Dodge Dakota (R1). Manual — part 340
ENTRY TRANSMITTER - DIAGNOSIS AND TEST-
ING).
• If the entire power lock system functions with
the RKE transmitter, and both door cylinder lock
switches, but not with one or both of the power lock
switches, proceed to diagnosis of the Driver Door
Module (DDM) for the driver side switch or to power
lock switch for the passenger side switch. (Refer to 8
-
ELECTRICAL/POWER
LOCKS/DRIVER
DOOR
MODULE - DIAGNOSIS AND TESTING) and/or
(Refer to 8 - ELECTRICAL/POWER LOCKS/POWER
LOCK SWITCH - DIAGNOSIS AND TESTING).
• If the entire power lock system functions with
the RKE transmitter, and both power lock switches,
but not with one or all of the door cylinder lock
switches, proceed to diagnosis of the door cylinder
lock switches. (Refer to 8 - ELECTRICAL/POWER
LOCKS/DOOR CYLINDER LOCK SWITCH - DIAG-
NOSIS AND TESTING).
• If one power lock motor fails to operate with
both of the power lock switches, all of the door cylin-
der lock switches, and/or the RKE transmitter, pro-
ceed to diagnosis of the power lock motor. (Refer to 8
-
ELECTRICAL/POWER
LOCKS/POWER
LOCK
MOTOR - DIAGNOSIS AND TESTING).
If the problem being diagnosed is related to one or
more of the electronic features (automatic locks,
driver door unlock only, door lock inhibit, enhanced
accident response, illuminated entry, panic mode,
RKE horn chirp, or RKE optical chirp), further diag-
nosis should be performed using a DRBIII
t scan tool.
Refer to the appropriate diagnostic information.
DOOR CYLINDER LOCK
SWITCH
DESCRIPTION
A door cylinder lock switch is snapped onto the
back of the key lock cylinder inside each front door.
The door cylinder lock switch is a resistor multi-
plexed momentary switch that is hard wired in series
between a body ground and the Central Timer Mod-
ule (CTM) through the front door wire harness. The
door cylinder lock switches are driven by the key lock
cylinders and contain three internal resistors. One
resistor is used for the neutral switch position, one
for the Lock position, and one for the Unlock posi-
tion.
The door cylinder lock switches cannot be adjusted
or repaired and, if faulty or damaged, they must be
replaced.
OPERATION
The door cylinder lock switches are actuated by the
key lock cylinder when the key is inserted in the lock
cylinder and turned to the lock or unlock positions.
The door cylinder lock switch closes a path to ground
through one of three internal resistors for the Cen-
tral Timer Module (CTM) when the front door key
lock cylinder is in the Lock, Unlock, or Neutral posi-
tions. The CTM reads the switch status through an
internal pull-up, then uses this information as an
input for both power lock system and Vehicle Theft
Security System (VTSS) operation.
The door cylinder lock switches and circuits can be
diagnosed using conventional diagnostic tools and
methods.
DIAGNOSIS AND TESTING - DOOR CYLINDER
LOCK SWITCH
Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, details of wire
harness routing and retention, connector pin-out
information and location views for the various wire
harness connectors, splices and grounds.
(1) Disconnect the door cylinder lock switch pigtail
wire connector from the door wire harness connector.
(2) Using an ohmmeter, perform the switch resis-
tance checks between the two cavities of the door cyl-
inder lock switch pigtail wire connector. Actuate the
switch by rotating the key in the door lock cylinder
to test for the proper resistance values in each of the
three switch positions, as shown in the Door Cylinder
Lock Switch chart.
DOOR CYLINDER LOCK SWITCH
Switch Position
Resistance
Driver Side
Passenger Side
Neutral
Neutral
12 Kilohms
Lock (Clockwise)
Lock (Counter
Clockwise)
644 Ohms
Unlock (Counter
Clockwise)
Unlock
(Clockwise)
1565 Ohms
(3) If a door cylinder lock switch fails any of the
resistance
tests,
replace
the
faulty
switch
as
required.
