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TROUBLE DIAGNOSIS
EC-929
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
COOLING FAN
[LOW/HI/OFF]
×
● Indicates the control condition of the
cooling fans (determined by ECM
according to the input signal).
LOW ... Operates at low speed.
HI ... Operates at high speed.
OFF ... Stopped
EGR VOL CON/V [step] ×
● Indicates the EGR volume control value
computed by the ECM according to the
input signals.
● The opening becomes larger as the
value increases.
INT/A VOLUME [mg/]
● The intake air volume computed from the
mass air flow sensor signal is displayed.
BARO SEN [kPa] ××
● The barometric pressure (determined by
the signal voltage from the absolute
pressure sensor built into the ECM) is
displayed.
INT/M PRES SE [kPa]
● Turbocharger boost (determined by the
signal voltage from the turbocharger
boost sensor) is displayed.
CYL COUNT [1/2/3/4]
● The cylinder being injected is displayed.
1 ... Cylinder No.1 is injected.
2 ... Cylinder No.2 is injected.
3 ... Cylinder No.3 is injected.
4 ... Cylinder No.4 is injected.
Voltage [V]
Voltage, frequency, duty cycle or pulse
width measured by the probe.
Only “#” is displayed if item is
unable to be measured.
Figures with “#”s are temporary
ones.
They are the same figures as an
actual piece of data which was
just previously measured. [Hz] or
[%]
Frequency [msec], [Hz] or
[%]
DUTY-HI
DUTY-LOW
PLS WIDTH-HI
PLS WIDTH-LOW
MONITOR ITEM
ECM
INPUT
SIGNAL
MAIN
SIG-
NALS
CONDITION SPECIFICATION
TEST ITEM CONDITION JUDGEMENT CHECK ITEM (REMEDY)
POWER BAL-
ANCE
● Engine: After warming up, idle the
engine.
● A/C switch: OFF
● Shift lever: N
● Cut off each injector signal one at
a time using CONSULT-II
Engine runs rough or dies.
● Harness and connectors
● Compression
● Fuel injector
COOLING FAN *
● Ignition switch: ON
● Operate the cooling fan at LOW,
HI speed and turn OFF using
CONSULT-II.
Cooling fan moves at LOW, HI
speed and stops.
● Harness and connector
● Cooling fan motor
● Cooling fan relay
ENG COOLANT
TEMP
● Engine: Return to the original
trouble condition
● Change the engine coolant tem-
perature using CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
● Harness and connectors
● Engine coolant temperature sen-
sor
● Fuel injector
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