Chrysler Voyager. Manual — part 429

3. The EVIC will request the initiation of a training

sequence for each tire, one-by-one in a clockwise
direction around the vehicle (Left Front, Right
Front, Right Rear and Left Rear).
NOTE:

1. If one or all Sensor/Transmitters cannot be

trained move vehicle to avoid radio fre-
quency interference.

2. If one Sensor/Transmitter still cannot be

trained, replace it and retry.

3. If all Sensor/Transmitters still fail to train,

replace the EVIC.

4. Once all tires are successfully learned, the pre-

vious set of stored IDs will be replaced by the
new IDs, and the EVIC will display, “TRAINING
COMPLETE” until a button is pressed.

If the vehicle is equipped with the Homelink

feature and a Homelink button is pressed at any
time during the training procedure, the EVIC mod-
ule will immediately exit the training procedure,
discard any IDs learned in the current session and
perform the Homelink function. After the button is
released, the module will display “RETRAIN TIRE
SENSORS? NO.”

The training procedure can be stopped at any

time by pressing the C/T, STEP, RESET or MENU
button. When any of these buttons are pressed the
EVIC will display “TRAINING ABORTED” until
another button is pressed and then display “RE-
TRAIN TIRE SENSORS? NO.”

Sensor/transmitter replacement or tire rotation

will require retraining of the EVIC.

3.7.2

PRESSURE THRESHOLDS

The EVIC will monitor the tire pressure signals

from the tire Sensor/Transmitters and determine if
any tire has gone below the low pressure threshold
or exceeded the high pressure threshold. Refer to
the table below.

LOW TIRE PRESSURE THRESHOLDS

SYSTEM STATUS

INDICATOR

TIRE PRESSURE

On

179 kPa
(26 PSI)

Off

214 kPa
(31 PSI)

HIGH TIRE PRESSURE THRESHOLDS

SYSTEM STATUS

INDICATOR

TIRE PRESSURE

On

310 kPa
(45 PSI)

Off

276 kPa
(40 PSI)

3.7.2.1

CRITICAL AND NON-CRITICAL
SYSTEM ALERTS

Critical:
A critical alert will be triggered when a tire

pressure has gone below or above a set threshold
pressure. The EVIC will request a chime and then
display “X TIRE(S) LOW PRESSURE” or “X TIRES
HIGH PRESSURE”. “X” will be the number of tires
reporting low or high pressure.

The message will display for the duration of the

current ignition cycle or until the an EVIC button is
pressed. If the display is removed without correct-
ing the condition, it will reappear without a chime
after 300 seconds to warn the driver of the low or
high pressure condition.

Non-Critical:
A non-critical alert with no chime will be trig-

gered when no signal is received from a Sensor/
Transmitter or when a Sensor/Transmitter low bat-
tery condition is detected. The EVIC will display
“SERVICE TIRE PRESS. SYSTEM”.

3.7.3

SYSTEM FAULTS

There are two conditions which will cause a Tire

Pressure Monitoring System fault to be set. All fault
codes are associated with a specific wheel location.
1. If the EVIC detects a non-transmitting Sensor/

Transmitter condition, it will:

a. Store an active fault code.
b. Request a chime
c. Display “SERVICE TIRE PRESS. SYSTEM”

2.

When the EVIC receives a Low Sensor/
Transmitter battery report from a Sensor/
Transmitter, it will

a. Store an active fault code.
b. Request a chime.
c. Display “SERVICE TIRE PRESS. SYS-

TEM”.

Use the DRBIII

t Inputs/Outputs function to fur-

ther isolate the specific concern. The DRBIII

t can

be queried to determine the status and battery
condition for each Sensor/Transmitter.

3.7.4

SPARE WHEEL AUTO-DETECT

If the spare tire is mounted on the vehicle, the

EVIC will:

1. detect the change after 15 minutes at or above 32

km/h (20 mph)

2. query driver: “SPARE TIRE IN USE?”

