Nissan Primera P11. Instruction — part 87
ECM INSPECTION TABLE
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
damage to 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)
101
102
103
B/L
Electric governor ground
Engine is running. (Warm-up condition)
Idle speed
qApproximately 10.5V
SEF562S
Engine is running. (Warm-up condition)
Engine speed is 2,000 rpm
Approximately 10.5
SEF563S
104
105
106
B
ECM ground
Engine is running.
Idle speed
Engine ground
(Probe this terminal with
@
tester probe when
measuring.)
107
108
109
R
Power supply for ECM
Ignition switch “ON”
BATTERY VOLTAGE
(11 - 14V)
202
B/W
Injection timing control
valve
Engine is running. (Warm-up condition)
Idle speed
Approximately 9V
SEF564S
Engine is running. (Warm-up condition)
Engine speed is 2,000 rpm
Approximately 8V
SEF565S
TROUBLE DIAGNOSIS — General Description
CD20T
ECM Terminals and Reference Value (Cont’d)
EC-53
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and
Pulse Signal)
204
L/W
Air conditioner relay
Engine is running.
Both A/C switch and blower switch are
“ON”
Approximately 0.4V
Engine is running.
A/C switch is “OFF”
BATTERY VOLTAGE
(11 - 14V)
208
P
EGRC-solenoid valve A
Engine is running. (Warm-up condition)
Idle speed
BATTERY VOLTAGE (11
- 14V)
Engine is running. (Warm-up condition)
Engine speed is 2,800 rpm
Approximately 0.3V
214
W/R
Glow relay
Refer to “Glow control System”.
215
OR/L
Malfunction indicator
Ignition switch “ON”
Approximately 1.0V
Engine is running.
Idle speed
BATTERY VOLTAGE
(11 - 14V)
218
OR
Mass air flow sensor
ground
Engine is running.
Idle speed
Approximately 0V
219
LG/R
Cooling fan relay
(Low speed)
Engine is running.
Cooling fan is not operating.
BATTERY VOLTAGE
(11 - 14V)
Engine is running.
Cooling fan is operating.
Approximately 0.4V
220
LG
Cooling fan relay
(High speed)
Engine is running.
Cooling fan is not operating.
Cooling fan is operating at low speed.
BATTERY VOLTAGE
(11 - 14V)
Engine is running.
Cooling fan is operating at high speed.
Approximately 0.5V
221
P/L
Glow lamp
Ignition switch “ON”
Glow lamp is “ON”.
Approximately 1.0V
Ignition switch “ON”
Glow lamp is “OFF”
BATTERY VOLTAGE
(11 - 14V)
223
W/L
Mass air flow sensor
power supply
Ignition switch “ON”
Approximately 5V
224
L/W
Mass air flow sensor
Engine is running. (Warm-up condition)
Idle speed
1.9 - 2.3V
Engine is running. (Warm-up condition)
Engine speed is 2,000 rpm
2.5 - 2.9V
TROUBLE DIAGNOSIS — General Description
CD20T
ECM Terminals and Reference Value (Cont’d)
EC-54
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and
Pulse Signal)
320
W
Control sleeve position
sensor power supply
Engine is running.
Idle speed
Approximately 2.6V
SEF559S
321
B
Control sleeve position
sensor ground
Engine is running.
Idle speed
Approximately 2.6V
SEF560S
322
R
Control sleeve position
sensor (Reference sig-
nal)
Engine is running. (Warm-up condition)
Idle speed
Approximately 2.6V
SEF561S
325
W/G
Engine control module
relay (Self-shutoff)
Engine is running.
Ignition switch “LOCK”
For a few seconds after turning ignition
switch to the “LOCK” position
0 - 1V
Ignition switch “LOCK”
Following a few seconds delay after turning
ignition switch to the “LOCK” position
BATTERY VOLTAGE
(11 - 14V)
331
OR
Crankshaft position sen-
sor (TDC) ground
Engine is running.
Idle speed
Approximately 0V
333
B
Needle lift sensor
ground
Ignition switch “ON”
Approximately 0V
334
335
436
B
Sensors’ ground
Engine is running.
Idle speed
Approximately 0V
TROUBLE DIAGNOSIS — General Description
CD20T
ECM Terminals and Reference Value (Cont’d)
EC-55
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA
(DC Voltage and
Pulse Signal)
344
W
Crankshaft position sen-
sor (TDC) (Signal)
Engine is running. (Warm-up condition)
Idle speed
Approximately 0V
NEF867
Engine is running.
Engine speed is 2,000 rpm
Approximately 0V
NEF868
345
W
Needle lift sensor
Engine is running. (Warm-up condition)
Idle speed
Approximately 3.8 - 4.0V
NEF869
Engine is running. (Warm-up condition)
Engine speed is 2,000 rpm
Approximately 3.8 - 4.0V
NEF870
347
L/B
Engine coolant tempera-
ture sensor
Engine is running.
0.6 - 4.8V
Output voltage varies
with engine coolant tem-
perature.
348
411
R/Y
Fuel temperature sensor
Engine is running.
0.6 - 4.8V
Output voltage varies
with fuel temperature.
349
SB
Fuel cut solenoid valve
Ignition switch “LOCK”
Approximately 0V
Ignition switch “ON”
BATTERY VOLTAGE
(11 - 14V)
TROUBLE DIAGNOSIS — General Description
CD20T
ECM Terminals and Reference Value (Cont’d)
EC-56
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