Dodge dakota 2002 Service Manual page 2782

DR
HEATING & AIR CONDITIONING (Continued)
STANDARD PROCEDURE - DIODE
REPLACEMENT
(1) Disconnect the battery negative cable and iso-
late it. If vehicle has a dual batterys remove both
negative cables.
(2) Locate the diode in the harness, and remove
the protective covering.
(3) Remove the diode from the harness, pay atten-
tion to the current flow direction (Fig. 2).
Fig. 2 DIODE IDENTIFICATION
1 - CURRENT FLOW
2 - BAND AROUND DIODE INDICATES CURRENT FLOW
3 - DIODE AS SHOWN IN THE DIAGRAMS
(4) Remove the insulation from the wires in the
harness. Only remove enough insulation to solder in
the new diode.
(5) Install the new diode in the harness, making
sure current flow is correct. If necessary refer to the
appropriate wiring diagram for current flow.
(6) Solder the connections together using rosin
core type solder only. Do not use acid core solder.
(7) Tape the diode to the harness using electrical
tape making, sure the diode is completely sealed
from the elements.
(8) Re-connect the battery negative cable(s), and
test affected systems.
HEATING & AIR CONDITIONING
SPECIFICATIONS
A/C APPLICATION TABLE
Item Description
Vehicle DR- Ram Truck
System R134a w/ fixed
orifice tube
Compressor Saden SD-7
Freeze–up A/C Fin Sensor
Control
High psi Control 475 psi A/C cut
out
Control Head electronic
Mode Door electric
Blend Door electric
Recirculation electric
Door
Blower Motor hardwired to
control head
Cooling Fan Viscous for
cooling with a
single speed
electric for A/C
for 3.7, 4.7 and
5.7L gas
engines.
Viscous for
both cooling
and A/C with
5.9L diesel
engine and
8.0L gas
engine.
Clutch Electro-
mechanical
Control relay
Draw 2 - 3.7 amps @
12V
Gap 0.016 - 0.031
DRB III
Reads TPS, RPM, A/C
switch test
Actuators clutch and fan
relay
24 - 7
Notes
SP-15 PAG oil
Evaporator
mounted
discharge line
Software -
J2190
resistor block
PCM
± 0.5V @ 70° F