lamp for when the ignition switch is turned to the
ON position. The CHIME will sound four to eight
seconds if the driver’s seat belt is not fastened. Pas-
senger belts are not connected to the system. The
light will stay illuminated at all times when the
driver seat belt is not buckled.

HEADLAMPS REMINDER

These are the conditions that have to be met for

the headlamps on, chime function to work:

• Headlamps ON and

• Driver’s door open and

• Key removed from the ignition switch.
Chime should sound until headlamps are turned

off or the drivers door is closed.

KEY IN IGNITION REMINDER

The chime will activate if the drivers door is

opened and the key is in the ignition switch, with the

ignition switch in either the OFF, LOCK, or the
accessory (ACC) position.

DOOR AJAR CHIME

The chime will sound once when:
• Door opened and

• Ignition in RUN position and

• Vehicle speed is present

PARK BRAKE REMINDER

The cluster shall chime 10 times and continuously

flash the brake indicator when:

• Park brake is activated and

• Vehicle speed is present.

LOW FUEL REMINDER

When the fuel level drops to about 1/8 tank, the

fuel symbol will light and a single chime will sound.
The light will remain on until fuel is added. If the
fuel level drops to empty, the fuel symbol will flash
several times and the chime will sound several times.

DIAGNOSIS AND TESTING

DIAGNOSIS AND TESTING - FASTEN SEAT
BELTS

To test the fasten seat belts function, turn the igni-

tion switch to the ON position with the driver’s seat
belt unbuckled and fully retracted. The seat belt
warning lamp should light for four to eight seconds
and the tone should sound three to five times.

If the lamp does not light, check the connection at

the seat belt retractor. Replace as necessary.

DIAGNOSIS AND TESTING - KEY LEFT IN
IGNITION

To test the key left in ignition function, insert key

into the ignition and open the driver’s door. Chime
should sound until key is removed from ignition or
driver’s door is closed.

PL/SRT-4

CHIME/BUZZER

8B - 1

If these conditions are met and there is still a

problem with the system, refer to Electrical, Chime/
Buzzer, Diagnosis and Testing - Chime System Con-
ditions.

DIAGNOSIS AND TESTING - CHIME SYSTEM
CONDITIONS

NO TONE WHEN IGNITION SWITCH IS TURNED ON
AND DRIVERS SEAT BELT IS UNBUCKLED

(1) Using an ohmmeter, with the seat belt fully

retracted, check for continuity to ground at Pin 25 of
the 26-way cluster harness connector. If OK, go to
Step 2. If not OK, repair as necessary.

(2) Using voltmeter, check for battery feed at Pin

21 of the 26-way cluster harness connector. Check for
ignition feed at Pin 15 of the 26-way cluster harness
connector. If not OK, repair as necessary.

NO FASTEN SEAT BELT LAMP WHEN IGNITION
SWITCH IS ON

(1) Check for battery feed at cluster harness con-

nector Pin 21.

(2) Check for ignition feed at cluster harness con-

nector Pin 15. Repair as necessary.

NO TONE WHEN HEADLAMPS ARE ON AND
DRIVERS DOOR IS OPEN

(1) Remove the key from the ignition.

(2) Check left door jamb switch for good ground

when drivers door is open.

(3) Check for ground at Pin 10 of the 26-way clus-

ter harness connector.

(4) Check for battery feed at cluster harness con-

nector Pin 21 of the 26-way cluster harness connec-
tor.

(5) Check for NO voltage at Pin 15. Ignition volt-

age must not be present for the chime to work.

(6) Check headlamp switch.

NO TONE WHEN KEY IS LEFT IN IGNITION AND
DRIVERS DOOR IS OPEN

(1) Check for continuity to ground at Pin 10 of the

26-way cluster harness connector. If OK, go to Step 3.
If not OK, repair as necessary.

(2) Using voltmeter, check for battery feed at Pin

21 of the 26-way cluster harness connector. Check for
NO ignition feed at Pin 15 of the 26-way cluster har-
ness connector. If OK, go to Step 3. If not OK, repair
as necessary.

