Chrysler Concorde 1993 Service Manual page 316

8H - 6 SPEED CONTROL SYSTEM
Fig. 7 Servo Harness Connector
(3) Perform the following tests.
(a) Disconnect the six-way connector at the stop
lamp switch and test pin 1 for battery voltage. If
voltage is OK, perform the stop lamp switch test.
(b) If the stop lamp switch tests OK, repair wire
between the servo and the stop lamp switch.
(c) If no voltage at pin 1 of the six-way stop lamp
connector, remove the ON/OFF speed control
switch on the steering wheel. Disconnect the two-
way connector and test pin 1 for battery voltage.
(d) If voltage is OK, perform the speed control
switch test.
(e) If speed control switch is OK, test continuity
across the clockspring.
(f) If clockspring is OK, repair as wire between
stop lamp switch and clockspring as necessary.
(g) Repeat steps (c) through (f) for the SET/RE-
SUME switch.
(h) If no voltage at pin 1 of either of the switch
connectors test for battery voltage between the ig-
nition switch and fuse.
(i) If voltage is OK, check fuse.
(j) If fuse is OK, repair wire between fuse and
clockspring.
(4) Connect a jumper wire between pin 2 of the
four-way servo connector of the main harness and
pin 2 of the servo (Fig. 7). The other three pins from
the servo should have battery voltage. If not, replace
servo.
(5) Using an ohmmeter, connect one lead to ground
and the other lead to pin 1 of the four-way servo con-
nector of the main harness. There should be continu-
ity, if not, repair the ground circuit as necessary.
ELECTRICAL TESTS AT POWERTRAIN CONTROL
MODULE
(1) Unplug 60-way connector from the powertrain
control module, located under the air cleaner (Fig. 8
and 9).
Fig. 8 Powertrain Control Module Location
Fig. 9 60-Way Connector
(2) Remove both steering wheel speed control
switches and disconnect the two-way connectors.
(a) Using an ohmmeter, check for continuity be-
tween pin 23 of the powertrain control module and
pin 1 of each switch connector.
(b) If no continuity, repair as necessary.
(c) If continuity, perform the Switch Test.
(3) Place ignition switch in the ON position for the
following tests.
(a) Connect wire connectors to both switches.
(b) Using an voltmeter, connect the ground lead
to ground.
(c) Touch the positive lead of the voltmeter to
pin 53. Depress the OFF switch, the voltmeter
should read zero volts. Depress ON switch, the
voltmeter should read battery voltage. If no volt-