Nissan Terrano model r20 series 2004. Instruction — part 87
ECM HARNESS CONNECTOR TERMINAL LAYOUT
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 damage the
ECM’s transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and Pulse
Signal)
2
LG
Intake air control valve
control solenoid valve
Engine is running.
BATTERY VOLTAGE
(11 - 14V)
Ignition switch “OFF”
For a few seconds after turning ignition
switch “OFF”
Approximately 0.1V
4
G
ECM relay (Self-shutoff)
Ignition switch “ON”
Ignition switch “OFF”
For a few seconds after turning ignition
switch “OFF”
Approximately 0.25V
Ignition switch “OFF”
More than a few seconds after turning igni-
tion switch “OFF”
BATTERY VOLTAGE
(11 - 14V)
SEF064P
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ZD30DDTi
ECM Terminals and Reference Value (Cont’d)
EC-70
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and Pulse
Signal)
5
L/B
Tachometer
Engine is running.
Warm-up condition
Idle speed
Approximately 5.7V
SEF255Z
Engine is running.
Warm-up condition
Engine speed is 2,000 rpm
Approximately 6V
SEF256Z
6
Y
Engine oil lamp
Ignition switch “ON”
Approximately 0V
Engine is running.
BATTERY VOLTAGE (11 -
14V)
14
LG/R
Cooling fan relay
Engine is running.
Cooling fan is not operating
BATTERY VOLTAGE
(11 - 14V)
Engine is running.
Cooling fan is operating
Approximately 0.1V
15
G/PU
Air conditioner relay
Engine is running.
Air conditioner switch is “OFF”
BATTERY VOLTAGE
(11 - 14V)
Engine is running.
Both air conditioner switch and blower fan
switch are “ON”
(Compressor is operating)
Approximately 0.1V
16
G/W
Glow lamp
Ignition switch “ON”
Glow lamp is “ON”
Approximately 1V
Ignition switch “ON”
Glow lamp is “OFF”
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ZD30DDTi
ECM Terminals and Reference Value (Cont’d)
EC-71
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and Pulse
Signal)
17
G/Y
Stop lamp switch
Ignition switch “ON”
Brake pedal fully released
Approximately 0V
Ignition switch “ON”
Brake pedal depressed
BATTERY VOLTAGE
(11 - 14V)
18
L
Malfunction indicator
Ignition switch “ON”
Approximately 1V
Engine is running.
Idle speed
BATTERY VOLTAGE
(11 - 14V)
19
LG/W
Engine coolant tempera-
ture sensor
Engine is running.
Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature
20
PU
Start signal
Ignition switch “ON”
Approximately 0V
Ignition switch “START”
BATTERY VOLTAGE
(11 - 14V)
21
G/R
Air conditioner switch
Engine is running.
Air conditioner switch is “OFF”
BATTERY VOLTAGE
(11 - 14V)
Engine is running.
Both air conditioner switch and blower fan
switch are “ON”
(Compressor is operating)
Approximately 0.1V
22
BR/Y
(A/T)
G
(M/T)
Park/Neutral position
switch
Ignition switch “ON”
Gear position is “Neutral” (M/T models)
Gear position is “P” or “N” (A/T models)
Approximately 0V
Ignition switch “ON”
Except the above gear position
BATTERY VOLTAGE
(11 - 14V)
23
G
Accelerator position sen-
sor
Ignition switch “ON”
Accelerator pedal fully released
0.4 - 0.6V
Ignition switch “ON”
Accelerator pedal fully depressed
Approximately 4.5V
24
G/Y
A/T signal No. 1
Engine is running.
Warm-up condition
Idle speed
Voltage goes high up once in
a few seconds
SEF448Z
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ZD30DDTi
ECM Terminals and Reference Value (Cont’d)
EC-72
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage and Pulse
Signal)
26
Y/B
Vehicle speed sensor
Engine is running.
Lift up the vehicle
In 1st gear position
Vehicle speed is 10 km/h (6 MPH)
0 - Approximately 4.8V
SEF257Z
Engine is running.
Lift up the vehicle
In 2nd gear position
Vehicle speed is 30 km/h (19 MPH)
Approximately 2.2V
SEF258Z
27
R/L
Engine oil pressure
switch-2
Ignition switch “ON”
Approximately 0V
Engine is running.
BATTERY VOLTAGE (11 -
14V)
29
LG/R
Accelerator switch (F/C)
Ignition switch “ON”
Accelerator pedal fully released
BATTERY VOLTAGE
(11 - 14V)
Ignition switch “ON”
Accelerator pedal depressed
Approximately 0V
30
LG/Y
A/T signal No. 3
Engine is running.
Warm-up condition
Idle speed
Approximately 0V
Engine is running.
Warm-up condition
Engine speed is 2,000 rpm
Approximately 7.7V
31
L/Y
Accelerator position
switch (Idle)
Ignition switch “ON”
Accelerator pedal fully released
BATTERY VOLTAGE
(11 - 14V)
Ignition switch “ON”
Accelerator pedal depressed
Approximately 0V
32
R/L
Accelerator position
switch (Full)
Ignition switch “ON”
Accelerator pedal released
Approximately 0V
Ignition switch “ON”
Accelerator pedal fully depressed
BATTERY VOLTAGE
(11 - 14V)
33
G
Electronic control fuel
injection pump
Engine is running.
Warm-up condition
Idle speed
Approximately 2.5V
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ZD30DDTi
ECM Terminals and Reference Value (Cont’d)
EC-73
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