Chrysler PT Cruiser. Manual - part 512

When the switch is held in the top up position and

all four windows are fully up, the modules will lower
the respective front window 40mm, lower the respec-
tive rear window for 0.52 seconds (approx. 55mm)
and the driver window regulator module will ground
the top up relay control circuit. Once the top is back
up the windows will not raise automatically. When
the top switch is pressed in either position, the driver
window regulator module will ground the respective
relay control circuit for a maximum of 30 seconds.
The window regulator module monitors vehicle speed
and if the speed is over 15 mph. the top will not
operate. (Refer to 8 - ELECTRICAL/POWER WIN-
DOWS/WINDOW

REGULATOR

MODULE

DESCRIPTION) for additional information on the
window regulator module.

DIAGNOSIS AND TESTING

POWER TOP - CONVERTIBLE

Any diagnosis of the power top system should

begin with the use of a scan tool and the proper
Diagnostic Procedures Information. The scan tool can
provide confirmation that the Programmable Com-
munications Interface (PCI) data bus is functional,
that all of the electronic modules are sending and
receiving the proper messages on the PCI data bus,
and that the power top motor is being sent the
proper hard wired output by the driver window reg-
ulator module.

Refer to the appropriate diagnostic informa-

tion.

MOTOR/HYDRAULIC PUMP
ASSEMBLY

DIAGNOSIS AND TESTING

MOTOR/HYDRAULIC PUMP ASSEMBLY

Any diagnosis of the power top system should

If the power top is completely inoperative and the

motor/hydraulic pump assembly is suspect, perform
the following:

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the rear seat back, (Refer to 23 -

BODY/SEATS/SEAT BACK - REMOVAL).

(3) Remove the well liner/carpet from the power

top well.

(4) Remove the foam pump cover from over the

motor/hydraulic pump.

(5) Disconnect the motor/hydraulic pump wire har-

ness connector (Fig. 2).

(6) Reconnect the battery negative cable.
(7) Insert a 12V test light between the two connec-

tor terminals of the motor/hydraulic pump wire har-
ness connector.

(8) With the ignition in the “RUN” position, oper-

ate the power top in both directions while observing
the test light. The light should illuminate in both
directions. If OK, replace the inoperative motor/hy-
draulic pump assembly, (Refer to 8 - ELECTRICAL/
POWER TOP/MOTOR - REMOVAL). If not OK, use a
scan tool and the proper Diagnostic Procedures Infor-
mation to complete diagnosis of the power top sys-
tem.

Fig. 2 MOTOR/HYDRAULIC PUMP ASSEMBLY

1 - MOTOR/HYDRAULIC PUMP CONNECTOR
2 - MOTOR/HYDRAULIC PUMP RELAY
3 - MOTOR/HYDRAULIC PUMP RELAY CONNECTOR

8N - 18

POWER TOP - CONVERTIBLE - PT27

POWER TOP - CONVERTIBLE - PT27 (Continued)

RELAY - POWER TOP

REMOVAL

(1) Start with the folding top in the raised and

latched position.

(2) Disconnect and isolate the battery negative

cable.

(3) Remove the rear seat back, (Refer to 23 -

BODY/SEATS/SEAT BACK - REMOVAL).

(4) Remove the well liner/carpet from the power

top well.

(5) Remove the foam pump cover from over the

motor/hydraulic pump.

(6) Disconnect the motor/hydraulic pump relay

wire harness connector (Fig. 3).

(7) Depress the relay retaining tab and remove the

relay from the bracket.

INSTALLATION

(1) Position the motor/hydraulic pump relay onto

the relay bracket and push into place so that the
retaining tab is fully seated.

(2) Connect the motor/hydraulic pump relay wire

harness connector (Fig. 4).

(3) Install the foam pump cover.
(4) Install the well liner/carpet into the power top

well.

(5) Install the rear seat back, (Refer to 23 - BODY/

SEATS/SEAT BACK - INSTALLATION).

(6) Connect the battery negative cable.
(7) Verify normal power top system operation.

SWITCH - POWER TOP

DESCRIPTION

The power top switch is located in the instrument

panel center stack mounted to the accessory switch
bezel (Fig. 5).