Use MENU button for YES and STEP button for
NO. For YES the EVIC will revert to previous
display and wait five hours. After five hours the
EVIC will proceed as in the NO response below.

3. for a NO response, after 15 minutes, display:

“ALL 5 TIRES W/ VEHICLE? Y” Use the STEP

5

GENERAL INFORMATION

button to select YES or NO and MENU button to
confirm.
For a “YES” response the EVIC will display
“SERVICE TIRE PRESS. SYSTEM”.
For a “NO” response, the EVIC will revert to
previous display and display “ALL 5 TIRES W/
VEHICLE? Y” every time the ignition is cycled to
RUN and the missing tire ID is not received.

3.7.5

DIAGNOSING AND CLEARING
SYSTEM FAULTS

All Tire Pressure Monitoring System Faults are

specific to one location. If a no-transmit, “LOW
BATTERY”, “LOW or HIGH PRESSURE” fault is
detected, the location can be determined by the
DRBIII

t. The appropriate Sensor/Transmitter can

then be replaced or the out-of-spec pressure condi-
tion can be corrected.

•

If a single Sensor/Transmitter cannot be detected
by the EVIC, replace that Sensor/Transmitter.

•

If none of the Sensor/Transmitters can be de-
tected, refer to symptoms in the EVIC section.

•

If a BUCKET COUNTER test fails, and one or
more Sensor/Transmitters does not transmit, re-
place the affected Sensor/Transmitter.

•

If none of the Sensor/Transmitter causes the
BUCKET COUNTER to advance, replace the
EVIC.

•

If the EVIC displays SERVICE TIRE PRESS.
SYSTEM and the DRBIII

t sees no Sensor/

Transmitter fault or pressure out of specification,

1. attempt the Retrain procedure. If the display

reoccurs,

2. replace the EVIC.

3.7.6

SYSTEM TEST

A test of the Tire Pressure Monitoring System can

be initiated in the EVIC. The test sequence is as
follows:

1. Perform the RETRAIN TIRE SENSORS proce-

dure.

2. Press and hold the RESET and STEP buttons for

five seconds.

3. The EVIC will display BUCKET COUNTERS.

4. Drive the vehicle at 32 km/h (20 mph) for at least

2 minutes.

5. The counters will increase by one each time a

Sensor/Transmitter signal is received by the
EVIC.

6. Observe that the COUNTERS register at least 3

receptions for each Sensor/Transmitter.

7. Replace any Sensor/Transmitter that does not

meet specification.

8. The test will continue until any EVIC button is

pressed or until the ignition is cycled to OFF.

3.8

DRBIII

T ERROR MESSAGES AND

BLANK SCREEN

Under normal operation, the DRBIII

t will dis-

play one of only two error messages:

– User-Requested

WARM

Boot

or

User-

Requested COLD Boot.

If the DRBIII

t should display any other error

message, record the entire display and call the
STAR Center. This is a sample of such an error
message display:

ver: 2.14
date: 26 Jul93
file: key_itf.cc
date: Jul 26 1993
line: 548
err. 0x1
User-Requested COLD boot Press MORE to
switch between this display

and the application screen.

Press F4 when done noting information.

3.8.1

DRBIII

T DOES NOT POWER UP

If the LED’s do not light or no sound is emitted at

start up, check for loose cable connections or a bad
cable. Check the vehicle battery voltage (data link
connector cavity 16). A minimum of 11 volts is
required to adequately power the DRBIII

t.

If all connections are proper and the vehicle

battery is fully charged, an inoperative DRBIII

t

may be the result of faulty cable or vehicle wiring.

3.8.2

DISPLAY IS NOT VISIBLE

Low temperatures will affect the visibility of the

display. Adjust the contrast to compensate for this
condition.

6

GENERAL INFORMATION

4.0

DISCLAIMERS, SAFETY,
WARNINGS

4.1

DISCLAIMERS

All information, illustrations, and specifications

contained in this manual are based on the latest
information available at the time of publication.
The right is reserved to make changes at any time
without notice.

