odometer ISUZU KB P190 2007 Workshop Repair Manual

0B-2 MAINTENANCE AND LUBRICATION
MAINTENANCE SCHEDULE (For GENERAL EXPORT)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Replace the fuel filter (**Mark) when the fuel filter indicator light is lit.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate


SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
ENGINE
Idling speed and acceleration
(GASOLINE) I I - I - I - I - I - I - I - I - I - I (DIESEL) I I I I I I I I I I I I I I I I I I I I * Air cleaner element
(GASOLINE) - I - I - I - R - I - I - I - R - I - I (DIESEL) I I I I I I I R I I I I I I I R I I I I * Engine oil (HFV6) - - R - - R - - R - - R - - R - - R - - (C24SE) Replace every 12,000km (4JH1-TC, 4JJ1 (Standard Output),
4JJ1 (High Output)) - R - R - R - R - R - R - R - R - R - R

(4JA1-T) R R R R R R R R R R R R R R R R R R R R * Engine oil filter (HFV6) - - R - - R - - R - - R - - R - - R - - (C24SE) Replace every 12,000km (4JH1-TC, 4JA1-T) - R - R - R - R - R - R - R - R - R - R (4JJ1 (Standard Output),
4JJ1 (High Output)) - - - R - - - R - - - R - - - R - - - R
Oil leakage and contamination (GASOLINE) - I - I - I - I - I - I - I - I - I - I (DIESEL) I I I I I I I I I I I I I I I I I I I I Fuel leakage
I I - I - I - I - I - I - I - I - I - I Fuel tank - - - I - - - I - - - I - - - I - - - I O2 Sensor (C24SE) Replace every 160,000km (HFV6)
MIL diagnostic Indicates O2 Sensor Valve clearances (6VE1) Check and adjust if noisy (4JH1-TC, 4JA1-T) A - - A - - - A - - - A - - - A - - - A (4JJ1 (Standard Output),
4JJ1 (High Output)) - - - - - - - A - - - - - - - A - - - -
Spark plugs (C24SE) (for leaded fuel
use) - R - R - R - R - R - R - R - R - R - R
Spark plugs (C24SE) (for unleaded
fuel use) - - - - - R - - - - - R - - - - - R - -
Spark plugs
(HFV6) Replace every 120,000km Spark plug wire - - - - - - - - - - - - - - - - - - - I Fuel filter (GASOLINE) - - - R - - - R - - - R - - - R - - - R (4JH1-TC, 4JA1-T) - - R - - R - - R - - R - - R - - R - - ** (4JJ1 (Standard Output),
4JJ1 (High Output)) Replace the fuel filter when the fuel filter indicator light is lit.
Fuel pump in fuel tank
(4JJ1 (Standard Output),
4JJ1 (High Output)) - - - - - - - I - - - - - - - I - - - -
Engine / Accessory drive belt
(C24SE) - - - - - - - - - I - - - - - - - - - I

(HFV6) Replace every 100,000km Fan belt tension and damage
(DIESEL) I I I I I I I I I I I I I I I I I I I I
* Exhaust system
I I - I - I - I - I - I - I - I - I - I Engine coolant concentration (HFV6) - I - I - I - I - I - I - I - I - I - R (C24SE) - I - I - I - I - R - I - I - I - I - R (DESEL) - I - I - I - I - I - I - I - I - I - I Engine coolant
(4JJ1 (Standard Output),
4JJ1 (High Output)) Change every 2 years
Cooling system for water leakage - I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clogs or damage - I - I - I - I - I - I - I - I - I - I
Timing belt
(C24SE) - - - - - - - - - - - - - - - I - - - - Replace every 120,000km Timing belt (6VE1) Replace every 160,000km

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TO MODEL INDEX
ISUZU KB P190 2007

MAINTENANCE AND LUBRICATION 0B-3


I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate

SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
CLUTCH
Clutch fluid I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and free play I I - I - I - I - I - I - I - I - I - I TRANSMISSION OR TRANSMISSION
W ITH TRANSFER CASE

* Automatic transmission fluid (HFV6)
- - I - - I - - I - - I - - I - - I - R (4JH1-TC, 4JJ1 (Standard Output),
4JJ1 (High Output)) - - - I - - - I - - - I - - - I - - - I
* Transfer case oil
- - - I - - - I - - - I - - - I - - - I * Manual transmission fluid - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Gear control mechanism for
looseness - - - I - - - I - - - I - - - I - - - I

PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear
- I - I - I - I - I - I - I - I - I - I Universal joints and sliding sleeve
(4W D) - L - L - L - L - L - L - L - L - L - L

FRONT AND REAR AXLE * Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I Front axle shaft boot for damage - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I STEERING Power steering fluid I I I I I I I R I I I I I I I R I I I I Oil leakage I I I I I I I I I I I I I I I I I I I I * Steering system for looseness or
damage - I - I - I - I - I - I - I - I - I - I
Power steering hose
- I - I - I - I - I - I - I - R - I - I Steering wheel play I I I I I I I I I I I I I I I I I I I I Steering function I I I I I I I I I I I I I I I I I I I I Right and left turning radius - - - I - - - I - - - I - - - I - - - I W heel alignment - - - I - - - I - - - I - - - I - - - I Joint ball for oil leakage or damage - I - I - I - I - I - I - I - I - I - I Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I SERVICE BRAKES Brake fluid - - - I - - - I - - - I - - - I - - - I Brake system for fluid leakage I I I I I I I I I I I I I I I I I I I I Brake function I I I I I I I I I I I I I I I I I I I I * Rear brake lining and drum wear - I - I - I - I - I - I - I - I - I - I * Front disc brake pads and discs wear - I - I - I - I - I - I - I - I - I - I Brake pedal travel and free play I I I I I I I I I I I I I I I I I I I I Pipes and hoses loose connections
or damage I I - I - I - I - I - I - I - I - I - I


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TO MODEL INDEX
ISUZU KB P190 2007

0B-4 MAINTENANCE AND LUBRICATION


I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate
SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100(Use odometer reading × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60or months whichever
comes first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
PARKING BRAKE
Parking brake function I I I I I I I I I I I I I I I I I I I I Parking brake lever travel I I I I I I I I I I I I I I I I I I I I Cables for looseness or damage
and guide for damage I I I I I I I I I I I I I I I I I I I I
Ratchet for wear or damage - I - I - I - I - I - I - I - I - I - I
SUSPENSION Leaf / Coil / Torsion bar springs for
damage I I - I - I - I - I - I - I - I - I - I
Mount for looseness or damage I I - I - I - I - I - I - I - I - I - I Shock absorbers for oil leakage - I - I - I - I - I - I - I - I - I - I Shock absorber mount for looseness - I - I - I - I - I - I - I - I - I - I Rubber bushes of suspension for
wear or damage - I - I - I - I - I - I - I - I - I - I
Spring action for loss of balance
due to weakening - - - I - - - I - - - I - - - I - - - I
Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I
WHEELS W heel nuts T T - T - T - T - T - T - T - T - T - T W heel disc for damage I I - I - I - I - I - I - I - I - I - I Front hub bearing grease - - - - - R - - - - - R - - - - - R - - Front and rear hub bearing for
looseness - I - I - I - I - I - I - I - I - I - I
Tire pressure and damage I I - I - I - I - I - I - I - I - I - I Tire rotation
(Rotate as required) OTHERS Bolts and nuts on chassis and body I I - I - I - I - I - I - I - I - I - I Lube front free – wheeling hubs - - - - - L - - - - - L - - - - - L - -


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TO MODEL INDEX
ISUZU KB P190 2007

MAINTENANCE AND LUBRICATION 0B-5
MAINTENANCE SCHEDULE (For EUROPE)
Items followed by an asterisk (*) require more frequent maintenance if the vehicle is driven under severe conditions.
Replace the fuel filter (**Mark) when the fuel filter indicator light is lit.
Refer to "SEVERE CONDITIONS MAINTENANCE SCHEDULE."
Diesel Engine model (ACEA B2 specification engine oil)

I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate

SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
DIESEL ENGINE * Engine oil - R - R - R - R - R - R - R - R - R - R* Engine oil filter - - - R - - - R - - - R - - - R - - - ROil leakage and contamination I I I I I I I I I I I I I I I I I I I I Idling speed and acceleration I I I I I I I I I I I I I I I I I I I I Fan belt tension and damage I I I I I I I I I I I I I I I I I I I I Exhaust system I I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clog of damage - I I I I I I I I I I I I I I I I I I I
Valve clearance
- - - A - - - A - - - A - - - A - - - A * Air cleaner element I I I I I I I R I I I I I I I R I I I I ** Fuel filter Replace the fuel filter when the fuel filter indicator light is lit. Engine coolant concentration - I - I - I - I - I - I - I - I - I - I Cooling system for water leakage - I - I - I - I - I - I - I - I - I - I CLUTCH Clutch fluid I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and play I I - I - I - I - I - I - I - I - I - I TRANSMISSION OR TRANSMISSION
W ITH TRANSFER CASE

