Actron Professional Enhanced Scan Tool 9640A Manual de usuario descargar pdf (Pagina 57)

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GM Enhanced (OBD II) Diagnostics

Select

View Data

from theGM Func-

tion List and press

GM arranges the PIDs in four groups:

❒

Analog:

viewing of analog sensor

signals, such as measured volt-

age from O2 sensors, tempera-

ture sensors, and air flow

sensors.

❒

O2:

viewing oxygen sensor information.

❒

Misfire:

viewing of cylinder misfire information.

❒

Digital:

viewing of switches, solenoids and relays.

✓ Some GM trucks manufactured in 1996 – 1998 have only one PID group.

For these vehicles, the selection menu does not appear.

After selecting a group, the scan tool

asks the vehicle to provide the PIDs it

supports for that group.

The scan tool displays a menu with dis-

play options. Use the

select an option and press

Refer to “

Viewing Data

” on page 3-9 to

setup the data list.

After making a selection, press

to establish a communication link. Mul-

tiple PIDs may be sent if the vehicle is equipped with more than one computer

module — Powertrain Control Module (PCM), Transmission Control Module

(TCM), etc. The scan tool identifies them by their identification names (ID)

assigned by the manufacturer (i.e. $40 or $1F).

If the Scan Tool receives multiple

responses for a PID, such as MIL STA-

TUS, it displays the PID and with the

computer module ID blinking in paren-

theses.

If one or more modules stops responding, the scan tool displays a message that

the module is not responding and asks to continue without it. If No is selected,

the Scan Tool attempts to reestablish communication with that module.

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Actron Professional Enhanced Scan Tool 9640A Manual de usuario Pagina 57

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