4.2

SAFETY

4.2.1

TECHNICIAN SAFETY INFORMATION

WARNING: ENGINES PRODUCE CARBON
MONOXIDE THAT IS ODORLESS, CAUSES
SLOWER REACTION TIME, AND CAN LEAD
TO SERIOUS INJURY. WHEN THE ENGINE IS
OPERATING, KEEP SERVICE AREAS WELL
VENTILATED OR ATTACH THE VEHICLE
EXHAUST SYSTEM TO THE SHOP EXHAUST
REMOVAL SYSTEM.

Set the parking brake and block the wheels before

testing or repairing the vehicle. It is especially
important to block the wheels on front-wheel drive
vehicles; the parking brake does not hold the drive
wheels.

When servicing a vehicle, always wear eye pro-

tection, and remove any metal jewelry such as
rings, watchbands or bracelets that might make an
inadvertent electrical contact.

When diagnosing a chassis problem, it is impor-

tant to follow approved procedures where applica-
ble. These procedures can be found in the service
manual. Following these procedures is very impor-
tant to the safety of individuals performing diag-
nostic tests.

4.2.2

VEHICLE PREPARATION FOR
TESTING

Make sure the vehicle being tested has a fully

charged battery. If is does not, false diagnostic codes
or error messages may occur.

4.2.3

SERVICING SUB-ASSEMBLIES

Some components of the chassis system are in-

tended to be serviced as an assembly only. Attempt-
ing to remove or repair certain system sub-
components may result in personal injury and/or
improper system operation. Only those components
with approved repair and installation procedures in
the service manual should be serviced.

4.2.4

DRBIII

T SAFETY INFORMATION

WARNING: EXCEEDING THE LIMITS OF THE
DRBIII

T

MULTIMETER IS DANGEROUS. IT

CAN

EXPOSE

YOU

TO

SERIOUS

OR

POSSIBLY

FATAL

INJURY.

CAREFULLY

READ AND UNDERSTAND THE CAUTIONS
AND THE SPECIFICATION LIMITS.

•

Follow the vehicle manufacturer’s service speci-
fications at all times.

•

Do not use the DRBIII

t if it has been damaged.

•

Do not use the test leads if the insulation is
damaged or if metal is exposed.

•

To avoid electrical shock, do not touch the test
leads, tips, or the circuit being tested.

•

Choose the proper range and functions for the
measurement. Do not try voltage or current mea-
surements that may exceed the rated capacity.

•

Do not exceed the limits shown in the table below:

FUNCTION

INPUT LIMIT

Volts

0 - 500 peak volts AC
0 - 500 volts DC

Ohms (resistance)*

0 -1.12 megohms

Frequency Measured
Frequency Generated

0 - 10 kHz

Temperature

-58 - 1100°F
-50 - 600°C

* Ohms cannot be measured if voltage is present.

Ohms can be measured only in a non-powered
circuit.

•

Voltage between any terminal and ground must
not exceed 500v DC or 500v peak AC.

•

Use caution when measuring voltage above 25v
DC or 25v AC.

•

Use the low current shunt to measure circuits up
to 10A. Use the high current clamp to measure
circuits exceeding 10A.

•

When testing for the presence of voltage or cur-
rent, make sure the meter is functioning cor-
rectly. Take a reading of a known voltage or
current before accepting a zero reading.

•

When measuring current, connect the meter in
series with the load.

•

Disconnect the live test lead before disconnecting
the common test lead.

•

When using the meter function, keep the
DRBIII

t away from spark plug or coil wires to

avoid measuring error from outside interference.

7

GENERAL INFORMATION

4.3

WARNINGS

4.3.1

VEHICLE DAMAGE WARNINGS

Before disconnecting any control module, make

sure the ignition is ‘‘off ’’. Failure to do so could
damage the module.

