The Bureau of Automotive Repair asked all known manufacturers of
vehicles sold in California to provide information regarding compatibility of
their vehicles with single-axle dynamometers. Not all vehicle manufacturers
responded. This page presents information from those that did.
Placing any non-compatible vehicle on a single-axle dynamometer
could result in safety hazards to technicians and in damage to the vehicle.
Vehicles which use all-wheel drive or traction control may not be clearly
marked. Use common sense and take all necessary precautions when placing any
vehicle on the dynamometer.
|
Vehicle Make |
Comments About Traction Control |
| Acura |
All 1991-2002 NSX, 1993-1995 Legend Coupe LS, 1994-1995 Legend
Sedan GS, 1996-1997 3.2TL (Premium Package), 1999-2002 3.2TL, and 1996-2002
3.5RL (Premium Package) have traction control. The switch defaults to
"ON" and is located on the dash.
Although Acura offers the "Torque-On-Demand" (TOD) traction control
system on the 1998-1999 "SLX 4WD", TOD is engageable only during 4WD
operation. It will not affect operation during dyno testing in 2WD mode. |
| Alfa-Romeo |
All Alfa-Romeo vehicles are sold in the US without traction
control.
|
|
Audi
|
Vehicles with ASR traction control can be tested. ASR must be
set to "non-functional". ASR switch is located on the instrument
panel. Red warning light illuminates with system disabled. See the
Audi table for traction control specifics on Audi vehicles.
|
| BMW |
See the BMW table,
which indicates traction control by engine family (1988-up). All BMW traction
control systems are switchable. This can be easily done using the console
mounted on/off switch. Please be aware that this procedure will illuminate the
ABS and ASC warning lamps on the instrument cluster. This is a normal function.
The ABS/ASC systems will be immobilized until the warning lamps are switched
off. To switch the lamps off, the engine must be shut off for 30 seconds or
more and restarted. The lamps will go out when the vehicle speed exceeds 8 MPH.
Disengagement of the traction control system does not affect engine control
mapping.
|
| Buick |
1995-1998 LeSabre has optional traction control and it can be
disabled at the instrument panel. 1995-1998 Park Avenue has optional traction
control and it can be disabled at either the instrument panel or the shift
lever. 1997-1998 Park Avenue Ultra and 1996-1998 Skylark has standard traction
control and it can be disabled at the shift lever. 1997-1998 Regal has standard
traction control and it can be disabled at the console. 1995-1998 Riviera has
standard traction control and it can be disabled at the instrument panel.
|
| Cadillac |
1997-1998 Catera and 1998 Seville have standard traction
control and it can be disabled at the console. 1995-1998 DeVille and Eldorado,
1995-1996 Fleetwood, and 1995-1997 Seville have standard traction control and
it can be disabled in the glove box.
|
| Chevrolet |
See the Chevrolet
table for traction control specifics on 1995-1998 Chevrolet vehicles.
|
|
Chrysler
|
Optional on the following models: 1993-1996 New Yorker,
1993-1998 Concorde, 1993-1997 LHS, 1997 "300", 1998 Sebring
Convertible, and 1997-1998 Town and Country. The traction control switch is to
the right of the steering wheel. The switch must be turned off every time the
engine is restarted, prior to dyno testing.
|
|
Dodge
|
Optional on the following models: 1993-1998 Intrepid, 1997-1998
Caravan and Grand Caravan. The traction control switch is to the right of the
steering wheel. The switch must be turned off every time the engine is
restarted, prior to dyno testing.
|
|
Eagle
|
Optional on the 1993-1997 Vision. The traction control switch
is to the right of the steering wheel. The switch must be turned off every time
the engine is restarted, prior to dyno testing.
|
| Ferrari |
All Ferrari vehicles are sold in the US without traction
control.
|
| Fiat |
All Fiat vehicles are sold in the US without traction control.
|
| Ford |
Police specification Crown Victorias have traction control and
may not be tested on a single-axle dynamometer.
|
| Honda |
The 1999-2000 Honda Odyssey EX, 2001-2002 Honda Odyssey LX and
EX and 2001-2002 Accord V6 have traction control. The switch defaults to
"ON" and is located on the dash. |
| Infinity |
Traction Control standard on 1997-1998 "Q45". The
switch is on the dash, left of the steering wheel. TC defaults to ON.
