Diagnostic Worksheet
There are many operating conditions that lead to the malfunction
of engine components. A good grasp of such conditions can make
troubleshooting faster and more accurate.
In general, each customer feels differently about a problem. It is
important to fully understand the symptoms or conditions for a
customer complaint.
Utilize a diagnostic worksheet like the one shown below in order to
organize all the information for troubleshooting.
WORKSHEET SAMPLE
Customer name MR/MS Model & Year VIN
Engine # Trans. Mileage
Incident Date Manuf. Date In Service Date
SymptomshStartabilityhImpossible to starthNo combustionhPartial combustion
hPartial combustion when engine is warm
hPartial combustion when engine is cool
hPossible but hard to starthOthers [ ]
hIdlinghNo fast idlehUnstablehHigh idlehLow idle
hOthers [ ]
hDriveabilityhStumblehSurgehKnockhLack of power
hOthers [ ]
hEngine stallhAt the time of starthWhile idling
hWhile acceleratinghWhile decelerating
hJust after stoppinghWhile loading
Incident occurrencehJust after deliveryhRecently
hIn the morninghAt nighthIn the daytime
FrequencyhAll the timehUnder certain conditionshSometimes
Weather conditionshNot affected
WeatherhFinehRaininghSnowinghOthers [ ]
TemperaturehHothWarmhCoolhColdhHumid ÉF
Engine conditionshColdhDuring warm-uphAfter warm-up
Engine speed
Road conditionshIn townhIn suburbshHighwayhOff road (up/down)
Driving conditionshNot affected
hAt startinghWhile idlinghAt racing
hWhile acceleratinghWhile cruising
hWhile deceleratinghWhile turning (RH/LH)
Vehicle speed
Malfunction indicator lamphTurned onhNot turned on
SEF907L
TROUBLE DIAGNOSIS Ð Introduction
EC-43
Engine and Emission Control Service
Annual driving distance below 30,000 km (18,000 miles)
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace, A = Adjust. [ ]: At the speci®ed mileage only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
page Perform either at number of kilometers (miles)
or months, whichever comes ®rst.km x 1,000 10 20 30 40 50 60 70 80 90
(Miles x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54)
Months 6 12 18 24 30 36 42 48 54
Underhood and under vehicle
Engine anti-freeze coolant (Ethylene glycol base, LLC) See NOTE (2) R MA-14
Cooling systemI I I MA-16
Fuel linesI I MA-17
Fuel ®lterR R MA-16
Air cleaner ®lter (Viscous paper type).R R MA-18
Intake & exhaust valve clearanceAAAA *1
Injection nozzles See NOTE (3)MA-18
Timing belts for camshaft and injection pump[R] *2
NOTE: (1) Maintenance items with ``.'' should be performed more frequently according to ``Maintenance Under Severe
Driving Conditions''.
(2) First replace at 80,000 km (48,000 miles) or 48 months, then every 60,000 km (36,000 miles) or 36 months.
(3) If engine power decreases, black smoke is emitted or engine noise increases, check and, if necessary, adjust
the fuel injection nozzle's starting pressure and the fuel spray pattern.
*1: ``VALVE CLEARANCE'', RD in EM section
*2: ``TIMING BELT'' RD in EM section
Annual driving distance over 30,000 km (18,000 miles)
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace, A = Adjust.
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
page km x 1,000 10 20 30 40 50 60 70 80 90
(Miles x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54)
Underhood and under vehicle
Engine anti-freeze coolant (Ethylene glycol base, LLC) See NOTE (2) R MA-14
Cooling systemI I MA-16
Fuel linesI MA-17
Fuel ®lterR MA-16
Air cleaner ®lter (Viscous paper type).R MA-18
Intake & exhaust valve clearanceAAA*1
Injection nozzles See NOTE (3)MA-18
Timing belts for camshaft and injection pumpR*2
NOTE: (1) Maintenance items with ``.'' should be performed more frequently according to ``Maintenance Under Severe
Driving Conditions''.
(2) First replace at 90,000 km (54,000 miles), then every 60,000 km (36,000 miles).
(3) If engine power decreases, black smoke is emitted or engine noise increases, check and, if necessary, adjust
the fuel injection nozzle's starting pressure and the fuel spray pattern.
*1: ``VALVE CLEARANCE'', RD in EM section
*2: ``TIMING BELT'', RD in EM section
PERIODIC MAINTENANCE
MA-5
Chassis and Body Services
Annual driving distance below 30,000 km (18,000 miles)
Abbreviations: R = Replace, I = Inspect, and correct or replace as necessary, L = Lubricate,T=Tighten.
[ ]: At the speci®ed mileage only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference
page Perform either at number of kilometers (miles) or months,
whichever comes ®rst.km x 1,000 10 20 30 40 50 60 70 80 90
(Miles x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54)
Months 6 12 18 24 30 36 42 48 54
CHASSIS AND BODY Underhood and under vehicle
Brake & clutch ¯uid (For level & leaks).I I I I MA-23, 20
Brake ¯uid.R R MA-24
Brake booster vacuum hoses, connections & check valve I I MA-24
Power steering ¯uid & lines (For level & leaks) I I I I MA-26
Brake & clutch systemsI I I I MA-24, 20
Manual transmission oil (For leaks) I I I I MA-20
Manual transmission oil[R] MA-20
Transfer ¯uidI I R I MA-21
Limited slip differential (LSD) gear oil (For level & leaks).*1 I I R I MA-22
Steering gear & linkage, axle & suspension parts, propeller shaft & exhaust system.I I I I MA-26, 20 *2
Greasing points of propeller shaftLLLLMA-21
Drive shafts & steering damper.IIII *3
Body mounting bolts & nutsTTTT *4
Outside and Inside
Wheel alignment (If necessary, rotate & balance wheels) I I I I MA-25, *5
Brake pads, discs & other brake components.I I I I MA-24
Front wheel bearing grease I R I R MA-22
Axle joint in knuckle ¯angeL L MA-23
Free running hub greaseI I I I MA-23
Headlamp aimingIIII *6
Foot brake, parking brake & clutch (For free play, stroke & operation) I I I I *7
Ventilation air ®lterRRR*8
Body corrosionAnnually MA-28
Air bag systemSee NOTE (1) *9
NOTE: (1) Inspect after 10 years, then every 2 years.
(2) Maintenance items with ``.'' should be performed more frequently according to ``Maintenance Under Severe Driv-
ing Conditions''.
*1: Including differential gear with differential lock
*2: ``Front Axle and Front Suspension Parts'' in FA section, ``Rear Axle and Rear Suspension Parts'' in RA section
*3: ``FRONT AXLE Ð Drive Shaft'' in FA section
*4: ``CAB BODY'' in BT section
*5: ``Front Wheel Alignment'' in FA section
*6: ``Aiming Adjustment'' in EL section
*7: ``Brake Pedal and Bracket'' in BR section, ``Adjusting Clutch Pedal'' in CL section
*8: ``Ventilation air ®lter'' in HA section
*9: ``Maintenance Items'' in RS section
PERIODIC MAINTENANCE
MA-6