Manual

OBD2 25

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

■ Green LED – Indicates that all

engine systems are “OK” and operat-

ing normally. All monitors supported

by the vehicle have run and per-

formed their diagnostic testing, and

no trouble codes are present. A zero

will show on the Scan Tool’s display,

and all Monitor icons will be solid.

■ Yellow LED – Indicates one of the following conditions:

A. A PENDING CODE IS PRESENT – If

the yellow LED is illuminated, it may

indicate a Pending code is present.

Check the Scan Tool’s display for

confirmation. A Pending code is con-

firmed by the presence of a numeric

code and the word PENDING on the

Scan Tool’s display.

B. MONITOR NOT RUN STATUS – If the

Scan Tool’s display shows a zero

(indicating there are no DTC’s pres-

ent in the vehicle’s computer memo-

ry), but the yellow LED is illuminated,

it may be an indication that some of

the Monitors supported by the vehicle

have not yet run and completed their

diagnostic testing. Check the Scan

Tool’s display for confirmation. All

Monitor icons that are blinking have not yet run and completed

their diagnostic testing; all Monitor icons that are solid have run

and completed their diagnostic testing.

■ Red LED – Indicates there is a prob-

lem with one or more of the vehicle’s

systems. The red LED is also used to

indicate that DTC(s) are present (dis-

played on the Scan Tool’s screen). In

this case, the Multifunction Indicator

(Check Engine) lamp on the vehicle’s

instrument panel will be illuminated.

■ DTC’s that start with “P0”, “P2” and some “P3” are considered

Generic (Universal). All Generic DTC definitions are the same on

all OBD2 equipped vehicles. The Scan Tool automatically dis-

plays the code definitions (if available) for Generic DTC’s.