AN
POWER LOCKS
8N - 5
POWER LOCKS (Continued)
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the door outside latch handle mount-
ing hardware and linkage from the inside of the door.
(Refer to 23 - BODY/DOOR - FRONT/EXTERIOR
HANDLE - REMOVAL).
(3) From the outside of the door, pull the door out-
side latch handle out from the door far enough to
access the door cylinder lock switch (Fig. 1).
(4) Disengage the door cylinder lock switch from
the back of the lock cylinder.
(5) Disconnect the door cylinder lock switch pigtail
wire connector from the door wire harness connector.
(6) Disengage the retainers that secure the door
cylinder lock switch pigtail wire harness to the inner
door panel.
(7) Remove the door cylinder lock switch from the
door.
INSTALLATION
(1) Position the door cylinder lock switch into the
door (Fig. 1).
(2) Engage the retainers that secure the door cyl-
inder lock switch pigtail wire harness to the inner
door panel.
(3) Reconnect the door cylinder lock switch pigtail
wire connector to the door wire harness connector.
(4) Reinstall the door cylinder lock switch onto the
back of the lock cylinder.
(5) Reinstall the door outside latch handle mount-
ing hardware and linkage on the inside of the door.
(Refer to 23 - BODY/DOOR - FRONT/EXTERIOR
HANDLE - INSTALLATION).
(6) Reconnect the battery negative cable.
DRIVER DOOR MODULE
DESCRIPTION
A Driver Door Module (DDM) is used on all models
equipped with power locks, power windows, and
power mirrors. The driver door module consists of a
molded plastic housing that is secured with three
screws to a molded plastic switch bezel. The switch
bezel is secured by metal snap clips within an open-
ing near the forward end of the arm rest in the
driver side front door trim panel so that the DDM
can be serviced without removing the front door trim
panel. Two integral connector receptacles on the back
of the DDM connect it to the vehicle electrical system
through two take outs and connectors of the left front
door wire harness. The DDM houses the following
switches:
• Power Lock Switch - The DDM includes a
two-way, momentary, resistor multiplexed switch to
control the power lock system.
• Power Mirror Selector Switch - A three-posi-
tion rocker switch in the DDM selects the right or
left power mirror for adjustment, or turns the power
mirror system Off.
• Power Mirror Adjustment Switches - Four
momentary, arrowhead shaped, directional switches
allow the driver to adjust the selected power mirror
in the Up, Down, Right, or Left directions.
• Power Window Lockout Switch - A two-way,
latching, push-button switch in the DDM allows the
vehicle operator to lock out the power window
switches on each passenger door so that the passen-
ger door power windows may be operated only from
the master switches in the DDM.
• Power Window Switches - The DDM houses a
two-way, momentary power window switch for the
driver side front door. This switch also has a second
detent in the Down direction and internal circuitry to
provide an Auto-Down feature for the driver side
front door power window. In addition to the power
window switch for its own door, the DDM houses
individual master switches for each passenger door
power window.
The DDM also incorporates several green Light-
Emitting Diodes (LEDs) that illuminate the power
Fig. 1 Door Cylinder Lock Switch - Typical
1 - DOOR OUTSIDE LATCH HANDLE
2 - DOOR
3 - DOOR CYLINDER LOCK SWITCH
4 - CONNECTOR
5 - RETAINERS
8N - 6
POWER LOCKS
AN
DOOR CYLINDER LOCK SWITCH (Continued)
lock and power window switch paddles, and the
power mirror switch directional buttons to improve
switch visibility in dark ambient lighting conditions.
The DDM cannot be adjusted or repaired and, if
faulty or damaged, the entire DDM unit must be
replaced.
OPERATION
The Driver Door Module (DDM) combines a power
lock switch, a driver power window switch with an
Auto-down feature, master switches for each passen-
ger door power window, a power window lockout
switch, a power mirror selector switch, and four
power mirror adjustment switches in a single unit.
