sensor NISSAN LATIO 2009 Service Repair Manual

EC-1006< SERVICE INFOMATION >
[MR TYPE 1]
REFRIGERANT PRESSURE SENSOR
Wiring Diagram INFOID:0000000004537541
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring in put/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground. BBWA2662E

REFRIGERANT PRESSURE SENSOR
EC-1007
< SERVICE INFOMATION >
[MR TYPE 1] C
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Diagnosis Procedure
INFOID:00000000045375421.
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 voltage between ECM terminal 41 and ground with CON- SULT-III or tester.
OK or NG OK >>
INSPECTION END
NG >> GO TO 2. 2.
CHECK GROUND CONNECTIONS
1. Turn A/C switch and blower fan switch OFF.
2. Stop engine and turn ignition switch OFF.
3. Loosen and retighten ground screw on the body. Refer to EC-632, " Ground Inspection " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace ground connections. 3.
CHECK REFRIGERANT PRESSURE SE NSOR POWER SUPPLY CIRCUIT
TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
41 GR Refrigerant pressure sensor [Engine is running]
• Warm-up condition
• Both A/C switch and blower fan switch: ON
(Compressor operates) 1.0 - 4.0V
48 BR Sensor ground
(Refrigerant pressure sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0V
74 W Sensor power supply
(Refrigerant pressure sensor) [Ignition switch: ON]
Approximately 5VVoltage: 1.0 - 4.0V
PBIA9574J
:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E

EC-1008< SERVICE INFOMATION >
[MR TYPE 1]
REFRIGERANT PRESSURE SENSOR
1. Disconnect refrigerant pressure sensor (1) harness connector.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage between refrigerant pressure sensor terminal 3 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 5.
NG >> GO TO 4. 4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• 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. 5.
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 1 and ECM terminal 48.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 7.
NG >> GO TO 6. 6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• 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. 7.
CHECK REFRIGERANT PRESSURE SENSOR INPU T SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between refrigerant pressure sensor terminal 2 and ECM terminal 41. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG BBIA0713E
Voltage: Approximately 5V
SEF479Y
Continuity should exist.
Continuity should exist.

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OK >> GO TO 9.
NG >> GO TO 8. .
OK or NG OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and Installation INFOID:0000000004537543
REFRIGERANT PRESSURE SENSOR Refer to MTC-83, " Removal and Installation of Refrigerant Pressure Sensor " .

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Air Fuel Ratio (A/F) Sensor 1 Heater
INFOID:0000000004537551
Heated Oxygen sensor 2 Heater INFOID:0000000004537552
Crankshaft Position Sensor (POS) INFOID:0000000004537553
Refer to EC-780, " Component Inspection " .
Camshaft Position Sensor (PHASE) INFOID:0000000004537554
Refer to EC-785, " Component Inspection " .
Throttle Control Motor INFOID:0000000004537555
Fuel Injector INFOID:0000000004537556
Fuel Pump INFOID:0000000004537557
Resistance [at 25
°C (77 °F)] 1.8 - 2.44 Ω

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INDEX FOR DTC
U0101-U1001 INFOID:0000000004499897
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-III.
P0011-P0075 INFOID:0000000004806544
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
P0101-P0128 INFOID:0000000004806556
DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
U0101 0101*4
LOST COMM (TCM) EC-1145U0140
0140*4
LOST COMM (BCM) EC-1147U1001
1001*4
CAN COMM CIRCUIT EC-1149DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
P0011 0011 INT/V TIM CONT-B1 EC-1151P0031 0031 A/F SEN1 HTR (B1)
EC-1155P0032 0032 A/F SEN1 HTR (B1)
EC-1155P0037 0037 HO2S2 HTR (B1)
EC-1160P0038 0038 HO2S2 HTR (B1)
EC-1160P0075 0075 INT/V TIM V/CIR-B1
EC-1165DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
P0101 0101 MAF SEN/CIRCUIT-B1 EC-1170P0102 0102 MAF SEN/CIRCUIT-B1
EC-1178P0103 0103 MAF SEN/CIRCUIT-B1
EC-1178P0112 0112 IAT SEN/CIRCUIT-B1
EC-1185P0113 0113 IAT SEN/CIRCUIT-B1
EC-1185P0116 0116 ECT SEN/CIRC
EC-1189P0117 0117 ECT SEN/CIRC
EC-1189P0118 0118 ECT SEN/CIRC
EC-1189P0122 0122 TP SEN 2/CIRC-B1
EC-1197P0123 0123 TP SEN 2/CIRC-B1
EC-1197P0125 0125 ECT SENSOR
EC-1202

