1993 CHEVROLET DYNASTY Service Manual

fuse box diagram fuses adblue reset air suspension fuse air condition

Page 721 of 2438

CHEVROLET DYNASTY 1993 Service Manual (3) Use an ohmmeter to test the wiring between
the door switch and the control module in the driv-
ers seat. The circuits should be disconnected from
their components at each end. Repair the wiring

(3) Use an ohmmeter to test the wiring between
the door switch and the control module in the driv-
er's seat. The circuits should be disconnected from
their components at each end. Repair the wiring as
required for open circuits, terminal push outs, or bad
crimps. If the circuits are good to the control module
but the function is still missing, replace the control
module.
CONDITION: NO MOVEMENT OF THE SEAT, RELAYS CAN BE HEARD CLICKING WHENTHE SEAT SWITCH IS ACTIVATED.
PROCEDURE
(1) Check for battery voltage and ground at the ap-
propriate pins of the control module 10-way connec-
tor (Fig. 23). If the proper results are not obtained,
replace the control module. If the circuits are correct,
then continue the procedure.
(2) Check for continuity of the motor circuits from
the control module 10-way connector to the left
power seat motor package (Fig. 24). (3) Repair the wiring as required for open circuits,
terminal push outs, or bad crimps. If the circuits are
good but the seat movement direction is still missing,
replace the seat motor package assembly. After re-
placement of the seat motor package, reconnect all wiring connectors and reinstall seat assembly in ve-
hicle. Operate the switches manually to cause maxi-
mum seat movement in all directions. Perform the
memory seat diagnostic self check so the control
module will learn the new soft limits of the assem-
bly.
CONDITION: NO MOVEMENT OF THE MEMORY MIRRORS WHEN THE POWERMIRROR SWITCH IS ACTUATED, MEMORYMIRRORS MOVE DURING RECALL ONLY.
PROCEDURE
(1) Check for battery voltage at pin 1 of the mem-
ory mirror switch 8-way connector in the driver's
door. This battery feed is through a diode package
that is located in the left cowl side area. A grounded
wire on the switch side of the diode would most
likely cause the diode package to open. Solder and
tape the connections if replacement is necessary. The
fuse is in cavity 13 of the fuse block. (2) Check for ground at pin 5 of the memory mir-
ror switch 8-way connector. Repair as needed. (3) Check for continuity of the memory mirror
switch. Refer to the Group 8T, Mirror Switch Test
Procedure and the Continuity.
Fig. 23 Control Module 10-Way Connector Voltage and Ground Test
Fig. 24 Control Module 10-Way Connector to PowerSeat Motor Connector Continuity
Ä POWER SEATS 8R - 15

Page 722 of 2438

CHEVROLET DYNASTY 1993 Service Manual CONDITION: NO MOVEMENT OF BOTH MEMORY MIRRORS OR ONLY ONE MEMORY MIRROR DURING THE RECALL MODE,MEMORY MIRRORS WILL MOVE ONLY WHENTHE POWER MIRROR SWITCH IS ACTUATED.MEMORY SEAT AND RECLINER MOVE INREC

