Dodge Dakota 2001, Руководство по обслуживанию, Страница: 496 / 2307

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)