Dodge Neon 2001, Руководство по обслуживанию

Страница: 694 / 743

(3) Remove shifter bezel (Fig. 284).
(4) Adjust interlock cable/system as follow-
s:Pry up on cable adjuster lock to release and allow
cable to “self-adjust”. Lock cable adjustment by press-
ing down on the adjuster lock until bottomed at the
cable housing.
(5) Verify correct system operation. Refer to verifi-
cation procedure.
(6) Install shifter bezel (Fig. 284).
(7) Install center console assembly (Fig. 283).
(8) Install gearshift knob and tighten set screw to
2 N·m (15 in. lbs.) torque (Fig. 282).
SOLENOID/PRESSURE
SWITCH ASSY
DESCRIPTION
The Solenoid/Pressure Switch Assembly (Fig.
285)is external to the transaxle and mounted to the
transaxle case. The assembly consists of four sole-
noids that control hydraulic pressure to the LR/CC,
2/4, OD, and UD friction elements. The reverse
clutch is controlled by line pressure from the manual
valve in the valve body. The solenoids are contained
within the Solenoid/Pressure Switch Assembly, and
can only be serviced by replacing the assembly.
The solenoid assembly also contains pressure
switches that monitor and send hydraulic circuit
information to the TCM. Likewise, the pressure
switches can only be service by replacing the assem-
bly.
OPERATION
SOLENOIDS
The solenoids receive electrical power from the
Transmission Control Relay through a single wire.
The TCM energizes or operates the solenoids individ-
ually by grounding the return wire of the solenoid
needed. When a solenoid is energized, the solenoid
valve shifts, and a fluid passage is opened or closed
(vented or applied), depending on its default operat-
ing state. The result is an apply or release of a fric-
tional element.
The 2/4 and UD solenoids are normally applied,
which by design allow fluid to pass through in their
relaxed or “off” state. This allows transaxle limp-in
(P,R,N,2) in the event of an electrical failure.
The continuity of the solenoids and circuits are
periodically tested. Each solenoid is turned on or off
depending on its current state. An inductive spike
should be detected by the TCM during this test. It no
spike is detected, the circuit is tested again to verify
the failure. In addition to the periodic testing, the
solenoid circuits are tested if a speed ratio or pres-
sure switch error occurs.
PRESSURE SWITCHES
The TCM relies on three pressure switches to mon-
itor fluid pressure in the L/R, 2/4, and OD hydraulic
circuits. The primary purpose of these switches is to
help the TCM detect when clutch circuit hydraulic
failures occur. The range for the pressure switch clos-
Fig. 284 Shifter Bezel Removal/Installation
1 - BEZEL
2 - SCREW (4)
Fig. 285 Solenoid/Pressure Switch Assembly
1 - SOLENOID AND PRESSURE SWITCH ASSEMBLY
PL
41TE AUTOMATIC TRANSAXLE 21s - 179
SHIFT INTERLOCK SYSTEM (Continued)
ProCarManuals.com
2001 NEON