* Manual transmission with fluid - R - I - - - R - - - I - - - R - - - I * Transfer case oil (MT) - - - I - - - I - - - I - - - I - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Gear control mechanism for
looseness - - - I - - - I - - - I - - - I - - - I
* Automatic transmission fluid - - - I - - - I - - - I - - - I - - - I * Transfer case oil (AT)
- - - I - - - - - - - I - - - - - - - I PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear - I - I - I - I - I - I - I - I - I - I Universal joints and sliding sleeve (4W D) - L - L - L - L - L - L - L - L - L - L
FRONT AND REAR AXLE * Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I
Front axle shaft boot for damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

0B-6 MAINTENANCE AND LUBRICATION


I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate
SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
STEERING Power steering fluid I I I I I I I R I I I I I I I R I I I I Oil leakage I I I I I I I I I I I I I I I I I I I I * Steering system for looseness or
damage - I - I - I - I - I - I - I - I - I - I
Power steering hose
- I - I - I - I - I - I - I - R - I - I Steering wheel play I I I I I I I I I I I I I I I I I I I I Steering function I I I I I I I I I I I I I I I I I I I I Right and left turning radius - - - I - - - I - - - I - - - I - - - I W heel alignment - - - I - - - I - - - I - - - I - - - I Joint ball for oil leakage or damage
- I - I - I - I - I - I - I - I - I - I
Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I

SERVICE BRAKES Brake fluid - - - I - - - I - - - I - - - I - - - I Brake system for fluid leakage I I I I I I I I I I I I I I I I I I I I Brake function I I I I I I I I I I I I I I I I I I I I * Front disc brake pads and discs wear - I - I - I - I - I - I - I - I - I - I * Rear brake lining and drum wear - I - I - I - I - I - I - I - I - I - I Brake pedal travel and play I I I I I I I I I I I I I I I I I I I I Pipes and hoses for loose
connections or damage I I - I - I - I - I - I - I - I - I - I

PARKING BRAKE Parking brake function I I I I I I I I I I I I I I I I I I I I Parking brake lever travel I I I I I I I I I I I I I I I I I I I I Cables for looseness or damage and
guide for damage I I I I I I I I I I I I I I I I I I I I
Ratchet for wear or damage
- I - I - I - I - I - I - I - I - I - I SUSPENSION Leaf/Coil/Torsion bar springs for
damage I I - I - I - I - I - I - I - I - I - I
Mount for looseness or damage
I I - I - I - I - I - I - I - I - I - I Shock absorbers for oil leakage - I - I - I - I - I - I - I - I - I - I Shock absorbers mount for
looseness - I - I - I - I - I - I - I - I - I - I
Rubber bushes of suspension wear
or damage - I - I - I - I - I - I - I - I - I - I
Spring action for loss of balance due
to weakening - - - I - - - I - - - I - - - I - - - I
Joint ball rubber boot for damage
- I - I - I - I - I - I - I - I - I - I WHEELS W heel nuts T T - T - T - T - T - T - T - T - T - T W heel disc for damage I I - I - I - I - I - I - I - I - I - I Front hub bearing grease
- - - - - R - - - - - R - - - - - R - - Front and rear hub bearings for
looseness - I - I - I - I - I - I - I - I - I - I
Tire pressure and damage I I - I - I - I - I - I - I - I - I - I Tire rotation
Rotate as required OTHERS Bolts and nuts on chassis and body I I - I - I - I - I - I - I - I - I - I Lube front free - wheeling hubs - - - - - L - - - - - L - - - - - L - -


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TO MODEL INDEX
ISUZU KB P190 2007

MAINTENANCE AND LUBRICATION 0B-7

Diesel Engine model (Engine oil that meet or exceeds ACEA B3 specification)
I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate

SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
DIESEL ENGINE * Engine oil - - - R - - - R - - - R - - - R - - - R*
Engine oil filter
- - - R - - - R - - - R - - - R - - - R
Oil leakage and contamination I I I I I I I I I I I I I I I I I I I I Idling speed and acceleration I I I I I I I I I I I I I I I I I I I I Fan belt tension and damage I I I I I I I I I I I I I I I I I I I I Exhaust system I I - I - I - I - I - I - I - I - I - I All hoses and pipes in engine
compartment for clog of damage - - - I - - - I - - - I - - - I - - - I
Valve clearance
- - - A - - - A - - - A - - - A - - - A * Air cleaner element I I I I I I I R I I I I I I I R I I I I ** Fuel filter Replace the fuel filter when the fuel filter indicator light is lit. Engine coolant concentration - - - I - - - I - - - I - - - I - - - I Cooling system for water leakage - - - I - - - I - - - I - - - I - - - I CLUTCH Clutch fluid I I - I - I - I - I - I - I - I - I - I Clutch pedal travel and play I I - I - I - I - I - I - I - I - I - I TRANSMISSION OR TRANSMISSION
W ITH TRANSFER CASE

* Manual transmission with fluid - - - R - - - I - - - R - - - I - - - I * Transfer case oil (MT) - - - R - - - I - - - R - - - I - - - I Oil leakage - - - I - - - I - - - I - - - I - - - I Gear control mechanism for
looseness - - - - - - - - - - - I - - - - - - - -
* Automatic transmission fluid - - - I - - - I - - - I - - - I - - - I * Transfer case oil (AT)
- - - R - - - I - - - R - - - I - - - R PROPELLER SHAFT Loose connections - I - I - I - I - I - I - I - I - I - I * Universal joints and splines for wear - I - I - I - I - I - I - I - I - I - I Universal joints and sliding sleeve
(4W D) - L - L - L - L - L - L - L - L - L - L
FRONT AND REAR AXLE
* Differential gear oil (Front and rear) - R - I - - - R - - - I - - - R - - - I Oil leakage I I I I I I I I I I I I I I I I I I I I Shift on the fly system gear oil I - - I - - - I - - - I - - - I - - - I Front axle shaft boot for damage - - - I - - - I - - - I - - - I - - - I Axle case for distortion or damage - - - I - - - I - - - I - - - I - - - I Axle shafts for distortion or damage - - - I - - - I - - - I - - - I - - - I STEERING Power steering fluid I I I I I I I R I I I I I I I R I I I I Oil leakage I I I I I I I I I I I I I I I I I I I I * Steering system for looseness or
damage - I - I - I - I - I - I - I - I - I - I
Power steering hose
- I - I - I - I - I - I - I - R - I - I Steering wheel play I I I I I I I I I I I I I I I I I I I I Steering function I I I I I I I I I I I I I I I I I I I I Right and left turning radius - - - I - - - I - - - I - - - I - - - I W heel alignment - - - I - - - I - - - I - - - I - - - I Joint ball for oil leakage or damage - I - I - I - I - I - I - I - I - I - I Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I


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TO MODEL INDEX
ISUZU KB P190 2007

0B-8 MAINTENANCE AND LUBRICATION


I : Inspect and correct or replace as necessary A : Adjust
R : Replace or change T : Tighten to specified torque L : Lubricate
SERVICE INTERVAL: × 1,000 km 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
(Use odometer reading or × 1,000 miles 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60
months whichever comes
first)
or months 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120
SERVICE BRAKES Brake fluid - - - I - - - I - - - I - - - I - - - I Brake system for fluid leakage I I I I I I I I I I I I I I I I I I I I Brake function I I I I I I I I I I I I I I I I I I I I * Front disc brake pads and discs wear - I - I - I - I - I - I - I - I - I - I * Rear brake lining and drum wear - I - I - I - I - I - I - I - I - I - I Brake pedal travel and play I I I I I I I I I I I I I I I I I I I I Pipes and hoses for loose
connections or damage I I - I - I - I - I - I - I - I - I - I

