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ENGINE SECTION EM ENGINE MECHANICAL A EM C D E CONTENTS MR20DE SPARK PLUG 19 F Exploded View 19 Removal and Installation 19 Inspection 20 G SYMPTOM DIAGNOSIS NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING CAMSHAFT VALVE CLEARANCE 21 NVH troubleshooting Chart Inspection and Adjustment 21 PRECAUTION COMPRESSION PRESSURE 24 Inspection 24 PRECAUTIONS Precaution for Procedure without Cowl Top Cover Precaution Necessary for Steering Wheel Rotation after Battery Disconnect Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" Draining Engine Coolant Disconnecting Fuel Piping Removal and Disassembly Inspection, Repair and Replacement Assembly and Installation Parts Requiring Angle Tightening Liquid Gasket ON-VEHICLE REPAIR 25 PREPARATION 11 INTAKE MANIFOLD 29 PREPARATION 11 Exploded View 29 Removal and Installation 29 Special Service Tools 11 Commercial Service Tools 12 Exploded View 25 Removal and Installation 25 DRIVE BELT AUTO-TENSIONER 26 Exploded View 26 Removal and Installation 26 J K AIR CLEANER AND AIR DUCT 27 L Exploded View 27 Removal and Installation 27 Inspection 28 M N EXHAUST MANIFOLD 32 Exploded View 32 Removal and Installation 32 Inspection 33 DRIVE BELTS 15 Exploded View 15 Checking 15 Tension Adjustment 15 Removal and Installation 16 OIL PAN (LOWER) 35 AIR CLEANER FILTER 18 FUEL INJECTOR AND FUEL TUBE 38 Revision: 2008 December I ENGINE COVER 25 ON-VEHICLE MAINTENANCE 15 Removal and Installation 18 H Exploded View 35 Removal and Installation 35 Inspection 37 EM-1 Exploded View 38 Removal and Installation 38 J32 O P Inspection 41 IGNITION COIL, SPARK PLUG AND ROCKER COVER 43 Exploded View 43 Removal and Installation 43 TIMING CHAIN 45 Exploded View 45 Removal and Installation 46 Inspection 54 Connecting Rod Bearing 110 Main Bearing 112 SERVICE DATA AND SPECIFICATIONS (SDS) 116 SERVICE DATA AND SPECIFICATIONS (SDS) 116 OIL SEAL 65 General Specification 116 Drive Belt 116 Spark Plug 116 Exhaust Manifold 117 Camshaft 117 Cylinder Head 119 Cylinder Block 121 Connecting Rod Bearing 124 Main Bearing 125 VALVE OIL SEAL 65 VALVE OIL SEAL : Removal and Installation 65 SYMPTOM DIAGNOSIS 126 FRONT OIL SEAL 65 FRONT OIL SEAL : Removal and Installation 66 NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING 126 REAR OIL SEAL 66 REAR OIL SEAL : Removal and Installation 66 NVH Troubleshooting - Engine Noise 126 Use the Chart Below to Help You Find the Cause of the Symptom 127 CAMSHAFT 56 Exploded View 56 Removal and Installation 56 Inspection 60 CYLINDER HEAD 68 Exploded View 68 Removal and Installation 69 Disassembly and Assembly 70 Inspection 74 REMOVAL AND INSTALLATION 77 ENGINE ASSEMBLY 77 Exploded View 77 Removal and Installation 77 Inspection 81 DISASSEMBLY AND ASSEMBLY 83 ENGINE STAND SETTING 83 Setting 83 ENGINE UNIT 85 Disassembly 85 Assembly 85 OIL PAN (UPPER) 86 VQ25DE, VQ35DE PRECAUTION 128 PRECAUTIONS 128 Precaution for Procedure without Cowl Top Cover 128 Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" 128 Precaution Necessary for Steering Wheel Rotation after Battery Disconnect 128 Precaution for Drain Engine Coolant and Engine Oil 129 Precaution for Disconnecting Fuel Piping 129 Precaution for Removal and Disassembly 129 Precaution for Inspection, Repair and Replacement 129 Precaution for Assembly and Installation 129 Precaution for Angle Tightening 129 Precaution for Liquid Gasket 130 Definitions of Bank Names 131 PREPARATION 132 Exploded View 86 Removal and Installation 86 Inspection 89 PREPARATION 132 CYLINDER BLOCK 90 ON-VEHICLE MAINTENANCE 136 Exploded View 90 Disassembly and Assembly 91 Inspection 99 HOW TO SELECT PISTON AND BEARING 109 Description .109 Piston .109 Revision: 2008 December Special Service Tool 132 Commercial Service Tool 133 DRIVE BELT 136 Exploded View 136 Checking 136 Tension Adjustment 136 Removal and Installation 136 EM-2 J32 AIR CLEANER FILTER 138 Removal and Installation 138 Removal and Installation 178 Inspection 190 SPARK PLUG 139 REMOVAL AND INSTALLATION 192 A Exploded View 139 