Dodge 2000 DURANGO Service Manual page 763

DN
DIAGNOSIS AND TESTING (Continued)
(5) Connect one end of a jumper wire (16 gauge or
smaller) to relay terminal 85. Connect the other end
of the jumper wire to the ground side of a 12 volt
power source.
(6) Connect one end of another jumper wire (16
gauge or smaller) to the power side of the 12 volt
power source. Do not attach the other end of the
jumper wire to the relay at this time.
WARNING: DO NOT ALLOW OHMMETER TO CON-
TACT TERMINALS 85 OR 86 DURING THIS TEST.
(7) Attach the other end of the jumper wire to
relay terminal 86. This activates the relay. The ohm-
meter should now show continuity between relay ter-
minals 87 and 30. The ohmmeter should not show
continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continu-
ity and resistance tests. If the relay passed the tests,
it operates properly. Check the remainder of the ASD
and fuel pump relay circuits. Refer to group 8W, Wir-
ing Diagrams.
THROTTLE BODY MINIMUM AIR FLOW CHECK
PROCEDURE
3.9/5.2/5.9L ENGINES
The following test procedure has been developed to
check throttle body calibrations for correct idle condi-
tions. The procedure should be used to diagnose the
throttle body for conditions that may cause idle prob-
lems. This procedure should be used only after
normal diagnostic procedures have failed to
produce results that indicate a throttle body
related problem. Be sure to check for proper
operation of the idle air control motor before
performing this test.
A special fixed orifice tool (number 6714) (Fig. 14)
must be used for the following test.
Fig. 14 Fixed Orifice Tool
(1) Start the engine and bring to operating tem-
perature. Be sure all accessories are off before per-
forming this test.
(2) Shut off the engine and remove the air duct at
throttle body.
(3) Disconnect the vacuum line at the PCV valve
(Fig. 15).
Fig. 15 Install Orifice Tool
1 – PCV VALVE
2 – VACUUM LINE
3 – ORIFICE TOOL
(4) Install the 0.185 inch orifice tool (number 6714)
into the disconnected vacuum line in place of the
PCV valve (Fig. 15).
FUEL SYSTEM 14 - 43