PARKING BRAKE Parking brake function I I I I I I I I I I I I I I I I I I I I Parking brake lever travel I I I I I I I I I I I I I I I I I I I I Cables for looseness or damage and
guide for damage I I I I I I I I I I I I I I I I I I I I
Ratchet for wear or damage - I - I - I - I - I - I - I - I - I - I
SUSPENSION Leaf/Coil/Torsion bar springs for
damage I I - I - I - I - I - I - I - I - I - I
Mount for looseness or damage I I - I - I - I - I - I - I - I - I - I Shock absorbers for oil leakage - I - I - I - I - I - I - I - I - I - I Shock absorbers mount for
looseness - I - I - I - I - I - I - I - I - I - I
Rubber bushes of suspension wear
or damage - I - I - I - I - I - I - I - I - - - I
Spring action for loss of balance due
to weakening - - - I - - - I - - - I - - - I - I - I
Joint ball rubber boot for damage - I - I - I - I - I - I - I - I - I - I
WHEELS W heel nuts T T - T - T - T - T - T - T - T - T - T W heel disc for damage I I - I - I - I - I - I - I - I - I - I Front hub bearing grease - - - - - R - - - - - R - - - - - R - - Front and rear hub bearings for
looseness - I - I - I - I - I - I - I - I - I - I
Tire pressure and damage I I - I - I - I - I - I - I - I - I - I Tire rotation
(Rotate as required) OTHERS Bolts and nuts on chassis and body - - - I - - - I - - - I - - - I - - - I Lube front free - wheeling hubs - - - - - - - L - - - - - - - L - - - -


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TO MODEL INDEX
ISUZU KB P190 2007

6E-30 Engine Control System (4JH1)
Diagnostic Information And Prosedures
Engine Control System Check Sheet





ENGINE CONTROL SYSTEM CHECK SHEET Inspectors Name
Customer’s Name Model & Model Year
Driver’s Name Chassis No.
Date Vehicle Brought In Engine No.
License No. Odometer Reading Km/miles

□ Engine Does
Not Run □
Engine does not crank
□No initial combustion
□ No complete combustion
□
Hard Start
□ Engine cranks slowly
□Other ( )
□
Abnormal idling speed
□High idling speed ( RPM)
□ Low idling speed ( RPM)
□
Rough idling □
Incorrect Idle
□ Other ( )
□
Hesitation, sag, stumble
□Surge, chuggles
□ Cut out, misses
□
Lack of power, sluggishness, sponginess □
Poor
Driveability □ Other ( )

□ Soon after starting
□After accelerator pedal depressed
Engine Stall
□ During A/C operation
□After accelerator pedal released
□ Shifting from N to D □

□ Other ( )
□
Black smoke
□White smoke
□ Poor fuel economy
□
Fuel knock, combustion noise
Problem Symptoms
□
Others
□ Other ( )
Dates problem occurred
□
Constant
□Intermittently ( times per day/month)
□ Once only Problem frequency
□ Other (
)
□ Fine
□Cloudy
□Rainy
□ Snow Weather
□ Various/Other (
)
□ Hot (approx. )
□Warm
□Cool
□ Cold (approx. )Outside
Temperature □ Any temperature
□
Highway
□Suburbs
□City area
□ Uphill Place
□ Downhill
□Rough road
□Other (
)
□ Over (approx. tons)
□No load
Load Condition
□ Other (approx. tons)

□ Cold
□Warming up
□After warming up
□ Any temperature Engine
Temperature □ Other ( )
□
Starting
□Just after starting ( Min.)
□ Idling
□
Racing
□Driving
□Constant speed
□ Acceleration
□
Deceleration
□A/C switch On/Off Engine Operation
□ Other ( )
Fuel Amount
□ Full
□Above 1/2
□Below 1/2
□ Near empty
Condition When Problem Occurs
Fuel
Bland
Condition of MIL
□Remains On
□Intermittently turns On
□ Does not turn On
Present Code
□Nothing
□P Code & Symptom Code
No. ( )Diagnostic Trouble
Code (DTC) or Flash
Code History Code □Nothing
□P Code & Symptom Code
No. ( )

Other Additional
Condition


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ISUZU KB P190 2007

Engine Control System (4JH1) 6E-271
Checks Action
Engine Mechanical Checks Inspect the engine mechanical for the following conditions. Refer to the Engine
Mechanical section.
• Inspect for poor cylinder compression. Proper compression is more than 2100 kPa
(309 psi).
• Inspect for incorrect basic engine parts such as camshaft, cylinder head, pistons,
etc.
• Inspect for any excessive oil entering combustion chamber.
Additional Checks •
Inspect the EGR system operating correctly.
• Inspect other possible causes that can make similar noise such as loose component
parts, bracket, mount and weak clutch damper spring.


