Reset check engine light – DAVIS FMS 3.9.3 DriveRight (8186) User Manual
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VPW (J1850-10.4) - Protocol used in some Chrysler, Buick, Chevy, Dodge, GMC, GM,
Isuzu, Jeep, Mercury, Oldsmobile, Pontiac, and Saturn vehicles from 1996 to 2004.
PWM (J1850-41.6) - Protocol used in most Ford vehicles from 1996 to 2006.
ISO (ISO9141) - Protocol used in some Volkswagen, Porsche, Volvo, Toyota, Subaru,
Nissan, Infinity, Mercedes Benz, Mazda, Landrover, and Kia vehicles from 1996 to 2004.
KWP (KWP2000, ISO14230) - Protocol used in some BMW, Audi, Porsche, Suzuki,
Subaru, and Volkswagen vehicles 2003 and earlier.
CAN (Control Area Network ISO 11898) - Protocol used for most vehicles 2004 and
later.
The specific OBDII Protocols list is available for CarChip data loggers with firmware version 3.12,
3.18 or later in Fleet Management Software version 3.9.3 or later. See the CarChip web site for
more information on updated CarChip firmware.
If your vehicle is not listed in the Specific Vehicle Exceptions, but are seeing odd behavior, it may
be that CarChip is trying to initialize a protocol that your vehicle does not use. When CarChip is
first connected to a vehicle, it cycles through the list of protocols to find the protocol the vehicle is
using. If a protocol is selected from the list, the next time CarChip is placed in that vehicle, the
selected protocol will be used. Do not select a specific protocol if you do not know your vehicle's
protocol. Contact
for assistance in selecting a specific protocol if you are
uncertain.
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Reset Check Engine Light
Use the CarChip Reset Check Engine Light command to turn the CarChip Reset Check Engine
Light feature on and off. Arming this feature resets the check engine light in the vehicle the
CarChip is used in. Disarming this feature means that the CarChip does not reset the check
engine light.
To change the CarChip Reset Check Engine Light status:
1. Select
Reset Check Engine Light in the CarChip Menu. The dialog box is displayed
showing the current state.
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