TROUBLE DIAGNOSIS
EC-1279
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
WORK SUPPORT MODE
Work Item
*: This function is not necessary in the usual service procedure.
SELF-DIAGNOSTIC MODE
Self Diagnostic Item
Regarding items of DTC and 1st trip DTC, refer to
EC-1185, "INDEX FOR DTC"
.
Freeze Frame Data and 1st Trip Freeze Frame Data
WORK ITEM
CONDITION
USAGE
TP SW/TP SEN IDLE POSI ADJ
●
FOLLOW THE BASIC INSPECTION INSTRUCTION IN
THE SERVICE MANUAL.
When adjusting the idle throttle
position
IGNITION TIMING ADJ
●
IGNITION TIMING FEEDBACK CONTROL WILL BE
HELD BY TOUCHING “START”. AFTER DOING SO,
ADJUST IGNITION TIMING WITH A TIMING LIGHT BY
TURNING THE CAMSHAFT POSITION SENSOR.
When adjusting target ignition tim-
ing
After adjustment, confirm target
ignition timing with a timing light
by turning the distributor.
FUEL PRESSURE RELEASE
●
FUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.
When releasing fuel pressure
from fuel line
SELF-LEARNING CONT
●
THE COEFFICIENT OF SELF-LEARNING CONTROL
MIXTURE RATIO RETURNS TO THE ORIGINAL COEF-
FICIENT.
When clean the coefficient of self-
learning control valve
EVAP SYSTEM CLOSE
OPEN THE VACUUM CUT VALVE BYPASS VALVE AND
CLOSE THE EVAP CANISTER VENT CONTROL VALVE IN
ORDER TO MAKE EVAP SYSTEM CLOSE UNDER THE
FOLLOWING CONDITIONS.
●
IGN SW ON
●
ENGINE NOT RUNNING
●
AMBIENT TEMPERATURE IS ABOVE 0
°C (32°F).
●
NO VACUUM AND NO HIGH PRESSURE IN EVAP SYS-
TEM
●
FUEL TANK TEMP. IS MORE THAN 0
°C (32°F).
●
WITHIN 10 MINUTES AFTER STARTING “EVAP SYS-
TEM CLOSE”
●
WHEN TRYING TO EXECUTE “EVAP SYSTEM CLOSE”
UNDER THE CONDITION EXCEPT ABOVE, CONSULT-
II WILL DISCONTINUE IT AND DISPLAY APPROPRIATE
INSTRUCTION.
NOTE:
WHEN STARTING ENGINE, CONSULT-II MAY DISPLAY
“BATTERY VOLTAGE IS LOW. CHARGE BATTERY”,
EVEN IN USING CHARGED BATTERY.
When detecting EVAP vapor leak
point of EVAP system
TARGET IDLE RPM ADJ*
SET ENGINE SPEED AT THE SPECIFIED VALUE UNDER
THE FOLLOWING CONDITIONS.
●
ENGINE WARMED UP
●
NO LOAD
When adjusting initial ignition tim-
ing and idle speed
Freeze frame data
item *
Description
DIAG TROUBLE
CODE
[PXXXX]
●
The engine control component part/control system has a trouble code, it is displayed as “PXXXX”. (Refer
to
EC-1185, "INDEX FOR DTC"
.)
FUEL SYS-B1
●
“Fuel injection system status” at the moment a malfunction is detected is displayed.
●
One mode in the following is displayed.
Mode 2: Open loop due to detected system malfunction
Mode 3: Open loop due to driving conditions (power enrichment, deceleration enleanment)
Mode 4: Closed loop - using oxygen sensor(s) as feedback for fuel control
Mode 5: Open loop - has not yet satisfied condition to go to closed loop
FUEL SYS-B2