Nissan Terrano r20e. Manual — part 177
Major Sensor Reference Graph in Data Monitor
Mode
The following are the major sensor reference graphs in “DATA MONITOR” mode.
(Select “HI SPEED” in “DATA MONITOR” with CONSULT-II.)
ACCEL POS SEN, C/SLEEV POS/S, ACT INJ TIMG
Below is the data for “ACCEL POS SEN”, “C/SLEEV POS/S” and “ACT INJ TIMG” when revving engine quickly
up to 3,000 rpm under no load after warming up engine sufficiently.
Each value is for reference, the exact value may vary.
NEF766
TROUBLE DIAGNOSES
TD27Ti
EC-345
ECM Terminals and Reference Value
PREPARATION
Perform all voltage measurements with all the connectors con-
nected. Measure ECM terminal voltage at the nearest connector to
the sensors or actuators to be measured as accessing ECM termi-
nals from outside is impossible.
I
Use extreme care not to touch 2 pins at the same time.
I
Data is for comparison and may not be exact.
I
Use care not to enlarge the opening to keep the seal in good
condition.
Be sure ECM unit is properly grounded before checking.
ECM HARNESS CONNECTOR TERMINAL LAYOUT
SGI841
MEC032E
TROUBLE DIAGNOSES
TD27Ti
EC-346
ECM INSPECTION TABLE
Remarks: Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and
Pulse Signal)
101
102
103
G/R
G/R
G/R
Fuel cut solenoid valve
[Ignition switch “OFF”]
Approximately 0V
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
104
105
106
B
B
B
ECM ground
[Engine is running]
I
Idle speed
Approximately 0V
107
108
109
Y
Y
Y
Power supply for ECM
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
202
Y/R
Injection timing control
valve
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 10 - 12V
NEF480
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm
Approximately 9 - 14 V
NEF481
204
G/PU
Air conditioner relay
[Engine is running]
I
Air conditioner switch is “OFF”
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
I
Both air conditioner switch and blower fan switch
are “ON”
(Compressor is operating)
Approximately 0.1V
205
Y/PU
Oil pressure switch
[Ignition switch “ON”]
Approximately 0V
[Engine is running]
I
Idle speed
Voltages
208
R/Y
EGRC-solenoid valve A
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0.7V
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,800 rpm
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSES
TD27Ti
ECM Terminals and Reference Value (Cont’d)
EC-347
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and
Pulse Signal)
210
Y/B
EGRC-solenoid valve B
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0.4V
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,500 rpm
BATTERY VOLTAGE
(11 - 14V)
213
G/Y
Throttle control solenoid
valve
[Engine is running]
I
Warm-up condition
I
Low load
Approximately 0V
Except above condition
Battery voltage (12 - 14V)
214
LG
Glow relay
Refer to “Glow Control System”, EC-389.
215
L
Malfunction indicator (MI)
[Ignition switch “ON”]
Approximately 1.0V
[Engine is running]
I
Idle speed
BATTERY VOLTAGE
(11 - 14V)
218
G/R
Sensors’ ground
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0V
219
LG/R
Cooling fan relay
[Engine is running]
I
Cooling fan is not operating
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
I
Cooling fan is operating
Approximately 0.1V
221
G/W
Glow lamp
[Ignition switch “ON”]
I
Glow lamp is “ON”
Approximately 1V
[Ignition switch “ON”]
I
Glow lamp is “OFF”
BATTERY VOLTAGE
(11 - 14V)
223
R/L
Mass air flow sensor
power supply
[Ignition switch “ON”]
Approximately 5V
224
L/W
Mass air flow sensor
[Engine is running]
I
Warm-up condition
I
Idle speed
1.5 - 2.0V
320
W
Control sleeve position
sensor
[Engine is running]
I
Idle speed
Approximately 2.6V
NEF477
321
R
Control sleeve position
sensor power supply
[Engine is running]
I
Idle speed
Approximately 2.6V
NEF476
TROUBLE DIAGNOSES
TD27Ti
ECM Terminals and Reference Value (Cont’d)
EC-348
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