and is on the J1850 data bus.
The a/c heater control cannot be repaired. If faulty
or damaged, the entire unit must be replaced. The
CONTROLS 24 - 15