Removal and Installation 139 Inspection 140 ENGINE ASSEMBLY 192 EM CAMSHAFT VALVE CLEARANCE 141 C Inspection and Adjustment 141 COMPRESSION PRESSURE 146 Inspection 146 Exploded View 192 Removal and Installation 192 Inspection 200 DISASSEMBLY AND ASSEMBLY 201 ENGINE STAND SETTING 201 D Setting 201 ON-VEHICLE REPAIR 148 ENGINE UNIT 203 ENGINE COVER 148 Exploded View 148 Removal and Installation 148 Disassembly 203 Assembly 203 REAR TIMING CHAIN CASE 204 DRIVE BELT AUTO TENSIONER AND IDLER PULLEY 149 Exploded View 204 Disassembly and Assembly 205 Exploded View 149 Removal and Installation 149 CAMSHAFT 209 Exploded View 209 Removal and Installation 209 Inspection 213 AIR CLEANER AND AIR DUCT 150 Exploded View 150 Removal and Installation 150 Inspection 151 INTAKE MANIFOLD COLLECTOR 152 Exploded View 152 Removal and Installation 153 INTAKE MANIFOLD 156 Exploded View 156 Removal and Installation 156 Inspection 157 EXHAUST MANIFOLD AND THREE WAY CATALYST 158 Exploded View 158 Removal and Installation 158 Inspection 162 FRONT OIL SEAL 218 FRONT OIL SEAL : Removal and Installation 218 J REAR OIL SEAL 219 REAR OIL SEAL : Removal and Installation 219 K CYLINDER HEAD 221 Exploded View 221 Removal and Installation 222 Disassembly and Assembly 225 Inspection 229 L M CYLINDER BLOCK 232 Exploded View 232 Disassembly and Assembly 235 Inspection 244 N HOW TO SELECT PISTON AND BEARING 254 Description 254 Piston 254 Connecting Rod Bearing 255 Main Bearing 257 IGNITION COIL, SPARK PLUG AND ROCKER COVER 174 SERVICE DATA AND SPECIFICATIONS (SDS) 260 SERVICE DATA AND SPECIFICATIONS (SDS) 260 Exploded View 177 Revision: 2008 December H I Exploded View 169 Removal and Installation 169 Inspection 173 TIMING CHAIN 177 G VALVE OIL SEAL 218 VALVE OIL SEAL : Removal and Installation 218 FUEL INJECTOR AND FUEL TUBE 169 Exploded View 174 Removal and Installation 174 F OIL SEAL 218 OIL PAN AND OIL STRAINER 163 Exploded View 163 Removal and Installation 163 Inspection 167 E EM-3 General Specification 260 J32 O P Drive Belt .261 Spark Plug .261 Intake Manifold 261 Exhaust Manifold 261 Camshaft .261 Revision: 2008 December Cylinder Head 264 Cylinder Block 268 Main Bearing 271 Connecting Rod Bearing 272 EM-4 J32 NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING [MR20DE] < SYMPTOM DIAGNOSIS > SYMPTOM DIAGNOSIS A NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING NVH troubleshooting Chart INFOID:0000000003802136 EM C D E F G H I J K L M N O P JPBIA2251GB Locate the area where noise occurs Confirm the type of noise Specify the operating condition of engine Revision: 2008 December EM-5 J32 NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING [MR20DE] < SYMPTOM DIAGNOSIS > Check specified noise source If necessary, repair or replace these parts Operating condition of engine Location of noise Type of noise Top of engine Rocker cover Cylinder head Front of engine Front cover Front of engine Reference page After warmup When starting When idling When racing While driving Ticking or clicking C A — A B — Tappet noise Valve clearance EM-21 Rattle C A — A B C Camshaft bearing noise Camshaft journal oil clearance Camshaft runout EM-117 — Piston pin noise Piston to piston pin oil clearance Connecting rod bushing oil clearance EM-121 A Piston slap noise Piston to cylinder bore clearance Piston ring side clearance Piston ring end gap Connecting rod bend and torsion EM-121 Connecting rod bushing oil clearance Connecting rod bearing oil clearance EM-121 EM-124 Slap or knock Crankshaft pulley Cylinder block (Side of engine) Oil pan Source of noise Before warmup — Slap or rap A A — — — B B B B Check item Knock A B C B B B Connecting rod bearing noise Knock A B — A B C Main bearing noise Main bearing oil clearance Crankshaft runout EM-125 EM-121 Timing chain cracks and wear Timing chain tensioner operation EM-54 EM-45 Tapping or ticking A A — B B B Timing chain and chain tensioner noise Squeaking or fizzing A B — B — C Drive belt (Sticking or slipping) Drive belt deflection Creaking A B A B A B Drive belt (Slipping) Idler pulley bearing