Nissan Terrano r20e. Manual — part 173
SELF-DIAGNOSTIC MODE
Regarding items detected in “SELF-DIAG RESULTS” mode, refer to “TROUBLE DIAGNOSIS — INDEX”,
EC-293.
DATA MONITOR MODE
Monitored item
[Unit]
ECM
input
signals
Main
signals
Description
Remarks
CKPS
⋅
RPM
(TDC) [rpm]
q q
I
The engine speed computed from the
crankshaft position sensor (TDC) signal
is displayed.
CMPS
⋅
RPM -
PUMP [rpm]
q q
I
The engine speed computed from the
needle lift sensor signal is displayed.
COOLAN TEMP/S
[°C] or [°F]
q q
I
The engine coolant temperature (deter-
mined by the signal voltage of the engine
coolant temperature sensor) is displayed.
I
When the engine coolant temperature
sensor is open or short-circuited, ECM
enters fail-safe mode. The same data as
the fuel temperature is displayed.
VHCL SPEED SE
[km/h] or [mph]
q q
I
The vehicle speed computed from the
vehicle speed sensor signal is displayed.
FUEL TEMP SEN
[°C] or [°F]
q q
I
The fuel temperature (determined by the
signal voltage of the fuel temperature
sensor) is displayed.
ACCEL POS SEN [V]
q q
I
The accelerator position sensor signal
voltage is displayed.
OFF ACCEL POS
[ON/OFF]
q q
I
Indicates [ON/OFF] condition from the
accelerator position switch signal.
I
Signal at approximately 9° opened.
C/SLEEV POS/S [V]
q q
I
The control sleeve position sensor signal
voltage is displayed.
BATTERY VOLT [V]
q q
I
The power supply voltage of ECM is dis-
played.
START SIGNAL
[ON/OFF]
q q
I
Indicates [ON/OFF] condition from the
starter signal.
I
After starting the engine, [OFF] is dis-
played regardless of the starter signal.
AIR COND SIG
[ON/OFF]
q q
I
Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
BRAKE SW
[ON/OFF]
q
I
Indicates [ON/OFF] condition of the stop
lamp switch.
BRAKE SW2
[ON/OFF]
q
I
Indicates [ON/OFF] condition of the
brake switch 2.
IGN SW
[ON/OFF]
q q
I
Indicates [ON/OFF] condition from igni-
tion switch.
MAS AIR/FL SE [V]
q q
I
The signal voltage of the mass air flow
sensor is displayed.
I
When the engine is stopped, a certain
value is indicated.
ACT INJ TIMG [°]
q
I
The actual injection timing angle deter-
mined by the ECM (an approximate aver-
age angle between injection start and
end from TDC) is displayed.
TARGET F/INJ
[mm
3
/stroke]
q
I
The target fuel injection quantity (deter-
mined by the ECM according to the input
signal) is indicated.
NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
TD27Ti
CONSULT-II (Cont’d)
EC-329
Monitored item
[Unit]
ECM
input
signals
Main
signals
Description
Remarks
FUEL CUT S/V
[ON/OFF]
I
The control condition of the fuel cut sole-
noid valve (determined by ECM accord-
ing to the input signal) is indicated.
I
OFF ... Fuel cut solenoid valve is not
operating.
ON ... Fuel cut solenoid valve is operat-
ing.
I
When the fuel cut solenoid valve is not
operating, fuel supply is shut off.
AIR COND RLY
[ON/OFF]
q
I
The air conditioner relay control condition
(determined by ECM according to the
input signal) is indicated.
GLOW RLY
[ON/OFF]
q
I
The glow relay control condition (deter-
mined by ECM according to the input
signal) is displayed.
EGRC SOL/V A
[ON/OFF]
I
The control condition of the EGRC-sole-
noid valve A (determined by ECM
according to the input signal) is indicated.
I
OFF ... EGRC-solenoid valve A is not
operating.
ON ... EGRC-solenoid valve A is operat-
ing.
EGRC SOL/V B
[ON/OFF]
I
The control condition of the EGRC-sole-
noid valve B (determined by ECM
according to the input signal) is indicated.