(3) Open driver’s door and ensure the ignition key

is in the OFF, LOCK, or ACC position. Check for con-
tinuity to ground at Pin 24 of the 26-way cluster har-
ness connector. If ground OK, replace cluster printed
circuit board. If no ground, check key-in switch or
door switch wiring and repair as necessary.

8B - 2

CHIME/BUZZER

PL/SRT-4

CHIME/BUZZER (Continued)

ELECTRONIC CONTROL MODULES

TABLE OF CONTENTS

page

ELECTRONIC CONTROL MODULES

STANDARD PROCEDURE - PCM/SKIM

PROGRAMMING

. . . . . . . . . . . . . . . . . . . . . . . 1

COMMUNICATION

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 2

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

CONTROLLER ANTILOCK BRAKE

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 4

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 5

DATA LINK CONNECTOR

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . . 5

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

POWERTRAIN CONTROL MODULE

DESCRIPTION

OPERATION - SENSOR RETURN - PCM

INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

OPERATION - DATA BUS COMMUNICATION

RECEIVE - PCM INPUT . . . . . . . . . . . . . . . . . . 6

OPERATION - IGNITION SENSE - PCM

INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION - PCM GROUND

. . . . . . . . . . . . . 6

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION - 5 VOLT SUPPLY - PCM

OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

STANDARD PROCEDURE

STANDARD PROCEDURE - OBTAINING

DIAGNOSTIC TROUBLE CODES . . . . . . . . . . 10

STANDARD PROCEDURE - PINION

FACTOR SETTING . . . . . . . . . . . . . . . . . . . . . 10

STANDARD PROCEDURE - QUICK LEARN

PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . 10

REMOVAL

REMOVAL - 1.6L

. . . . . . . . . . . . . . . . . . . . . . 10

REMOVAL - 2.0/2.4/2.4 TURBO/2.4L SRT-4

. . 11

INSTALLATION

INSTALLATION - 1.6L

. . . . . . . . . . . . . . . . . . 12

INSTALLATION - 2.0L

. . . . . . . . . . . . . . . . . . 12

SENTRY KEY IMMOBILIZER MODULE

DESCRIPTION

. . . . . . . . . . . . . . . . . . . . . . . . . 12

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . 13

STANDARD PROCEDURE - SENTRY KEY

IMMOBILIZER SYSTEM INITIALIZATION

. . . . 13

REMOVAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . 14

ELECTRONIC CONTROL
MODULES

STANDARD PROCEDURE - PCM/SKIM
PROGRAMMING

NOTE: Before replacing the PCM for a failed driver,
control circuit or ground circuit, be sure to check
the related component/circuit integrity for failures
not detected due to a double fault in the circuit.
Most PCM driver/control circuit failures are caused
by internal component failures (i.e. relay and sole-
noids) and shorted circuits (i.e. pull-ups, drivers
and switched circuits). These failures are difficult to
detect when a double fault has occurred and only
one DTC has set.

When a PCM (SBEC) and the SKIM are replaced

at the same time perform the following steps in
order:

(1) Program the new PCM (SBEC)
(2) Program the new SKIM

(3) Replace all ignition keys and program them to

the new SKIM.

PROGRAMMING THE PCM (SBEC)

The SKIS Secret Key is an ID code that is unique

to each SKIM. This code is programmed and stored
in the SKIM, PCM and transponder chip (ignition
keys). When replacing the PCM it is necessary to
program the secret key into the new PCM using the
DRB III. Perform the following steps to program the
secret key into the PCM.

(1) Turn the ignition switch on (transmission in

park/neutral).

(2) Use the DRB III and select THEFT ALARM,

SKIM then MISCELLANEOUS.

(3) Select PCM REPLACED (GAS ENGINE).
(4) Enter secured access mode by entering the

vehicle four-digit PIN.

(5) Select ENTER to update PCM VIN.

PL/SRT-4

ELECTRONIC CONTROL MODULES

8E - 1

Content .. 70 71 72 73 ..