P0128 0128 THERMSTAT FNCTN
EC-1208DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3 P0131 0131 A/F SENSOR1 (B1)
EC-1216P0132 0132 A/F SENSOR1 (B1)
EC-1222P0133 0133 A/F SENSOR1 (B1)
EC-1228P0137 0137 HO2S2 (B1)
EC-1235P0138 0138 HO2S2 (B1)
EC-1242P0139 0139 HO2S2 (B1)
EC-1251P0171 0171 FUEL SYS-LEAN-B1
EC-1258P0172 0172 FUEL SYS-RICH-B1
EC-1264P0181 0181 FTT SENSOR
EC-1270P0182 0182 FTT SEN/CIRCUIT
EC-1274P0183 0183 FTT SEN/CIRCUIT
EC-1274DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
P0222 0222 TP SEN 1/CIRC-B1 EC-1278P0223 0223 TP SEN 1/CIRC-B1
EC-1278P0300 0300 MULTI CYL MISFIRE
EC-1283P0301 0301 CYL 1 MISFIRE
EC-1283P0302 0302 CYL 2 MISFIRE
EC-1283P0303 0303 CYL 3 MISFIRE
EC-1283P0304 0304 CYL 4 MISFIRE
EC-1283P0327 0327 KNOCK SEN/CIRC-B1
EC-1289P0328 0328 KNOCK SEN/CIRC-B1
EC-1289P0335 0335 CKP SEN/CIRCUIT
EC-1293P0340 0340 CMP SEN/CIRC-B1
EC-1299P0420 0420 TW CATALYST SYS-B1
EC-1305

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*1: 1st trip DTC No. is
the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
P0441-P0463 INFOID:0000000004806553
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
P0500-P0643 INFOID:0000000004806552
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
P0441 0441 EVAP PURG FLOW/MON EC-1310P0442 0442 EVAP SMALL LEAK
EC-1315P0443 0443 PURG VOLUME CONT/V
EC-1322P0444 0444 PURG VOLUME CONT/V
EC-1330P0445 0445 PURG VOLUME CONT/V
EC-1330P0447 0447 VENT CONTROL VALVE
EC-1336P0448 0448 VENT CONTROL VALVE
EC-1342P0451 0451 EVAP SYS PRES SEN
EC-1348P0452 0452 EVAP SYS PRES SEN
EC-1351P0453 0453 EVAP SYS PRES SEN
EC-1358P0455 0455 EVAP GROSS LEAK
EC-1366P0456 0456 EVAP VERY SML LEAK
EC-1373P0460 0460 FUEL LEV SEN SLOSH
EC-1381P0461 0461 FUEL LEVEL SENSOR
EC-1383P0462 0462 FUEL LEVL SEN/CIRC
EC-1385P0463 0463 FUEL LEVL SEN/CIRC
EC-1385DTC*1
Items
(CONSULT-III screen terms) Reference
CONSULT-III
GST* 2
ECM*3
P0500 0500 VEH SPEED SEN/CIRC EC-1387P0506 0506 ISC SYSTEM
EC-1389P0507 0507 ISC SYSTEM
EC-1391P0605 0605 ECM
EC-1393P0607 0607 ECM
EC-1395P0643 0643 SENSOR POWER/CIRC
EC-1396

P2101 2101 ETC FNCTN/CIRC-B1
EC-1451P2103 2103 ETC MOT PWR
EC-1447P2118 2118 ETC MOT-B1
EC-1457P2119 2119 ETC ACTR-B1
EC-1462P2122 2122 APP SEN 1/CIRC
EC-1464P2123 2123 APP SEN 1/CIRC
EC-1464P2127 2127 APP SEN 2/CIRC
EC-1469P2128 2128 APP SEN 2/CIRC
EC-1469P2135 2135 TP SENSOR-B1
EC-1476P2138 2138 APP SENSOR
EC-1481P2A00 2A00 A/F SENSOR1 (B1)
EC-1488

PRECAUTIONS
EC-1021
< SERVICE INFOMATION >
[MR TYPE 2] C
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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004499899
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Procedur e without Cowl Top Cover INFOID:0000000004499900
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnosis (OBD) Syst em of Engine and A/T, CVT INFOID:0000000004499901
The ECM has an on board diagnostic system . It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
• Be sure to turn the ignition sw itch OFF and disconnect the battery ground cable before any repair or
inspection work. The open/short circuit of relate d switches, sensors, solenoid valves, etc. will cause
the MIL to light up.
• Be sure to connect and lock the connectors secure ly after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
• Certain systems and components, especially those related to OBD, may use a new style slide-lock-
ing type harness connector. For descripti on and how to disconnect, refer to PG-64 .
• Be sure to route and secure the harnesses properly after work. The interference of the harness with
a bracket, etc. may cause the MIL to li ght up due to the short circuit. PIIB3706J