The switches in the DDM can be diagnosed using
conventional diagnostic tools and methods.
Power Lock Switch
The DDM power lock switch circuitry is connected
in series between ground and the driver door switch
mux input of the Central Timer Module (CTM). Each
power lock switch position (Lock, Unlock, and Neu-
tral) provides a different resistance value to the CTM
input, which allows the CTM to sense the switch
position. Based upon the power lock switch input, the
CTM controls the battery and ground feed outputs to
the individual power lock motors to lock or unlock
the door and liftgate latches. The Light-Emitting
Diode (LED) in the DDM power lock switch is con-
nected to battery current through the power window
circuit breaker in the Junction Block (JB) on a fused
ignition switch output (run-acc) circuit so that the
switch will be illuminated whenever the ignition
switch is in the On or Accessory positions.
Power Window Switches
The DDM power window switch circuitry is con-
nected to battery current through a circuit breaker in
the Junction Block (JB) on a fused ignition switch
output (run-acc) circuit so that the power windows
will operate whenever the ignition switch is in the
On or Accessory positions. Each two-way, momentary
master passenger power window switch in the DDM
provides battery current and ground to the individual
power window switches on each passenger door so
that the power window switch controls the battery
current and ground feeds to its respective power win-
dow motor. The DDM switch for the driver side front
door power window is labeled with the text “Auto”
and includes an auto-down feature. When this switch
is depressed to a second momentary detent position
and released, the driver door power window is auto-
matically operated through an internal circuit and
relay to its fully lowered position. The Auto-down
event is cancelled if the switch paddle is depressed a
second time in either the Up or Down direction.
When the two position window lockout switch in the
DDM is depressed and latched in the lockout posi-
tion, the battery current feed to each of the individ-
ual passenger power window switches is interrupted
so that the passenger door power windows can only
be operated from the master switches in the DDM.
The window lockout switch also controls the battery
current feed for the LED in each passenger power
window switch so that the switch will not be illumi-
nated when it is locked out.
Power Mirror Switches
The DDM power mirror switch circuitry is con-
nected to battery current through a fuse in the JB on
a fused B(+) circuit so that the power mirrors remain
operational regardless of the ignition switch position.
A rocker type selector switch has three positions, one
to select the right mirror, one to select the left mir-
ror, and a neutral Off position. After the right or left
mirror is selected, one of four directional buttons is
depressed to move the selected mirror Up, Down,
Right or Left. The DDM power mirror switch cir-
cuitry controls the battery current and ground feeds
to each of the four (two in each mirror head) power
mirror motors. The Light-Emitting Diode (LED) in
the DDM power mirror switch is connected to battery
current through the power window circuit breaker in
the Junction Block (JB) on a fused ignition switch
output (run-acc) circuit so that the switch directional
buttons will be illuminated whenever the ignition
switch is in the On or Accessory positions.
DIAGNOSIS AND TESTING - DRIVER DOOR
MODULE
The
Light-Emitting
Diode
(LED)
illumination
lamps for all of the Driver Door Module (DDM)
power
window,
power
lock,
and
power
mirror
switches receive battery current through the power
window circuit breaker in the Junction Block (JB). If
all of the LEDs are inoperative in the DDM, be cer-
tain to diagnose the power window system before
replacing the switch unit. (Refer to 8 - ELECTRI-
CAL/POWER WINDOWS - DIAGNOSIS AND TEST-
ING). If only one LED in the DDM is inoperative,
replace the faulty DDM. If the driver side front door
power window operates in a normal manner, but the
Auto-Down feature is inoperative, replace the faulty
DDM. Refer to the appropriate wiring information.
The wiring information includes wiring diagrams,
proper wire and connector repair procedures, details
of wire harness routing and retention, connector pin-
out information and location views for the various
wire harness connectors, splices and grounds.
(1) Disconnect and isolate the battery negative
cable. Remove the DDM from the door trim panel.
AN
POWER LOCKS
8N - 7
DRIVER DOOR MODULE (Continued)
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