Usually, a judgement can be based upon the movement of the
tachometer pointer, and the vibration transmitted to the steering wheel,
shift lever, body, etc.

Incorrect idle
speed

The engine doesn't idle at the correct speed.

Engine stall (die
out)

The engine stalls when the foot is taken from the accelerator pedal,
regardless of whether the vehicle is moving or not.

Engine stall (pass
out)

The engine stalls when the accelerator pedal is depressed.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-50

At driving

Hesitation Sag

"Hesitation" is the delay in
response of the vehicle speed
(engine speed). This occurs
when the accelerator is
depressed in order to accelerate
from the speed at which the
vehicle is now traveling, or a
temporary drop in vehicle speed
(engine speed) during such
acceleration.
Serious hesitation is called
"sag".

Poor acceleration Poor acceleration is inability to obtain an acceleration corresponding to

the degree of throttle opening, even though acceleration is smooth. Also
the inability to reach maximum speed.

Stumble

Engine speed increase is
delayed when the accelerator
pedal is initially depressed for
acceleration.

Shock

The feeling of a comparatively large impact or vibration when the engine
is accelerated or decelerated.

Surge

This is slight acceleration and deceleration feel usually felt during
steady, light throttle cruise. Most notable under light loads.

Knocking

A sharp sound during driving, which sounds like a hammer striking the
cylinder walls. It makes poor driveability.

At stopped

Run on
("Dieseling")

The condition in which the engine continues to run after the ignition
switch is turned to the "LOCK" (OFF) position. Also called "dieseling".

ITEMS

SYMPTOM

AKX01361

Vehicle
speed

Time

Normal

Hesitation

Sag

Initial
accelerator
pedal
depression

AKX01362

Stumble

Idling

Vehicle
speed

Time

Normal

Initial
accelerator
pedal
depression

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-51

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0011: Intake Variable Valve Timing System Target Error

TECHNICAL DESCRIPTION

• The ECM checks the variable valve timing sys-

tem for malfunction.

DESCRIPTIONS OF MONITOR METHODS

The phase angle of the intake camshaft is higher

than the specified value.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Camshaft position sensor

• Crankshaft position sensor

• Engine coolant temperature sensor

• Throttle position sensor

• Engine oil control valve

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-52

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

• More than 20 seconds have passed since the

engine starting sequence was completed.

• Engine speed is 1,188 r/min or more.

• Engine coolant temperature is higher than 76° C

(169

° F).

Judgment Criterion

• The phase angle of the intake camshaft is 5

degrees or more for 5 seconds.

FAIL-SAFE AND BACKUP FUNCTION

• None

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function

− OBD-II Drive Cycle −

Pattern 20

P.13A-9

TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are:)

• Intake engine oil control valve failed.

• Oil passage of variable valve timing control sys-

tem clogged.

• Intake variable valve timing sprocket operation

mechanism stuck.

• ECM failed.

AK704222

Start

Yes

|Cam angle-target|

> 5˚CA

Continuous

failure for 5secs

Malfunction

End

Good

Monitoring
conditions

Cam angle: Intake valve open timing (intake side)
Exhaust valve close timing (exhaust side)

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