operation Squall Creak A B — B A B Water pump noise Water pump operation A: Closely related B: Related C: Sometimes related Revision: 2008 December EM-15 CO-18, "Exploded View" —: Not related EM-6 J32 PRECAUTIONS [MR20DE] < PRECAUTION > PRECAUTION A PRECAUTIONS Precaution for Procedure without Cowl Top Cover INFOID:0000000004221784 When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc EM C D E PIIB3706J Precaution Necessary for Steering Wheel Rotation after Battery Disconnect F INFOID:0000000004221783 NOTE: • Before removing and installing any control units, first turn the push-button ignition switch to the LOCK position, then disconnect both battery cables • After finishing work, confirm that all control unit connectors are connected properly, then re-connect both battery cables • Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work If a DTC is detected, perform trouble diagnosis according to self-diagnosis results This vehicle is equipped with a push-button ignition switch and a steering lock unit If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure below before starting the repair operation Connect both battery cables NOTE: Supply power using jumper cables if battery is discharged Turn the push-button ignition switch to ACC position (At this time, the steering lock will be released.) Disconnect both battery cables The steering lock will remain released with both battery cables disconnected and the steering wheel can be turned Perform the necessary repair operation When the repair work is completed, re-connect both battery cables With the brake pedal released, turn the push-button ignition switch from ACC position to ON position, then to LOCK position (The steering wheel will lock when the push-button ignition switch is turned to LOCK position.) Perform self-diagnosis check of all control units using CONSULT-III Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000004221782 The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this Service Manual WARNING: • To avoid rendering the SRS inoperative, 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 Revision: 2008 December H I J OPERATION PROCEDURE G EM-7 J32 K L M N O P PRECAUTIONS [MR20DE] < PRECAUTION > • Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system For removal of Spiral Cable and Air Bag Module, see the “SRS AIR BAG” • Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS WARNING: • When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric 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 minutes before performing any service Draining Engine Coolant INFOID:0000000003802140 Drain engine coolant and engine oil when the engine is cooled Disconnecting Fuel Piping INFOID:0000000003802141 • Before starting work, check no fire or spark producing items are in the work area • Release fuel pressure before disconnecting and disassembly • After disconnecting pipes, plug openings to stop fuel leakage Removal and Disassembly INFOID:0000000003802142 • When instructed to use SST, use specified tools Always be careful to work safely, avoid forceful or uninstructed operations • Exercise maximum care to avoid damage to mating or sliding surfaces • Dowel pins are used for several parts alignment When replacing and reassembling parts with dowel pins, check that dowel pins are installed in the original position • Cover openings of engine system with a tape or equivalent, if necessary, to seal out foreign materials • Mark and arrange disassembly parts in an organized way for easy troubleshooting and reassembly • When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally opposite, and so on If the order of loosening is specified, exactly as specified Power tools may be used in the step Inspection, Repair and Replacement INFOID:0000000003802143 Before repairing or replacing, thoroughly inspect parts Inspect new replacement parts in the same way, and replace if necessary Assembly and Installation INFOID:0000000003802144 • Use torque wrench to tighten bolts or nuts to specification • When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the