Nissan Cube. Manual — part 385
EC-426
< DTC/CIRCUIT DIAGNOSIS >
[MR18DE]
REFRIGERANT PRESSURE SENSOR
NO
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F1, E8
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between refrigerant pressure sensor harness connector and ECM harness connec-
tor.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between ECM harness connector and refrigerant pressure sensor harness connec-
tor.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F1
• Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace refrigerant pressure sensor. Refer to
HA-41, "REFRIGERANT PRESSURE SENSOR :
NO
>> Repair or replace.
Refrigerant pressure sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E49
1
F8
48
Existed
Refrigerant pressure sensor
ECM
Continuity
Connector
Terminal
Connector
Terminal
E49
2
F8
41
Existed
ECM
EC-427
< ECU DIAGNOSIS INFORMATION >
[MR18DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ECU DIAGNOSIS INFORMATION
ECM
Reference Value
INFOID:0000000009947577
VALUES ON THE DIAGNOSIS TOOL
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
z
Numerical values in the following table are reference values.
z
These values are input/output values that ECM receives/transmits and may differ from actual operations.
Example:
The ignition timing shown by the timing light may differ from the ignition timing displayed on the data monitor.
This occurs because the timing light shows a value calculated by ECM according to signals received from the
cam shaft position sensor and other sensors related to ignition timing.
For outlines of following items, refer to
.
Monitor Item
Condition
Values/Status
ENG SPEED
• Run engine and compare CONSULT value with the tachometer indication.
Almost the same speed as
the tachometer indication.
MAS A/F SE-B1
See
B/FUEL SCHDL
See
A/F ALPHA-B1
See
COOLANT TEMP/S
• Engine: After warming up
More than 70
°
C (158F)
A/F SEN1 (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
Fluctuates around 2.2 V
HO2S2 (B1)
• Revving engine from idle up to 3,000 rpm quickly after the following conditions
are met.
- Engine: After warming up
- After keeping engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
0 - 0.3 V
←→
Approx. 0.6 -
1.0 V
HO2S2 MNTR (B1)
LEAN
←→
RICH
VHCL SPEED SE
• Turn drive wheels and compare CONSULT value with the speedometer indi-
cation.
Almost the same speed as
speedometer indication
BATTERY VOLT
• Ignition switch: ON (Engine stopped)
11 - 14 V
ACCEL SEN 1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.6 - 0.9 V
Accelerator pedal: Fully depressed
4.0 - 4.8 V
ACCEL SEN 2*
1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.6 - 0.9 V
Accelerator pedal: Fully depressed
3.9 - 4.8 V
TP SEN 1-B1
• Ignition switch: ON
(Engine stopped)
• Selector lever position: D (CVT)
or 1st (M/T)
Accelerator pedal: Fully released
More than 0.36 V
Accelerator pedal: Fully depressed
Less than 4.75 V
TP SEN 2-B1*
1
• Ignition switch: ON
(Engine stopped)
• Selector lever position: D (CVT)
or 1st (M/T)
Accelerator pedal: Fully released
More than 0.36 V
Accelerator pedal: Fully depressed
Less than 4.75 V
START SIGNAL
• Ignition switch: ON
→
START
→
ON
OFF
→
ON
→
OFF
CLSD THL POS
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
ON
Accelerator pedal: Slightly depressed
OFF
AIR COND SIG
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
EC-428
< ECU DIAGNOSIS INFORMATION >
[MR18DE]
ECM
P/N POSI SW
• Ignition switch: ON
Selector lever position: P or N (CVT) or
Neutral (M/T)
ON
Selector lever position: Except above
OFF
PW/ST SIGNAL
• Engine: After warming up, idle the
engine
Steering wheel: Not being turned
OFF
Steering wheel: Being turned
ON
LOAD SIGNAL
• Ignition switch: ON
Rear window defogger switch: ON
and/or Lighting switch: 2nd position
ON
