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GENERAL INFORMATION
3.14.9.4 SYSTEM FAULTS
There are two conditions that 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 .
1. 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. SYSTEM .
Use the DRBIII Inputs/Outputs function to fur-
ther isolate the specific concern. The DRBIII can
be queried to determine the status and battery
condition for each Sensor/Transmitter.
3.14.9.5 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 the
MENU button for YES, and the STEP button for
NO. For YES, the EVIC will revert to the previ-
ous 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, the EVIC
will display: ALL 5 TIRES W/ VEHICLE? Y
Use the STEP button to select YES or NO, and
the 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.
3.14.9.6 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 . The appropriate Sensor/Transmitter can
then be replaced or the out-of-specification pressure
condition 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 Tire Pressure
Monitor 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
Transmitter fault or pressure out of specification;
1. Attempt the Retrain procedure. If the display
reoccurs,
2. Replace the EVIC.
3.14.9.7 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 this specification.
The test will continue until any EVIC button is
pressed or until the ignition is cycled to OFF.
3.15 POWER DOOR LOCK SYSTEM
When the BCM receives input for a lock request
from a door lock switch, RKE or cylinder lock switch
(only with VTSS), it will turn the lock drivers on for
a specified time of 375 msec. If the request is there
beyond 375 msec, the BCM considers the door lock
signal stuck. Once a door lock or unlock signal is
stuck for longer than 10 seconds, the BCM will set
a trouble code and the signal input is ignored until
the stuck condition disappears. The door lock
switches provide a variable amount of resistance
thereby dropping the voltage of the multiplexed
(MUX) circuit and the BCM will respond to that
command.
32
sees no Sensor/
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