CONDITION: NO MOVEMENT OF BOTH MEMORY MIRRORS OR ONLY ONE MEMORY MIRROR DURING THE RECALL MODE,MEMORY MIRRORS WILL MOVE ONLY WHENTHE POWER MIRROR SWITCH IS ACTUATED.MEMORY SEAT AND RECLINER MOVE INRECALL.
PROCEDURE
(1) Determine the fault precisely. If all memory
mirror recall movements appear to be missing, first
set the mirrors to two different vertical and horizon-
tal positions for both mirrors. Refer to the General
Information paragraph at the beginning of this sec-
tion for position setting instructions. Try to recall
these set positions that were just placed in memory. (2) Observe for no movement in a specific direction
for a specific mirror. If there is still no movement of
either mirror in any direction, re place the control
module. Perform the memory seat diagnostic self
check so the control module will learn the new soft
limits of the assembly. If the non-movement is in a
specific direction or a specific mirror, continue with
the procedure. (3) Perform the diagnostic self tests, mirror check
mode, to determine if the fault is with a motor or
with a position sensing rheostat circuit. Refer to
Memory Seat and Mirror Diagnostic Self-Tests expla-
nation for further information and understanding of
the diagnostic process and identifying of the fault. If
the fault is with a motor, continue this procedure as
follows in step (4) below. If the fault is with a rheo-
stat, as indicated by the mirror nod in the vertical or
horizontal plane, continue the procedure with step (5)
of this procedure that follows. (4) Check for continuity of the motor drive circuits
between the control module 25-way connector and
the mirror 8-way connector (Fig. 25 and 26). Repair open wiring, terminal push outs or bad
crimps as necessary to correct the fault. If there is
still no recall movement of an individual mirror after
ensuring continuity of the motor drive circuits, then
replace the control module. Perform the memory seat
diagnostic self check so the control module will learn
the new soft limits of the assembly. (5) Check for continuity of the position sensing
rheostat circuits at the disconnected 25-way connec-
tor under the driver's seat. Connect an ohmmeter be-
tween the cavities of the 25-way connector as
indicated in the charts for the left or right mirrors as
required (Fig. 27). If the resistance values cannot be
obtained, i.e., an open circuit, continue the proce-
dure. (6) Check for continuity of the position sensing
rheostat circuits between the control module 25-way
connector and the mirror 8-way connector for the left
or right mirrors as required (Fig. 28). Repair the
open wiring, terminal push outs or bad crimps as necessary to correct the fault. If continuity exists in
these circuits, then continue this procedure.
Fig. 25 Control Module 25-Way Connector to Mirror 8-Way Connector Continuity
Fig. 26 Mirror 8-Way Connector and 25-Way Control Module Connector
8R - 16 POWER SEATS Ä

Page 723 of 2438

CHEVROLET DYNASTY 1993 Service Manual (7) Check for resistance values in the left or right
mirror assembly as indicated by the diagnostic self
test fault locator. Connect an ohmmeter between the
mirror 8-way connector cavities as shown i

Page 724 of 2438

CHEVROLET DYNASTY 1993 Service Manual (9) Remove recliner motor and cable assembly.
INSTALLATION
(1) Position recliner motor and cable assembly to
seat track. Check that the cable is equipped with a
cable housing clip and clamp. (2) Conn

(9) Remove recliner motor and cable assembly.
INSTALLATION
(1) Position recliner motor and cable assembly to
seat track. Check that the cable is equipped with a
cable housing clip and clamp. (2) Connect wiring connectors.
(3) Install power recliner motor to power seat track
front cross strap with two attaching screws (Fig. 30). (4) Align power seat track with the cushion frame.
The power recliner cable housing must be routed to-
ward the recliner through the gap between the cush-
ion frame and the power seat track side strap. (5) Install the power seat track to the cushion
frame. (6) Install the square drive cable end into the
square hole in the drive worm gear at transmission.
The cable may have to be rotated manually in order
to align properly with the square hole in the drive
worm gear. (7) Position cable housing so that it is properly
seated into the transmission housing. (8) Clamp the cable housing to the transmission
housing with the clamp. The prongs of the clamp
should be pointing towards the floor of the vehicle. (9) Install cable housing clip into the hole located
in the cushion frame. (10) Install the seat outboard side shield. (11) Install the seat assembly into the vehicle fol-
lowing the procedure outlined under Seat Assembly
Installation.
POWER RECLINER MECHANISM
REMOVAL
(1) Remove seat outboard side shields (Fig. 30).
(2) Remove four recliner attaching screws. Some
vehicles require the trim to be lifted in order to ex-
pose recliner screws at the seat back attachment. (3) Disconnect cable housing clamp at transmis-
sion. (4) Remove cable from transmission drive worm
gear. Be careful not to allow the cable to be pulled
out of the housing. This will prevent possibility of
disconnecting the cable from the motor at the other
end.
INSTALLATION
(1) Install the square drive cable end into the
square hole in the drive worm gear at recliner mech-
anism. The cable may have to be rotated manually in
order to align properly with the square hole in the
drive worm gear. (2) Position the cable housing so that it is securely
seated into the transmission housing. (3) Clamp the cable housing to the transmission
housing with clamp. The prongs of the clamp should
Fig. 30 Power Memory Seat
8R - 18 POWER SEATS Ä

Page 725 of 2438

CHEVROLET DYNASTY 1993 Service Manual be pointing towards the floor of the vehicle. (4) Install the four recliner to seat frame fasteners
(Fig. 30). (5) Install seat outboard side shields and fix all
trim so that no foam is exposed. (6) S