When testing voltage or continuity at any control

module, use the terminal side (not the wire end) of
the connector. Do not probe a wire through the
insulation, this will damage it and eventually cause
it to fail because of corrosion.

Be careful when performing electrical tests so as

to prevent accidental shorting of terminals. Such
mistakes can damage fuses or components. Also, a
second code could be set, making diagnosis of the
original problem more difficult.

4.3.2

ROAD TESTING A COMPLAINT
VEHICLE

Some complaints will require a test drive as part

of the repair verification procedure. The purpose of
the test drive is to try to duplicate the diagnostic
code or symptom condition.

WARNING:

BEFORE

ROAD

TESTING

A

VEHICLE,

BE

SURE

THAT

ALL

COMPONENTS

ARE

REASSEMBLED.

DURING THE TEST DRIVE, DO NOT TRY TO
READ THE DRB SCREEN WHILE IN MOTION.
DO NOT HANG THE DRBIII

T

FROM THE

REAR

VIEW

MIRROR

OR

OPERATE

IT

YOURSELF.

HAVE

AN

ASSISTANT

AVAILABLE TO OPERATE THE DRBIII

T

.

4.4

DIAGNOSIS

1. Your diagnostic test procedure must begin with a

thorough visual inspection of the system in ques-
tion for damaged components or disconnected
connectors. For ABS the brake lamps must be
operational prior to continuing.

2. Connect the DRBIII

t to the data link connector,

which is located under the dash to the left of the
steering column. If the DRBIII

t does not power

up, check the power and ground supplies to the
connector.

3. Turn the ignition on. Select the system in ques-

tion. If the DRBIII

t displays “No Response”

condition you must diagnose that first.

4. Read and record all diagnostic trouble codes. For

ABS if the “CAB Power Feed Circuit” diagnostic
trouble code is present, it must be repaired prior
to addressing any other DTC’s. If any additional
DTC’s are present, proceed to the appropriate

test by locating the matching test in the Table of
Contents and begin to diagnose the symptom.

5. For ABS if there are no diagnostic trouble codes

present, identify the customer complaint. Select
“Inputs/Outputs” and read the brake switch in-
put as you press and release the brake pedal. If
the display does not match the state of the pedal,
perform the proper test by locating the matching
test in the Table of Contents and begin to diag-
nose the symptom. If a problem exists with the
yellow “ABS” warning indicator or the red
“Brake” indicator exists, refer to the proper tests
by locating the matching test in the Table of
Contents and begin to diagnose the symptom.
Read the traction control switch input as you
press and release the switch. If the display does
not match the state of the indicator perform the
proper test by locating the matching test in the
Table of Contents and begin to diagnose the
symptom.

6. If no other problems are found, it will be neces-

sary to road test the vehicle. Perform several
antilock stops from above 50 Km/h (30 mph) and
then repeat step 4. If any diagnostic trouble
codes are present, proceed to the appropriate
test.

7. The following conditions should be considered

“NORMAL” operation, and no repairs should be
attempted to correct them.

– Brake pedal feedback during an ABS stop

(clicking, vibrating).

– Clicking, groaning or buzzing at 25 Km/h (15

mph) or 40 Km/h (24 mph) (drive off self test).

– Groaning noise during an ABS stop.

– Slight brake pedal drop and pop noise when

ignition is initially turned on.

– Brake pedal ratcheting down at the end of an

ABS stop.

8. If the complaint is ABS “cycling” at the end of a

stop at low speeds, it may be caused by a
marginal wheel speed sensor signal. The sensor
air gap, tone wheel condition, and/or brakes
hanging up are possible causes of this condition.

9. After a road test in which no problems were

found, refer to any Technical Service Bulletins
that may apply.

5.0

REQUIRED TOOLS AND
EQUIPMENT

DRBIII

t (diagnostic read-out box)

jumper wires
ohmmeter
voltmeter
test light

8

GENERAL INFORMATION