Nissan Qashqai (2007-2010). Manual — part 199
REFRIGERANT PRESSURE SENSOR
EC-315
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
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REFRIGERANT PRESSURE SENSOR
Description
INFOID:0000000001056526
The refrigerant pressure sensor is installed at the condenser of the air conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressure to voltage. The voltage signal is sent
to ECM, and ECM controls cooling fan system.
Component Function Check
INFOID:0000000001056527
1.
CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1.
Start engine and warm it up to normal operating temperature.
2.
Turn A/C switch and blower fan switch ON.
3.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000001056528
1.
CHECK GROUND CONNECTION
1.
Turn A/C switch and blower fan switch OFF.
2.
Stop engine.
3.
Turn ignition switch OFF.
4.
Check ground connection E21. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect refrigerant pressure sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between refrigerant pressure sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
PBIB2657E
ECM
Ground
Voltage
Connector
Terminal
F8
41
(Refrigerant pressure sensor signal)
Ground
1.0 - 4.0V
Refrigerant pressure sensor
Ground
Voltage
Connector
Terminal
E49
3
Ground
Approx. 5V
EC-316
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
REFRIGERANT PRESSURE SENSOR
3.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F123, E6
• 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 F123, E6
• 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 F123, E6
• 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-39, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace 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-317
< ECU DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
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ECU DIAGNOSIS
ECM
Reference Value
INFOID:0000000001056529
VALUES ON THE DIAGNOSIS TOOL
Remarks:
• Specification data are reference values.
• Specification data are output/input values which are detected or supplied by the ECM at the connector.
*Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the
specification data in spite of the ignition timing not being adjusted to the specification data. this IGN TIMING
monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and
other ignition timing related sensors.
Monitor Item
Condition
Values/Status
ENG SPEED
• Run engine and compare CONSULT-III 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
COOLAN TEMP/S
• Engine: After warming up
More than 70
°
C (158F)
HO2S1 (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
0 - 0.3V
←→
Approx. 0.6 -
1.0V
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 - 0.3V
←→
Approx. 0.6 -
1.0V
HO2S1 MNTR (B1)
• Engine: After warming up
Maintaining engine speed at 2,000 rpm
LEAN
←→
RICH
Changes more than 5 times
during 10 seconds
HO2S2 MNTR (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
LEAN
←→
RICH
VHCL SPEED SE
• Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication.
Almost the same speed as
speedometer indication
BATTERY VOLT
• Ignition switch: ON (Engine stopped)
11 - 14V
ACCEL SEN 1
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.6 - 0.9V
Accelerator pedal: Fully depressed
4.0 - 4.8V
ACCEL SEN 2
• Ignition switch: ON
(Engine stopped)
Accelerator pedal: Fully released
0.6 - 0.9V
Accelerator pedal: Fully depressed
3.9 - 4.8V
THRL SEN 1-B1
• Ignition switch: ON
(Engine stopped)
• Shift lever: 1st
Accelerator pedal: Fully released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
THRL SEN 2-B1
• Ignition switch: ON
(Engine stopped)
• Shift lever:1st
Accelerator pedal: Fully released
More than 0.36V
Accelerator pedal: Fully depressed
Less than 4.75V
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
EC-318
< ECU DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
ECM
AIR COND SIG
• Engine: After warming up, idle the
engine
Air conditioner switch: OFF
OFF
Air conditioner switch: ON
(Compressor operates.)
ON
P/N POSI SW
• Ignition switch: ON
Shift lever: Neutral
ON
Shift lever: 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
• Shift lever: Neutral
• 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
• Shift lever: Neutral
• Air conditioner switch: OFF
• No load
Idle
10
°
- 20
°
BTDC
2,000 rpm
25
°
- 45
°
BTDC
CAL/ALD VALUE
• Engine: After warming up
• Shift lever: Neutral
• Air conditioner switch: OFF
• No load
Idle
10% - 35%
2,500 rpm
10% - 35%
MASS AIRFLOW
• Engine: After warming up
• Shift lever: Neutral
• Air conditioner switch: OFF
• No load
Idle
1.0 - 4.0 g·m/s
2,500 rpm
2.0 - 10.0 g·m/s
PURG VOL C/V
• Engine: After warming up
• Shift lever: Neutral
• Air conditioner switch: OFF
• No load
Idle
0%
2,000 rpm
0% - 50%
INT/V TIM (B1)
• Engine: After warming up
• Shift lever: Neutral
• 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
• Shift lever: Neutral
• 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 seconds after turning ignition switch: ON
• Engine running or cranking
ON
• Except above
OFF
THRTL RELAY
• Ignition switch: ON
ON
Monitor Item
Condition
Values/Status
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