Page 726 of 2438

Page 727 of 2438

CHEVROLET DYNASTY 1993 Service Manual POWER WINDOWS
CONTENTS
page page
BENCH REPAIR OF REGULATOR AND MOTOR CONVENTIONAL REGULATORS .......... 5
GEAR AND PINION REPLACEMENT AND LUBRICATION ....................... 3
GENERAL INFORMATION

POWER WINDOWS
CONTENTS
page page
BENCH REPAIR OF REGULATOR AND MOTOR CONVENTIONAL REGULATORS .......... 5
GEAR AND PINION REPLACEMENT AND LUBRICATION ....................... 3
GENERAL INFORMATION .................. 1
MOTOR REPLACEMENT ................... 7
MOTOR REPLACEMENT CONVENTIONAL REGULATORS ....................... 3
MOTOR REPLACEMENTÐFLEX DRIVE REGULATORS ......................... 5 POWER WINDOW CABLE HOUSING/MOTOR RE-
PLACEMENTÐAC and AY BODIES ........ 7
QUARTER WINDOW MOTOR REPLACEMENTÐ AJ BODY ............................. 9
QUARTER WINDOW REPLACEMENTÐ AJ BODY ............................. 8
WINDOW LIFT MOTOR TEST .............. 1
WINDOW LIFT SWITCH TEST .............. 1
WIRING VOLTAGE TEST .................. 1
GENERAL INFORMATION
Front and rear door window lift motors are of the
permanent magnet type. A positive and negative bat-
tery connection to either of the two motor terminals
will cause the motor to rotate in one direction. Re-
versing current through these same two connections
will cause the motor to rotate in the opposite direc-
tion. Each individual motor is grounded through the
master switch by a black wire attached to the left
cowl panel. It is necessary that the window be free to slide up
and down in the glass channels or tubes and tracks.
If the window is not free to move up and down, the
window lift motor will not be able to move the glass. To determine if the glass is free is to disconnect the
regulator from the glass lift plate, and slide the win-
dow up and down by hand. For conventional arm-sec-
tor regulators, after the lift plate is detached from
the glass, it will slide off the regulator drive arm.
Flex-drive regulators may be detached the same way
or by removing one screw holding the flex rack to the
lift plate drive arm.
WIRING VOLTAGE TEST
The following wiring test determines whether or
not voltage is continuous through the body harness
to switch. After removing switch for testing purposes, care-
fully separate multiple terminal block on wiring har-
ness from switch body. With ignition switch ON
connect one lead of test light to black (or gray) wire
terminal and touch other test light lead to tan wire
terminal. If the test light comes on, the wiring cir-
cuit between the battery and switch is functional. If
light does not come on, check 30 amp main fuse (cir- cuit breaker) or for a broken wire. For wiring, spe-
cific connector type and location, refer to Group 8W,
Wiring Diagrams.
WINDOW LIFT SWITCH TEST
For switch testing, remove the switch from its
mounting. Using an ohmmeter, refer to Window
Switch Continuity Charts to determine if continuity
is correct. If the results are not obtained, replace the
switch. AC and AY Bodies are equipped with an Auto-
Down feature. This feature allows the operator to
lower the driver's window without having to hold the
switch in the down position. The Auto-Down feature
can be activated by pressing the down switch past
the first detent (Stop). To test the auto-down feature, operate the window
in the normal up and down mode. If the window
works correctly in the normal mode, but not in the
auto-down mode, replace the switch. To test the window switch (other than Auto-Down
mode), install a known good switch.
WINDOW LIFT MOTOR TEST
(1) Connect positive (+) lead from a test battery to
either of the two motor terminals. (2) Connect negative (-) lead from test battery to
remaining motor terminal. (3) The motor should now rotate in one direction to
either move window up or down. (a) If window happens to already be in full UP
position and motor is connected so as to rotate in
UP direction no movement will be observed. (b) Likewise, motor connected to DOWN direc-
tion rotation, no movement will be observed if win-
dow is already in full DOWN position.
Ä POWER WINDOWS 8S - 1

Page 728 of 2438

CHEVROLET DYNASTY 1993 Service Manual WINDOW SWITCH CONTINUITY
8S - 2 POWER WINDOWS Ä

Load next 8 pages

Page: < prev 1-10 ... 689-696 697-704 705-712 713-720 721-728 729-736 737-744 745-752 753-760 ... 2440 next >

USB port battery capacity steering wheel adjustment power steering fluid radiator check engine