Actron KAL9620A - Manual (Page 10)

10 9620 Professional OBD II Scan Tool
Diagnostic
Connector
Section 2: Diagnosing with the Scan Tool
2.1 Preliminary Checks
Before using scan tool, perform a complete visual inspection. Many driveability problems
are found by visual inspection, saving time. Check the following items before proceeding
with scan tool testing:
1. Has vehicle been serviced recently? Sometimes
things get connected in the wrong place, or not at all.
2. Don’t take shortcuts. Inspect hoses and wiring which
may be difficult to see because of location beneath air
cleaner housings, alternators and similar
components.
3. Inspect air cleaner and ductwork for defects.
4. Check sensors and actuators for damage.
5. Inspect all vacuum hoses for:
• Correct routing. Refer to vehicle service manual, or
Vehicle Emission Control Information (VECI) decal
located in engine compartment.
• Pinches and kinks.
• Splits, cuts or breaks.
6. Inspect wiring for:
• Contact with sharp edges (this happens frequently).
• Contact with hot surfaces, such as exhaust manifolds.
• Pinched, burned or chafed insulation.
• Proper routing and connections.
7. Check electrical connectors for:
• Corrosion on pins.
• Bent or damaged pins.
• Contacts not properly seated in housing.
• Bad wire crimps to terminals.
Connector problems are common in engine control
system. Inspect for corrosion, bent, pushed out, or over
expanded pins.
Note: Some connectors use special grease on contacts to prevent corrosion. Do not wipe
off! Obtain grease, from vehicle dealer. It is a special type for this purpose.
2.2 Connecting the Scan Tool
Remove protective cap from data link connector,
if present. Connect scan tool and follow scan
tool prompts. Use scan tool 9V battery to do self-
tests, review codes, code lookup or print data
when connection to vehicle is not required.
When scan tool powers up, a series of screens
are displayed. The screen starts with “Welcome”
and ends with a “Key Button Help”.
FRONT
OF CAR
HVAC
CRUISE
BRAKE BOOSTER
TO TRANS
MODE
EGR
VAC
REG
FUEL
PRESS
REG
EGR
VAC
REG
9RAC2LAB
T
ER
P
A.
M