ones in center, then ones on inside and outside diagonally in this order If the order of tightening is specified, exactly as specified • Replace with new gasket, packing, oil seal or O-ring • Thoroughly wash, clean, and air-blow each part Carefully check engine oil or engine coolant passages for any restriction and blockage • Avoid damaging sliding or mating surfaces Completely remove foreign materials such as cloth lint or dust Before assembly, oil sliding surfaces well • Release air within route when refilling after draining engine coolant • After repairing, start the engine and increase engine speed to check engine coolant, fuel, engine oil, and exhaust gases for leakage Parts Requiring Angle Tightening INFOID:0000000003802145 • Use the angle wrench [SST: KV10112100] for the final tightening of the following engine parts: - Camshaft sprocket (INT) bolt Revision: 2008 December EM-8 J32 PRECAUTIONS [MR20DE] < PRECAUTION > - Cylinder head bolts - Main bearing cap bolts A - Connecting rod cap bolts - Crankshaft pulley bolt (No the angle wrench is required as bolt flange is provided with notches for angle tightening) EM • Do not use a torque value for final tightening • The torque value for these parts are for a preliminary step • Ensure thread and seat surfaces are clean and coated with engine oil C Liquid Gasket INFOID:0000000003802146 REMOVAL OF LIQUID GASKET SEALING • After removing mounting nuts and bolts, separate the mating surface using the seal cutter [SST: KV10111100] (A) and remove old liquid gasket sealing CAUTION: Be careful not to damage the mating surfaces • Tap the seal cutter [SST: KV10111100] to insert it (B), and then slide it (C) by tapping on the side as shown in the figure • In areas where the seal cutter [SST: KV10111100] is difficult to use, use a plastic hammer to lightly tap the parts, to remove it CAUTION: If for some unavoidable reason tool such as a screwdriver is used, be careful not to damage the mating surfaces D E F G JPBIA0052ZZ LIQUID GASKET APPLICATION PROCEDURE H Using a scraper (A), remove old liquid gasket adhering to the liquid gasket application surface and the mating surface • Remove liquid gasket completely from the groove of the liquid gasket application surface, mounting bolts, and bolt holes Wipe the liquid gasket application surface and the mating surface with white gasoline (lighting and heating use) to remove adhering moisture, grease and foreign materials I J K JPBIA0053ZZ Attach liquid gasket tube to the tube presser (commercial service tool) Use Genuine Liquid Gasket or equivalent Apply liquid gasket without breaks to the specified location with the specified dimensions • If there is a groove for liquid gasket application, apply liquid gasket to the groove L M N EMA0622D O P Revision: 2008 December EM-9 J32 PRECAUTIONS < PRECAUTION > • As for bolt holes, normally apply liquid gasket inside the holes Occasionally, it should be applied outside the holes Check to read the text of this manual • Within five minutes of liquid gasket application, install the mating component • If liquid gasket protrudes, wipe it off immediately • Do not retighten mounting bolts or nuts after the installation • After 30 minutes or more have passed from the installation, fill engine oil and engine coolant CAUTION: If there are specific instructions in this manual, observe them Revision: 2008 December EM-10 [MR20DE] SEM159F J32 ENGINE CONTROL SYSTEM SYMPTOMS [VQ25DE, VQ35DE (TYPE 2)] < SYMPTOM DIAGNOSIS > SYMPTOM DIAGNOSIS A ENGINE CONTROL SYSTEM SYMPTOMS Symptom Table INFOID:0000000003901155 EC SYSTEM — BASIC ENGINE CONTROL SYSTEM C ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) AL AM HA 2 4 2 4 4 4 4 1 1 2 2 LACK OF POWER/POOR ACCELERATION AK SPARK KNOCK/DETONATION AJ HESITATION/SURGING/FLAT SPOT AH ENGINE STALL AG HARD/NO START/RESTART (EXCP HA) Air AF AA AB AC AD AE Fuel pump circuit 1 Fuel pressure regulator system 3 4 Fuel injector circuit 1 Evaporative emission system 3 4 4 4 Warranty symptom code Fuel HIGH IDLE/LOW IDLE SYMPTOM