The power top switch is a resistor, multiplexed unit

that is hard wired to both window regulator modules,
(Refer to 8 - ELECTRICAL/POWER WINDOWS/
WINDOW

REGULATOR

MODULE

DESCRIP-

TION) for additional information. The power top
switch performs the following functions:

• Power top up (switch pushed upward)

• Power top down (switch pushed downward to

the first position)

• Power top express down/all windows down

(switch pushed downward to the second position and
held in place)

The power top switch cannot be adjusted or

repaired. If the switch is damaged or inoperative it
must be replaced, (Refer to 8 - ELECTRICAL/
POWER TOP/SWITCH - REMOVAL).

OPERATION

The power top switch is hard wired to both window

regulator modules. The switch sends a signal to the
modules of varying resistances depending on what
position the switch is in. The driver window regula-
tor module uses this resistance signal to perform one
of the following functions:

• Power top up (switch pushed upward)

Fig. 3 MOTOR/HYDRAULIC PUMP ASSEMBLY

1 - MOTOR/HYDRAULIC PUMP CONNECTOR
2 - MOTOR/HYDRAULIC PUMP RELAY
3 - MOTOR/HYDRAULIC PUMP RELAY CONNECTOR

Fig. 4 MOTOR/HYDRAULIC PUMP ASSEMBLY

1 - MOTOR/HYDRAULIC PUMP CONNECTOR
2 - MOTOR/HYDRAULIC PUMP RELAY
3 - MOTOR/HYDRAULIC PUMP RELAY CONNECTOR

POWER TOP - CONVERTIBLE - PT27

8N - 19

• Power top down (switch pushed downward to

the first position)

• Power top express down/all windows down

(switch pushed downward to the second position and
held in place)

DIAGNOSIS AND TESTING

SWITCH - POWER TOP

Any diagnosis of the power top system should

If the problem being diagnosed is an inoperative

power top switch illumination lamp, but the power
top switch operates as designed, replace the faulty
power top switch. For complete circuit diagrams,
refer to the appropriate wiring information. The wir-
ing 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.

(2) Remove the power top switch, (Refer to 8 -

ELECTRICAL/POWER TOP/SWITCH - REMOVAL).

(3) Disconnect the power top switch wire harness

connector.

(4) Using an ohmmeter, test the resistances of the

power top switch in each switch position. Refer to,
(Fig. 6) and the POWER TOP SWITCH TEST
CHART. If OK, use a scan tool and the proper Diag-
nostic Procedures Information to complete diagnosis
of the power top system. If not OK, replace the inop-
erative power top switch, (Refer to 8 - ELECTRICAL/
POWER TOP/SWITCH - REMOVAL).

Fig. 5 ACCESSORY SWITCH BEZEL LOCATION

1 - ACCESSORY SWITCH BEZEL

Fig. 6 POWER TOP SWITCH PIN OUT

8N - 20

POWER TOP - CONVERTIBLE - PT27

SWITCH - POWER TOP (Continued)

POWER TOP SWITCH TEST CHART

SWITCH POSITION

RESISTANCE BETWEEN PINS 2 and 3

OFF

4.75 K ohms

TOP UP

596 ohms

TOP DOWN

338 ohms

EXPRESS DOWN

175 ohms

ALL RESISTANCE VALUES ARE ± FIVE PERCENT

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the instrument panel center bezel,

(Refer to 23 - BODY/INSTRUMENT PANEL/IN-
STRUMENT PANEL CENTER BEZEL - REMOVAL).

(3) Remove two screws retaining the accessory

switch bezel (Fig. 7).

(4) Disconnect the harness connectors to the fol-

lowing (Fig. 8):

• Power Top Switch

• Rear Window Defogger Switch (if equipped)

• Traction Control Switch (if equipped)

• Cigar Lighter/Power Outlet
(5) To remove the power top switch from the bezel,

use both thumbs and slightly pull out on the two
retaining tabs holding the switch (Fig. 9).

Fig. 7 ACCESSORY SWITCH BEZEL

Fig. 8 ACCESSORY SWITCH BEZEL CONNECTORS

Fig. 9 ACCESSORY SWITCH BEZEL SWITCH

POWER TOP - CONVERTIBLE - PT27

8N - 21

SWITCH - POWER TOP (Continued)

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