Traction Control optional on 1991-1996 "Q45". The switch is on the
console. TC defaults to ON.
|
|
Isuzu
|
Although Isuzu offers the "Torque-On-Demand" (TOD)
traction control system on the 1998 Trooper, TOD is engageable only during 4WD
operation. It will not affect operation during dyno testing.
|
| Jaguar |
Traction control is optional and switchable for: sedan (XJ6)
1995-up and XK8 1997-up. Switch is located on center facia panel.
|
| Land Rover |
Range Rover vehicles sold in the US since 1993 are equipped
with traction control. It operates automatically at speeds less than 25 MPH and
is not disengageable.
|
| Lamborghini |
Lamborghini offered traction control as an option on some
vehicles 1994-present. All Lamborghini traction control systems are
disengageable.
|
| Lexus |
The 2000-2001 ES300, GS300, GS400, and LS400 all have traction
control which can be disabled for ASM testing. On the GS300, GS400, and LS400,
use the "VSC off" switch.
|
| Mazda |
Mazda says traction control on the 1995-1999 Millenia is
"either optional or disengageable".
|
| Mercedes-Benz |
Mercedes claims all models newer than 1992 cannot be tested on
a single-axle dyno. Mercedes says the traction control system should not be
disabled for this purpose. 1991-1992 Mercedes vehicles with "ASR"
also cannot be tested on the dyno.
|
|
Mitsubishi
|
Some 1996 Diamantes were sold with disengageable traction
control; which was not offered after 1996.
|
| Nissan |
All Nissan vehicles are sold in the US without traction
control. |
| Oldsmobile |
See the Oldsmobile
table for traction control specifics on 1995-1998 Oldsmobile vehicles.
|
| Plymouth |
Optional on the 1997 Voyager and Grand Voyager. The traction
control switch is to the right of the steering wheel. The switch must be turned
off every time the engine is restarted, prior to dyno testing.
|
| Pontiac |
See the Pontiac
table for traction control specifics on 1995-1998 Pontiac vehicles.
|
| Porsche |
The 1997-1999 "Boxster" and the 1999-2000 "911
Carrera/Carrera-4" have traction control. It is standard equipment on
those models (not optional). It is optional on the 2000
"Boxster/Boxster-S".
Porsche traction control can be disengaged, but disengaging affects engine
control mapping. Therefore, if an equipped vehicle fails an ASM inspection
(traction control OFF), send motorist to the Referee.
|
| Saab |
See the Saab table
for traction control specifics on 1992-1999 Saab vehicles.
|
| Saturn |
The following models have optional traction control that is
disengageable at the instrument panel:
1995 SC/SL/SW with ABS and auto trans, 1996-1998 SC/SL/SW with ABS.
|
| Subaru |
Subaru's two-wheel drive 1995 Legacy Sedan, 1995 Legacy
Station Wagon and 1996 Legacy Sedan may be equipped with the Subaru Traction
Control System (TCS) as an option. Prior to dyno testing, the TCS switch on the
dash must be placed in the "off" position after starting the engine.
|
| Suzuki |
All Suzuki vehicles are sold in the US without traction
control.
|
| Toyota |
The 2000 4Runner 2WD, 2000-2001 4Runner 4WD, and
the 2001 Sequoia 4WD are not testable on a dynamometer due to non-switchable
traction control. The "Center Differential Lock" or "VSC OFF" switches do not
deactivate traction control. There is no combination of switch setting and
2WD/4WD selector position that will deactivate traction control on these
models.
The 2001 4Runner 2WD and 2001 Sequoia 2WD may be tested on a dynamometer after
using the "TRAC OFF" switch on the dashboard. TRAC is activated automatically
when the front wheels exceed 19 mph, and will not occur on a single-axle
dynamometer.
2001 Prius hybrid-electric vehicles must be I/M tested at the Referee.
|
|
Volkswagen
|
Vehicles with ASR traction control can be tested. ASR must be
set to "non-functional". ASR switch is located on the instrument
panel. Red warning light illuminates with system disabled. See the
Volkswagen table for traction control specifics on Volkwagen vehicles.
|
| Volvo |
All Volvo vehicles which were optionally equipped with
Volvo's "TRACS" system may be disengaged by a switch on the dash
panel.
|