Positive crankcase ventilation system D E Reference page G H EC-1351 EC-1426 EC-1348 EC-1139 3 EC-1371 EC-1073 1 3 Incorrect ignition timing adjustment 3 1 1 1 EC-1073 Ignition circuit 1 2 2 2 EC-1365 Power supply and ground circuit 2 3 3 3 EC-1185 Engine coolant temperature sensor circuit 2 EC-1197 3 Air fuel ratio (A/F) sensor circuit EC-1329 2 2 Knock sensor circuit 2 2 EC-1205, EC-1227, EC-1261, EC-1263, EC-1319 EC-1250, EC-1312, EC-1315, EC-1322 EC-1230 Crankshaft position sensor (POS) circuit 2 EC-1233 Camshaft position sensor (PHASE) circuit EC-1237 Vehicle speed signal circuit Revision: 2008 December 3 EC-1415 K L M EC-1202 Throttle position sensor circuit Accelerator pedal position sensor circuit EC-1304, EC-1310 Electric throttle control actuator Mass air flow sensor circuit I J Incorrect idle speed adjustment Ignition F EC-1241 J32 N O P ENGINE CONTROL SYSTEM SYMPTOMS [VQ25DE, VQ35DE (TYPE 2)] < SYMPTOM DIAGNOSIS > ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) Warranty symptom code HARD/NO START/RESTART (EXCP HA) SYMPTOM AA AB AC AD AE AF AG AH AJ AK AL AM HA Power steering pressure sensor circuit ECM 2 Intake valve timing control solenoid valve circuit 3 PNP signal circuit 3 Reference page EC-1243 3 3 3 2 3 3 3 EC-1245, EC-1247 EC-1194 EC-1252 VIAS control solenoid valve circuit EC-1293 VIAS control solenoid valve circuit EC-1296 Refrigerant pressure sensor circuit Electrical load signal circuit Air conditioner circuit ABS actuator and electric unit (control unit) EC-1372 2 3 3 EC-1340 3 HAC-43 BRC-87 - 6: The numbers refer to the order of inspection (continued on the next figure) SYSTEM — ENGINE MECHANICAL & OTHER Revision: 2008 December EC-1416 J32 ENGINE CONTROL SYSTEM SYMPTOMS [VQ25DE, VQ35DE (TYPE 2)] < SYMPTOM DIAGNOSIS > SYMPTOM Fuel Fuel tank Fuel piping HARD/NO START/RESTART (EXCP HA) ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) Warranty symptom code A AA AB AC AD AE AF AG AH AJ AK AL AM HA 5 5 5 Air F G — 5 5 5 EM-150 Air cleaner EM-150 5 5 5 5 H — Air duct Electric throttle control actuator I EM-150 J EM-153 Air leakage from intake manifold/ Collector/Gasket EM-153, EM-156 Battery PG-144 Generator circuit Engine E — Air leakage from air duct (Mass air flow sensor — electric throttle control actuator) Cranking D FL-5 Valve deposit Poor fuel (Heavy weight gasoline, Low octane) C Reference page FL-11 Vapor lock EC 1 1 1 CHG-24 Signal plate EM-229 PNP signal TM-53, TM-402 Cylinder head Cylinder head gasket 5 5 5 5 L STR-6, STR-8 Starter circuit K M EM-222 N Cylinder block Piston Piston ring Connecting rod 6 6 6 6 O EM-235 P Bearing Crankshaft Revision: 2008 December EC-1417 J32 ENGINE CONTROL SYSTEM SYMPTOMS [VQ25DE, VQ35DE (TYPE 2)] < SYMPTOM DIAGNOSIS > Valve mechanism ENGINE STALL HESITATION/SURGING/FLAT SPOT SPARK KNOCK/DETONATION LACK OF POWER/POOR ACCELERATION HIGH IDLE/LOW IDLE ROUGH IDLE/HUNTING IDLING VIBRATION SLOW/NO RETURN TO IDLE OVERHEATS/WATER TEMPERATURE HIGH EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION BATTERY DEAD (UNDER CHARGE) Warranty symptom code HARD/NO START/RESTART (EXCP HA) SYMPTOM AA AB AC AD AE AF AG AH AJ AK AL AM HA Timing chain EM-190 Camshaft EM-209 Intake valve timing control 5 5 5 5 Intake valve Exhaust manifold/Tube/Muffler/ Gasket 5 5 5 5 Three way catalyst Lubrication Cooling Oil pan/Oil strainer/Oil pump/Oil filter/Oil gallery/Oil cooler EM-190 Exhaust valve Exhaust Reference page 5 5 5 5 EM-222 EM-158, EX-10 LU-15, LU18, LU-19, LU-21 Oil level (Low)/Filthy oil LU-15 Radiator/Hose/Radiator filler cap CO-35, CO-35 Thermostat Water pump Water gallery 5 5 5 5 Cooling fan CO-41 CO-26 CO-39 Coolant level (Low)/Contaminated coolant NVIS (NISSAN Vehicle Immobilizer System — NATS) CO-46 1 CO-32 SEC-17 - 6: The numbers refer to the order of inspection Revision: 2008 December EC-1418 J32 NORMAL OPERATING CONDITION [VQ25DE, VQ35DE (TYPE 2)] < SYMPTOM DIAGNOSIS > NORMAL OPERATING CONDITION Description A INFOID:0000000003901156 FUEL CUT CONTROL (AT NO LOAD AND HIGH ENGINE SPEED) EC If the engine speed is above 1,400 rpm