Rear window defogger switch and lighting
switch: OFF
OFF
IGNITION SW
• Ignition switch: ON
→
OFF
→
ON
ON
→
OFF
→
ON
HEATER FAN SW
• Engine: After warming up, idle the
engine
Heater fan switch: ON
ON
Heater fan switch: OFF
OFF
BRAKE SW
• Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
INJ PULSE-B1
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
2.0 - 3.0 msec
2,000 rpm
1.9 - 2.9 msec
IGN TIMING
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
8 - 18
°
BTDC
2,000 rpm
25 - 45
°
BTDC
CAL/LD VALUE
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
10 - 35%
2,500 rpm
10 - 35%
MASS AIRFLOW
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
1.0 - 4.0 g/s
2,500 rpm
2.0 - 10.0 g/s
PURG VOL C/V
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
0%
2,000 rpm
0 - 50%
INT/V TIM (B1)
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
−
5 - 5
°
CA
2,000 rpm
Approx. 0 - 40
°
CA
INT/V SOL (B1)
• Engine: After warming up
• Selector lever position: P or N
(CVT) or Neutral (M/T)
• Air conditioner switch: OFF
• No load
Idle
0 - 2%
2,000 rpm
Approx. 0 - 90%
AIR COND RLY
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates)
ON
FUEL PUMP RLY
• For 1 second after turning ignition switch: ON
• Engine running or cranking
ON
• Except above
OFF
Monitor Item
Condition
Values/Status
ECM
EC-429
< ECU DIAGNOSIS INFORMATION >
[MR18DE]
C
D
E
F
G
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EC
N
P
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THRTL RELAY
• Ignition switch: ON
ON
COOLING FAN
• Engine: After warning up, idle the
engine
• Air conditioner switch: OFF
Engine coolant temperature is 98
°
C
(208
°
F) or less
OFF
Engine coolant temperature is between
98
°
C (208
°
F) and 99
°
C (210
°
F)
LOW
Engine coolant temperature is 100
°
C
(212
°
F) or more
HIGH
HO2S2 HTR (B1)
• Engine speed: Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load
ON
VEHICLE SPEED
• Turn drive wheels and compare CONSULT value with the speedometer indi-
cation.
Almost the same speed as
the speedometer indication
IDL A/V LEARN
• Engine: running
Idle air volume learning has not been per-
formed yet.
YET
Idle air volume learning has already been
performed successfully.
CMPLT
TRVL AFTER MIL
• Ignition switch: ON
Vehicle has traveled after MIL has turned
ON.
0 - 65,535 km
(0 - 40,723 miles)
A/F S1 HTR (B1)
• Engine: After warming up, idle the engine
(More than 140 seconds after starting engine)
4 - 100%
AC PRESS SEN
• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)
1.0 - 4.0 V
EVAP SYS PRES
• Ignition switch: ON
Approx 1.8 - 4.8 V
VENT CONT/V
• Ignition switch: ON
OFF
I/P PULLY SPD
• Vehicle speed: More than 20 km/h (12MPH)
Almost the same speed as
the tachometer indication.
A/F ADJ-B1
• Engine: Running
-0.330 - 0.330
FUEL T/TMP SE
• Ignition switch: ON
Indicates fuel tank tempera-
ture.
INT/A TEMP SE
• Ignition switch: ON
Indicates intake air tempera-
ture.
FUEL LEVEL SE
• Ignition switch: ON
Depending on fuel level of
fuel tank.
BAT CUR SEN
• Engine speed: Idle
• Battery: Fuel charged*
2
• Selector lever: P or N (CVT), Neutral (M/T)
• Air conditioner switch: OFF
• No load
Approx 2,600 - 3,500 mV
ALT DUTY
• Engine: Idle
0 - 80%
ALT DUTY SIG
• Power generation voltage variable control: Operating
ON
• Power generation voltage variable control: Not operating
OFF
VHCL SPEED SE
• Turn drive wheels and compare CONSULT value with the speedometer indi-
cation.
Almost the same speed as
the speedometer indication.
SET VHCL SPD
• Engine: Running
ASCD: Operating
The preset vehicle speed is
displayed.
MAIN SW
• Ignition switch: ON
MAIN switch: pressed
ON
MAIN switch: Released
OFF
CANCEL SW
• Ignition switch: ON
CANCEL switch: pressed
ON
CANCEL switch: Released
OFF
Monitor Item
Condition
Values/Status
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