Manual

Preparation for Testing
PRELIMINARY VEHICLE DIAGNOSTIC WORKSHEET
34 OBD2
AUTOMATIC TRANSMISSION PROBLEMS (if applicable)
❏ No symptoms
❏ Shifts too early or too late
❏ Changes gear incorrectly
❏ Vehicle does not move
when in gear
❏ Jerks or bucks
PROBLEM OCCURS
❏ Morning ❏ Afternoon ❏ Anytime
ENGINE TEMPERATURE WHEN PROBLEM OCCURS
❏ Cold ❏ Warm ❏ Hot
DRIVING CONDITIONS WHEN PROBLEM OCCURS
❏ Short - less than 2 miles
❏ 2 - 10 miles
❏ Long - more than 10 miles
❏ Stop and go
❏ While turning
❏ While braking
❏ At gear engagement
❏ With A/C operating
❏ With headlights on
❏ During acceleration
❏ Mostly driving downhill
❏ Mostly driving uphill
❏ Mostly driving level
❏ Mostly driving curvy
roads
❏ Mostly driving rough
roads
DRIVING HABITS
❏ Mostly city driving
❏ Highway
❏ Park vehicle inside
❏ Park vehicle outside
❏ Drive less than 10 miles per day
❏ Drive 10 to 50 miles per day
❏ Drive more than 50 miles per
day
GASOLINE USED
❏ 87 Octane
❏ 89 Octane
❏ 91 Octane
❏ More than 91 Octane
WEATHER CONDITIONS WHEN PROBLEM OCCURS
❏ 32 - 55° F (0 - 13° C)
❏ Below freezing (32° F / 0° C)
❏ Above 55° F (13° C)
CHECK ENGINE LIGHT / DASH WARNING LIGHT
❏ Sometimes ON ❏ Always ON ❏ Never ON
PECULIAR SMELLS
❏ "Hot"
❏ Sulfur ("rotten egg")
❏ Burning rubber
❏ Gasoline
❏ Burning oil
❏ Electrical
STRANGE NOISES
❏ Rattle
❏ Knock
❏ Squeak
❏ Other