under no load (for example, the selector lever position is P or N and engine speed is over 1,400 rpm) fuel will be cut off after some time The exact time when the fuel is cut off varies based on engine speed Fuel cut will be operated until the engine speed reaches 1,000 rpm, then fuel cut will be cancelled NOTE: This function is different from deceleration control listed under Multiport Fuel Injection (MFI) System, EC-1089, "System Description" C D E F G H I J K L M N O P Revision: 2008 December EC-1419 J32 PRECAUTIONS [VQ25DE, VQ35DE (TYPE 2)] < PRECAUTION > PRECAUTION PRECAUTIONS Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000003960671 The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this Service Manual WARNING: • To avoid rendering the SRS inoperative, 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 incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system For removal of Spiral Cable and Air Bag Module, see the “SRS AIR BAG” • Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS WARNING: • When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric 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 minutes before performing any service Precaution for Procedure without Cowl Top Cover INFOID:0000000004807593 When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc PIIB3706J On Board Diagnostic (OBD) System of Engine and CVT INFOID:0000000003901160 The ECM has an on board diagnostic system It will illuminate the malfunction indicator lamp (MIL) to warn the driver of a malfunction causing emission deterioration CAUTION: • Always turn the ignition switch OFF and disconnect the negative battery cable before any repair or inspection work The open/short circuit of related switches, sensors, solenoid valves, etc will cause the MIL to illuminate • Always connect and lock the connectors securely after work A loose (unlocked) connector will cause the MIL to illuminate 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-locking type harness connector For description and how to disconnect, refer to PG-131, "Description" • Always to route and secure the harnesses properly after work The interference of the harness with a bracket, etc may cause the MIL to illuminate due to the short circuit Revision: 2008 December EC-1420 J32 PRECAUTIONS [VQ25DE, VQ35DE (TYPE 2)] < PRECAUTION > • Always connect rubber tubes properly after work A misconnected or disconnected rubber tube may cause the MIL to illuminate due to the malfunction of the EVAP system or fuel injection system, etc • Always erase the unnecessary malfunction information (repairs completed) from the ECM and TCM (Transmission control module) before returning the vehicle to the customer General Precautions INFOID:0000000003901161 • Always use a 12 volt battery as power source • Never attempt to disconnect battery cables while engine is running • Before connecting or disconnecting the ECM harness connector, turn ignition switch OFF and disconnect negative battery cable Failure to so may damage the ECM because battery voltage is applied to ECM even if ignition switch is turned OFF • Before removing parts, turn ignition switch OFF and then disconnect battery ground cable A EC C D E SEF289H F • Never disassemble ECM • If a battery cable is disconnected, the memory will return to the ECM value The ECM will now start to self-control at its initial value Thus, engine operation can vary slightly in this case However, this is not an indication of a malfunction Never replace parts because of a slight variation • If the battery is disconnected, the following emission-related diagnostic information will be lost within 24 hours - Diagnostic trouble codes - 1st trip diagnostic trouble codes - Freeze frame data - 1st trip freeze frame data - System readiness test (SRT) codes - Test values • When connecting ECM harness connector, fasten (B) it securely with a lever (1) as far as it will go as shown in the figure G H I J K : ECM A : Loosen L PBIB2947E • When connecting or disconnecting pin connectors into or from ECM, never damage pin