ignition BUICK PARK AVENUE 2001 Repair Manual

6-49
When the TIRE PRESSURE LOW message appears on
the Driver Information Center, you should stop as soon
as you can and check all your tires for damage. If a tire
is flat, see ªIf a Tire Goes Flatº in the Index. Also check
the tire pressure in all four tires as soon as you can.
See ªInflation
-Tire Pressureº in the Index.
Any time you adjust a tire's pressure or have one or
more tires repaired or replaced, you'll need to reset
(calibrate) the check tire pressure system. You'll also
need to reset the system whenever you rotate the tires,
buy new tires, install or remove the compact spare, and
whenever the vehicle's battery has been disconnected.
Don't reset the check tire pressure system without first
correcting the cause of the problem and checking and
adjusting the pressure in all four tires. If you reset the
system when the tire pressures are incorrect, the check
tire pressure system will not work properly and may not
alert you when a tire is low or high.To reset (calibrate) the system:
1. Turn the ignition switch to RUN.
2. Press the GAGE INFO button on the DIC until
TIRE PRESSURE appears on the display.
3. Press and hold the DIC RESET button for about
five seconds. After five seconds, the display will
show TIRE PRESSURE RESET. If TIRE
PRESSURE RESET does not appear on the display
after about five seconds, see your dealer for service.
After you release the DIC RESET button, TIRE
PRESSURE NORMAL will appear on the display.
The system completes the calibration process during
driving. Calibration time can take 45 to 90 minutes,
depending on your driving habits. After the system has
been calibrated, the system will alert the driver that a tire
is low, up to a maximum speed of 65 mph (105 km/h).

6-69
Instrument Panel Bussed Electrical Center (BEC)
Fuse Usage
PERIM LP Perimeter Lamps
ACCY Accessory
IGN 3 Ignition 3Underhood Fuse Block
There are additional fuses located on the passenger's
side of the engine compartment.
To check the fuses in this underhood fuse center, turn
the knob counterclockwise and remove the cover. There
is a chart inside the cover that explains the features and
controls governed by each fuse and relay.

6-70
Minifuses Usage
1 Air Sol
2 SBM, LCM
3 Turn Signal
4
Pre
-Oxygen Sensor,
Post
-Oxygen Sensor
5 Air Bag (SIR)
6 PCMMinifuses Usage
7 AC Clutch
8 Ignition Feed
9 Horn Relay
10 Spare
11 Spare
12
Injectors #1
-6
13
C
-31
14 Right High Beam
15 Spare
16 Left High Beam
17 Spare
18 Right Low Beam
19 Left Low Beam
20 Stop
21 Fuel Pump Relay (Wire in BEC)
22 Run/CRK
23 PCM

6-71
Minifuses Usage
24 Parking Lamp
25 Hazard Flashers
26 Spare
27 Spare
28 ABS #2
Mini Relays Usage
29 Ignition
30 Horn
31 Cool Fan #2
32 Starter
33 Air Pump
34 Cool Fan SP
35 Cool Fan 1Micro Relays Usage
36 A/C CLU
37 Fuel Pump
Maxifuses Usage
38 Bat #1
39 Blower Motor
40 Cool Fan 2
41 Headlamp
42 BAT #2
43 Ignition
44 Starter
45 ABS
46 Fuse Puller

7-32
Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.

The key should turn to LOCK only when the shift
lever is in PARK (P).

The key should come out only in LOCK.
Parking Brake and Automatic Transaxle PARK (P)
Mechanism Check
CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.

To check the parking brake's holding ability: With
the engine running and transaxle in NEUTRAL (N),
slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking
brake only.

To check the PARK (P) mechanism's holding ability:
With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.