I
OFF ... EGRC solenoid valve B is not
operating.
ON ... EGRC-solenoid valve B is operat-
ing.
THROT RLY
[ON/OFF]
I
The control condition of the throttle con-
trol solenoid valve (determined by ECM
according to the input signal) is indicated.
I
OFF ... Throttle control solenoid valve is
not operating.
ON ... Throttle control solenoid valve is
operating.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
TD27Ti
CONSULT-II (Cont’d)
EC-330
ACTIVE TEST MODE
TEST ITEM
CONDITION
JUDGEMENT
CHECK ITEM (REMEDY)
TARGET F/INJ
I
Engine: Return to the original
trouble condition.
I
Fix the target injection quantity
using CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM
I
Control sleeve position sensor.
FUEL CUT SOL/V
I
Ignition switch: ON
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
EGRC SOL/V A
I
Ignition switch: ON
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
EGRC SOL/V B
I
Ignition switch: ON
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
THROT CONT
SOL/V
I
Ignition switch: ON
I
Turn solenoid valve “ON” and
“OFF” with the CONSULT-II and
listen to operating sound.
Solenoid valve makes an operating
sound.
I
Harness and connector
I
Solenoid valve
GLOW RLY
I
Ignition switch: ON (Engine
stopped)
I
Turn the glow relay “ON” and
“OFF” using CONSULT-II and
listen to operating sound.
Glow relay makes the operating
sound.
I
Harness and connector
I
Glow relay
INJ TIMING
I
Engine: Return to the original
trouble condition
I
Retard the injection timing using
CONSULT-II.
If trouble symptom disappears, see
CHECK ITEM.
I
Adjust initial injection timing
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
TD27Ti
CONSULT-II (Cont’d)
EC-331
REAL TIME DIAGNOSIS IN DATA MONITOR MODE
CONSULT-II has two kinds of triggers and they can be selected by
touching “SETTING” in “DATA MONITOR” mode.
1) “AUTO TRIG” (Automatic trigger):
I
The malfunction will be identified on the CONSULT-II screen in
real time.
In other words, DTC will be displayed if the malfunction is
detected by ECM.
At the moment a malfunction is detected by ECM, “MONITOR”
in “DATA MONITOR” screen is changed to “Recording Data ...
xx%” as shown at left, and the data after the malfunction detec-
tion is recorded. Then when the percentage reached 100%,
“REAL-TIME DIAG” screen is displayed. If “STOP” is touched
on the screen during “ Recording Data ... xx%”, “REAL-TIME
DIAG” screen is also displayed.
The recording time after the malfunction detection and the
recording speed can be changed by “TRIGGER POINT” and
“Recording
Speed”.
Refer
to
CONSULT-II
OPERATION
MANUAL.
2) “MANU TRIG” (Manual trigger):
I
DTC will not be displayed automatically on CONSULT-II screen
even though a malfunction is detected by ECM.
DATA MONITOR can be performed continuously even though
a malfunction is detected.
Use these triggers as follows:
1) “AUTO TRIG”
I
While trying to detect the DTC by performing the “DTC Confir-
mation Procedure”, be sure to select to “DATA MONITOR
(AUTO TRIG)” mode. You can confirm the malfunction at the
moment it is detected.
I
While narrowing down the possible causes, CONSULT-II
should be set in “DATA MONITOR (AUTO TRIG)” mode, espe-
cially in case the incident is intermittent.
When you are inspecting the circuit by gently shaking (or twist-
ing) the suspicious connectors, components and harness in the
“DTC Confirmation Procedure”, the moment a malfunction is
found the DTC will be displayed. Refer to GI-22, “Incident Simu-
lation Tests”.
2) “MANU TRIG”
I
If the malfunction is displayed as soon as “DATA MONITOR” is
selected, reset CONSULT-II to “MANU TRIG”. By selecting
“MANU TRIG” you can monitor and store the data. The data
can be utilized for further diagnosis, such as a comparison with
the value for the normal operating condition.
SEF373Y
SEF707X
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
TD27Ti
CONSULT-II (Cont’d)
EC-332
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