Poor Fuel Economy
Checks Action
DEFINITION:Fuel economy, as measured by actual road tests and several tanks of fuel, is noticeably lower than expected.
Also, the economy is noticeably lower than it was on this vehicle at one time, as previously shown by actual road tests.
Preliminary Checks • Remove the air cleaner and check for dirt, or for air ducts being plugged or
restricted. Replace as necessary.
• Inspect the driving habits of the owner.
• Is the A/C ON full time, defroster mode ON?
• Are the tires at the correct pressure?
• Are the tire sizes changed?
• Are excessively heavy loads being carried?
• Is the acceleration too much, too often?
• Inspect for clutch slip.
• Inspect brake drag.
• Inspect dive belt tension.
• Inspect for a proper transmission shift pattern and down shift operation (A/T only).
• Inspect the fuel quality (cetane index).
• Inspect the engine oil level and quality.
• Suggest to the owner to fill the fuel tank and recheck the fuel economy.
• Suggest to the driver to read the Important Facts on Fuel Economy in the Owner
Manual.
• Inspect the odometer is correctly operated.
• Inspect the Service Bulletins for ECM software updates.
Sensor Checks Inspect the engine control sensors for the following conditions. Refer to the scan tool
Data List in this section.
• Use the scan tool to compare the Engine Coolant Temperature (ECT) with the Intake
Air Temperature (IAT) and Fuel Temperature (FT) on a cold engine condition. If the
difference among temperature reading is more than 5°C (9°F) on a cold engine,
check for high resistance on the low reference circuit and signal circuit or for a
skewed sensor.
Notice: The mass air flow (MAF) sensor is heated and as a result the IAT sensor may
indicate a higher than normal intake air temperature if the ignition switch is being ON.
FT sensor is internal to the PCU and it is part of the fuel injection pump assembly.
Fuel System Checks Inspect the fuel system for the following conditions. Refer to the Fuel System section.
• Inspect the fuel type and quality.
• Check fuel leak.
Cooling System Checks Inspect the cooling system for the following conditions. Refer to the Cooling System
Section.
• Inspect the engine coolant level.
• Inspect the engine thermostat for always being open or for the wrong heat range.
• Inspect the engine cooling fan for always being ON.

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ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-341
Poor Fuel Economy
ChecksAction
Definition:
Fuel economy, as measured by actual road tests and several tanks of fuel, is noticeably lower than expected. Also, the
economy is noticeably lower than it was on this vehicle at one time, as previously shown by actual road tests.
Preliminary Checks • Remove the air cleaner and check for dirt, or for air ducts being plugged or
restricted. Replace as necessary.
• Inspect the driving habits of the owner.
• Is the A/C ON full time, defroster mode ON?
• Are the tires at the correct pressure?
• Are the tire sizes changed?
• Are excessively heavy loads being carried?
• Is the acceleration too much, too often?
• Inspect for clutch slip.
• Inspect brake drag.
• Inspect dive belt tension.
• Inspect for a proper transmission shift pattern and down shift operation.
• Inspect the fuel quality (cetane index).
• Inspect the engine oil level and quality.
• Suggest to the owner to fill the fuel tank and recheck the fuel economy.
• Inspect the odometer is correctly operated.
• Inspect the Scan Tool Data List in this section.
• Inspect the Service Bulletin.
Sensor Checks Inspect the engine control sensors for the following conditions. Refer to the Scan Tool
Data List in this section.
• Compare the Coolant Temperature with the Intake Air Temperature (IAT) and Fuel Temperature (FT) parameters on a cold engine condition. If the difference among
temperature reading is more than 5 °C (9 °F) on a cold engine, check for high
resistance in each circuit or for a skewed sensor.
Notice: The mass air flow (MAF) sensor is heated and as a result the IAT may indicate
a higher than normal intake air temperature if the ignition switch is being ON.
Fuel System Checks Inspect the fuel system for the following conditions. Refer to the Fuel System section.
• Fuel type and quality.
• Check fuel leak.
Cooling System Checks Inspect the cooling system for the following conditions. Refer to the Cooling System
Section.
• Engine coolant level.
• Engine thermostat for always being open or for the wrong heat range.
• Engine cooling fan for always being ON.

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ISUZU KB P190 2007