Nissan Terrano model r20 series 2004. Instruction — part 162
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
Fuel cut solenoid valve
[Ignition switch “OFF”]
Approximately 0V
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
104
105
106
B
ECM ground
[Engine is running]
I
Idle speed
Approximately 0V
107
108
109
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-370
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-412.
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-371
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and
Pulse Signal)
322
B
Control sleeve position
sensor ground
[Engine is running]
I
Idle speed
Approximately 2.6V
NEF476
325
L
ECM relay (Self-shutoff)
[Ignition switch “ON”]
[Ignition switch “OFF”]
I
For a few seconds after turning ignition switch
“OFF”
Approximately 1.4V
[Ignition switch “OFF”]
I
A few seconds passed after turning ignition switch
“OFF”
BATTERY VOLTAGE
(11 - 14V)
331
L/R
Crankshaft position sensor
(TDC) ground
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0V
333
R
Needle lift sensor ground
[Ignition switch “ON”]
Approximately 0V
334
G/R
Engine coolant tempera-
ture sensor ground
[Ignition switch “ON”]
Approximately 0V
335
G/R
Fuel temperature sensor
ground
[Engine is running]
Approximately 0V
344
L/G
Crankshaft position sensor
(TDC)
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0V
SEF333Y
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm
Approximately 0V
SEF334Y
345
G
Needle lift sensor
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 3.5V
[Engine is running]
I
Warm-up condition
I
Engine speed is 2,000 rpm
Approximately 3.5V
TROUBLE DIAGNOSES
TD27Ti
ECM Terminals and Reference Value (Cont’d)
EC-372
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and
Pulse Signal)
347
LG/W
Engine coolant tempera-
ture sensor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with
engine coolant tempera-
ture
348
Y/B
Fuel temperature sensor
[Engine is running]
0.6 - 5V
Output voltage varies with
fuel temperature.
349
G/R
Injection timing control
valve ground
[Ignition switch “ON”]
Approximately 0V
403
G/R
Air conditioner switch
[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
405
G/Y
Stop lamp switch
[Ignition switch “ON”]
I
Brake pedal fully released
Approximately 0V
[Ignition switch “ON”]
I
Brake pedal depressed
BATTERY VOLTAGE
(11 - 14V)
416
Y/R
Brake pedal position
switch
[Ignition switch “ON”]
I
Brake pedal fully released
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
I
Brake pedal depressed
Approximately 0V
415
OR
Data link connector for
CONSULT-II
[Engine is running]
I
Idle speed (CONSULT-II is connected and turned
on)
Approximately 0V
420
R
BATTERY VOLTAGE
(11 - 14V)
417
Y/B
Vehicle speed sensor
[Engine is running]
I
Lift up the vehicle
I
In 1st gear position
I
Vehicle speed is 10 km/h (6 MPH)
0 - Approximately 8V
SEF891Y
[Engine is running]
I
Lift up the vehicle
I
In 2nd gear position
I
Vehicle speed is 30 km/h (19 MPH)
Approximately 6V
SEF892Y
422
PU
Start signal
[Ignition switch “ON”]
Approximately 0V
[Ignition switch “START”]
BATTERY VOLTAGE
(11 - 14V)
425
R/B
Accelerator position sen-
sor ground
[Engine is running]
I
Warm-up condition
I
Idle speed
Approximately 0V
TROUBLE DIAGNOSES
TD27Ti
ECM Terminals and Reference Value (Cont’d)
EC-373
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