terminals (bends or break) Check that there are not any bends or breaks on ECM pin terminal, when connecting pin connectors • Securely connect ECM harness connectors A poor connection can cause an extremely high (surge) voltage to develop in coil and condenser, thus resulting in damage to ICs • Keep engine control system harness at least 10 cm (4 in) away from adjacent harness, to prevent engine control system malfunctions due to receiving external noise, degraded operation of ICs, etc • Keep engine control system parts and harness dry Revision: 2008 December EC-1421 M N O P PBIB0090E J32 PRECAUTIONS < PRECAUTION > • Before replacing ECM, perform ECM Terminals and Reference Value inspection and check ECM functions properly Refer to EC-1379, "Reference Value" • Handle mass air flow sensor carefully to avoid damage • Never clean mass air flow sensor with any type of detergent • Never disassemble electric throttle control actuator • Even a slight leakage in the air intake system can cause serious incidents • Never shock or jar the camshaft position sensor (PHASE), crankshaft position sensor (POS) [VQ25DE, VQ35DE (TYPE 2)] MEF040D • After performing each TROUBLE DIAGNOSIS, perform DTC Confirmation Procedure or Component Function Check The DTC should not be displayed in the DTC Confirmation Procedure if the repair is completed The Component Function Check should be a good result if the repair is completed SAT652J • When measuring ECM signals with a circuit tester, never allow the two tester probes to contact Accidental contact of probes will cause a short circuit and damage the ECM power transistor • Never 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 SEF348N Revision: 2008 December EC-1422 J32 PRECAUTIONS < PRECAUTION > • B1 indicates bank 1, B2 indicates bank as shown in the figure • Never operate fuel pump when there is no fuel in lines • Tighten fuel hose clamps to the specified torque [VQ25DE, VQ35DE (TYPE 2)] A EC C SEC893C D • Never depress accelerator pedal when starting • Immediately after starting, never rev up engine unnecessarily • Never rev up engine just prior to shutdown E F G SEF709Y • When installing C.B ham radio or a mobile phone, be sure to observe the following as it may adversely affect electronic control systems depending on installation location - Keep the antenna as far as possible from the electronic control units - Keep the antenna feeder line more than 20 cm (8 in) away from the harness of electronic controls Never let them run parallel for a long distance - Adjust the antenna and feeder line so that the standing-wave ratio can be kept smaller - Be sure to ground the radio to vehicle body H I J K SEF708Y L M N O P Revision: 2008 December EC-1423 J32 PREPARATION [VQ25DE, VQ35DE (TYPE 2)] < PREPARATION > PREPARATION PREPARATION Special Service Tools INFOID:0000000004414695 Tool number Tool name Description EG17550000 Break-out box Measuring ECM signals with a circuit tester ZZA1194D EG17680000 Y-cable adapter Measuring ECM signals with a circuit tester PBIA9379J KV10118400 Fuel tube adapter Measuring fuel pressure PBIB3043E Commercial Service Tools INFOID:0000000004414696 Tool name (SPX-North America No.) Description Quick connector release Removes fuel tube quick connectors in engine room (Available in SEC 164 of PARTS CATALOG: Par No 16441 6N210) PBIC0198E Socket wrench Removes and installing engine coolant temperature sensor S-NT705 Revision: 2008 December EC-1424 J32 PREPARATION [VQ25DE, VQ35DE (TYPE 2)] < PREPARATION > Tool name (SPX-North America No.) Description A Reconditions the exhaust system threads before installing a new oxygen sensor Use with antiseize lubricant shown below a: 18 mm diameter with pitch 1.5 mm for Zirconia Oxygen Sensor b: 12 mm diameter with pitch 1.25 mm for Titania Oxygen Sensor Oxygen sensor thread cleaner i.e.: (J-43897-18) (J-43897-12) EC C AEM488 Anti-seize lubricant i.e.: Lubricates oxygen sensor thread cleaning tool when reconditioning exhaust system threads (PermatexTM 133AR or equivalent meeting MIL specification MIL-A-907) D