diagram NISSAN TEANA 2003 Service Manual

EC-340
[QR]
REFRIGERANT PRESSURE SENSOR

Wiring DiagramBBS005JR
TBWM1507E

EC-342
[QR]
REFRIGERANT PRESSURE SENSOR

2. CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine.
3. Disconnect refrigerant pressure sensor harness connector.
4. Turn ignition switch ON.
5. Check voltage between refrigerant pressure sensor terminal 1
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E39, F41

Harness for open or short between refrigerant pressure sensor and ECM
>> 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 harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 57.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E39, F41

Harness for open or short between refrigerant pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB2112E
Voltage: Approximately 5V
PBIB0188E
Continuity should exist.

REFRIGERANT PRESSURE SENSOR
EC-343
[QR]
C
D
E
F
G
H
I
J
K
L
MA
EC

6. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between refrigerant pressure sensor terminal 2 and ECM terminal 69.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E39, F41

Harness for open or short between refrigerant pressure sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-105, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationBBS005JT
REFRIGERANT PRESSURE SENSOR
Refer to ATC-144, "Removal and Installation of Refrigerant Pressure Sensor" . Continuity should exist.

EC-344
[QR]
MI & DATA LINK CONNECTORS

MI & DATA LINK CONNECTORSPFP:24814
Wiring DiagramBBS005JU
TBWM1508E

ENGINE CONTROL SYSTEM
EC-357
[VQ]
C
D
E
F
G
H
I
J
K
L
MA
EC

ENGINE CONTROL SYSTEMPFP:23710
System DiagramBBS004XI
PBIB3297E

EC-412
[VQ]
TROUBLE DIAGNOSIS

Vacuum Hose DrawingBBS004YB
Refer to EC-357, "System Diagram" for Vacuum Control System.
PBIB1754E

TROUBLE DIAGNOSIS
EC-413
[VQ]
C
D
E
F
G
H
I
J
K
L
MA
EC

Circuit DiagramBBS004YC
TBWM1436E

POWER SUPPLY AND GROUND CIRCUIT
EC-451
[VQ]
C
D
E
F
G
H
I
J
K
L
MA
EC

POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramBBS004YO
TBWM1438E

POWER SUPPLY AND GROUND CIRCUIT
EC-453
[VQ]
C
D
E
F
G
H
I
J
K
L
MA
EC

4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F103, M52

Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
7. CHECK ECM POWER SUPPLY CIRCUIT-II
1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R terminal 17 and ground with
CONSULT-II or tester.
OK or NG
OK >> Go to EC-735, "IGNITION SIGNAL" .
NG >> GO TO 8.
PBIB2160E
Continuity should exist.
Voltage: Battery voltage
PBIB1610E

EC-454
[VQ]
POWER SUPPLY AND GROUND CIRCUIT

8. CHECK ECM POWER SUPPLY CIRCUIT-III
1. Turn ignition switch ON and then OFF.
2. Check voltage between ECM terminals 119, 120 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 15.
NG (Battery voltage does not exist.)>>GO TO 9.
NG (Battery voltage exists for more than a few seconds.)>>GO TO
12.
9. CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 111 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 12.
10. CHECK ECM POWER SUPPLY CIRCUIT-V
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminals 119, 120 and IPDM E/R terminal 18.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 18.
NG >> GO TO 11.
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness or connectors E11, E253

Harness or connectors E102, M57

Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors. Voltage: After turning ignition switch OFF, battery
voltage will exist for a few seconds, then
drop approximately 0V.
MBIB0016E
Voltage: Battery voltage
PBIB1191E
Continuity should exist.