E S-NT779 F G H I J K L M N O P Revision: 2008 December EC-1425 J32 FUEL PRESSURE [VQ25DE, VQ35DE (TYPE 2)] < ON-VEHICLE MAINTENANCE > ON-VEHICLE MAINTENANCE FUEL PRESSURE Inspection INFOID:0000000004414690 FUEL PRESSURE RELEASE With CONSULT-III Turn ignition switch ON Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III Start engine After engine stalls, crank it or times to release all fuel pressure Turn ignition switch OFF Without CONSULT-III Remove fuel pump fuse (2) located in IPDM E/R (1) Start engine After engine stalls, crank it or times to release all fuel pressure Turn ignition switch OFF Reinstall fuel pump fuse after servicing fuel system JMBIA1659ZZ FUEL PRESSURE CHECK CAUTION: Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger NOTE: • Prepare pans or saucers under the disconnected fuel line because the fuel may spill out The fuel pressure cannot be completely released because J32 models not have fuel return system • Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick connector o-ring maintains seal ability Release fuel pressure to zero Remove fuel hose using Quick Connector Release (commercial service tool) • Do not twist or kink fuel hose because it is plastic hose • Keep fuel hose connections clean Install Fuel tube adapter [SST (KV10118400)] (B) and Fuel pressure gauge (A) as shown in figure • Do not distort or bend fuel rail tube when installing fuel pressure gauge • When reconnecting fuel hose, check the original fuel hose for damage and abnormality Turn ignition switch ON (reactivate fuel pump) and check for fuel leakage Start engine and check for fuel leakage Read the indication of fuel pressure gauge kit JMBIA1392ZZ • During fuel pressure check, check for fuel leakage from fuel connection every minutes At idling : Approximately 350 kPa (3.50 bar, 3.57 kg/cm2, 51 psi) If result is unsatisfactory, go to next step Check the following Revision: 2008 December EC-1426 J32 FUEL PRESSURE [VQ25DE, VQ35DE (TYPE 2)] < ON-VEHICLE MAINTENANCE > • Fuel hoses and fuel tubes for clogging • Fuel filter for clogging A • Fuel pump • Fuel pressure regulator for clogging If OK, replace fuel pressure regulator EC If NG, repair or replace malfunctioning part 10 Before disconnecting Fuel Pressure Gauge and Fuel tube Adapter, release fuel pressure to zero C D E F G H I J K L M N O P Revision: 2008 December EC-1427 J32 EVAPORATIVE EMISSION SYSTEM [VQ25DE, VQ35DE (TYPE 2)] < ON-VEHICLE REPAIR > ON-VEHICLE REPAIR EVAPORATIVE EMISSION SYSTEM Inspection a b INFOID:0000000004805931 Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections, chafing and deterioration Check EVAP canister as per the following: Block port (B) Orally blow air through port (A) Check that air flows freely through port (C) Block port (A) Orally blow air through port (B) Check that air flows freely through port (C) PBIB0663E a Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc Wipe clean valve housing SEF989X b Check valve opening pressure and vacuum Pressure: Vacuum: c 15.3 - 20.0 kPa (0.153 - 0.200 bar, 0.156 - 0.204 kg/ cm2, 2.22 - 2.90 psi) –6.0 to –3.4 kPa (–0.06 bar to –-0.034bar, –0.061 to – 0.035 kg/cm2, –0.87 to –0.49 psi) If out of specification, replace fuel filler cap as an assembly SEF943S Revision: 2008 December EC-1428 J32 SERVICE DATA AND SPECIFICATIONS (SDS) < SERVICE DATA AND SPECIFICATIONS (SDS) [VQ25DE, VQ35DE (TYPE 2)] SERVICE DATA AND SPECIFICATIONS (SDS) A SERVICE DATA AND SPECIFICATIONS (SDS) Idle Speed INFOID:0000000004414683 Condition Specification C 600 ± 50 rpm No load* (in P or N position) EC *: Under the following conditions • A/C switch: OFF D • Electric load: OFF (Lights, heater fan & rear window defogger) • Steering wheel: Kept in straight-ahead position Ignition Timing INFOID:0000000004414684 Condition Specification E F 12 ± 5°BTDC No load* (in P or N position) *: Under the following conditions G • A/C switch: OFF • Electric load: OFF (Lights, heater fan & rear window defogger) • Steering wheel: Kept in straight-ahead position H I J K L M N O P Revision: 2008 December EC-1429 J32