ELECTRICAL & POWER CONTROLSECTION CHARGING SYSTEM CHG A B C D CONTENTS BASIC INSPECTION ................................ .... 2 DIAGNOSIS AND REPAIR WORKFLOW ..... ..... 2 Work Flow ........................................................... ...... 2 Wiring Diagram - CHARGING SYSTEM - ........... ....14 E F SYMPTOM DIAGNOSIS ........................... ... 17 CHARGING SYSTEM ....................................... 17 Symptom Table ................................................... ....17 G FUNCTION DIAGNOSIS ........................... .... 5 CHARGING SYSTEM ..................................... ..... 5 System Diagram .................................................. ...... 5 System Description ............................................. ...... 5 Component Parts Location .................................. ...... 5 Component Description ...................................... ...... 5 PRECAUTION ........................................... ... 18 PRECAUTIONS ................................................. 18 Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ............................................................. ....18 H I POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM ............................ ..... 7 System Diagram .................................................. ...... 7 System Description ............................................. ...... 7 Component Parts Location .................................. ...... 7 Component Description ....................................... ...... 8 PREPARATION ........................................ ... 19 PREPARATION ................................................. 19 Special Service Tools .......................................... ....19 J K ON-VEHICLE MAINTENANCE ................. ... 20 CHARGING SYSTEM PRELIMINARY INSPECTION ........................................................ 20 Inspection Procedure ........................................... ....20 L COMPONENT DIAGNOSIS ...................... .... 9 B TERMINAL CIRCUIT .................................. ..... 9 Description .......................................................... ...... 9 Diagnosis Procedure ........................................... ...... 9 ON-VEHICLE REPAIR .............................. ... 21 CHG ALTERNATOR .................................................. 21 Exploded View ..................................................... ....21 Removal and Installation ..................................... ....22 Disassembly and Assembly ................................. ....23 Inspection ............................................................ ....24 N L TERMINAL CIRCUIT (OPEN) ..................... ....10 Description .......................................................... .... 10 Diagnosis Procedure ........................................... .... 10 L TERMINAL CIRCUIT (SHORT) ................... ....12 Description .......................................................... .... 12 Diagnosis Procedure ........................................... .... 12 O S TERMINAL CIRCUIT .................................. ....13 Description .......................................................... .... 13 Diagnosis Procedure ........................................... .... 13 SERVICE DATA AND SPECIFICATIONS (SDS) ......................................................... ... 25 SERVICE DATA AND SPECIFICATIONS (SDS) ................................................................. 25 Alternator ............................................................. ....25 P CHARGING SYSTEM ..................................... ....14 CHG-1 DIAGNOSIS AND REPAIR WORKFLOW < BASIC INSPECTION > BASIC INSPECTION DIAGNOSIS AND REPAIR WORKFLOW Work Flow OVERALL SEQUENCE INFOID:0000000003860762 JPMIA1008GB DETAILED FLOW CHG-2 DIAGNOSIS AND REPAIR WORKFLOW < BASIC INSPECTION > 1. L CHG 7. >> GO TO 2. "Diagnosis Procedure". After finishing the inspection.INSPECTION WITH CHARGE WARNING LAMP (ENGINE AT 2. • After selecting “ENGINE” of “SELECT SYSTEM” using CONSULT-III.500 rpm. "Diagnosis Procedure". Does the charge warning lamp illuminate? YES >> GO TO 4. DTC (P1550 P1554) of the engine might remain. P 9. measure “B” terminal voltage. NO >> INSPECTION END J K 6. and disconnect the battery current sensor connector. Is the inspection result normal? CHG-3 .“S” TERMINAL CIRCUIT INSPECTION Check “S” terminal circuit. NO >> Repair as needed. Refer to CHG-20.MEASURE “B” TERMINAL VOLTAGE Engine start. NO >> GO TO 6.500 rpm. connect the battery current sensor connector and erase the self-diagnostic results history of the engine using CONSULT-III. What voltage does the measurement result show? Less than 13.0 V>>Replace IC regulator.PRELIMINARY INSPECTION Perform the preliminary inspection. F G 4. (When the DUTY value is 0 or 100 %. "Diagnosis Procedure".“L” TERMINAL CIRCUIT (SHORT) INSPECTION Check “L” terminal circuit (short).] >> GO TO 3.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON) Turn the ignition switch ON. Refer to CHG-9. A B 2. When keeping engine running at 2. Refer to CHG-12.0 V>>GO TO 9. C D E 3. Refer to CHG-13. More than 16. "Inspection Procedure". H I 5. set the DUTY value of “ALTERNATOR DUTY” to 0 % by selecting “ALTERNATOR DUTY” of “Active Test”. NO >> Repair as needed. Is the inspection result normal? YES >> GO TO 8. NO >> GO TO 11.500 RPM) Increase and maintain the engine speed at 2.“B” TERMINAL CIRCUIT INSPECTION Check “B” terminal circuit. Is the inspection result normal? YES >> GO TO 7. [However. N O 8. Does the charge warning lamp turn OFF? YES >> GO TO 5. Does the charge warning lamp illuminate? YES >> GO TO 8. Continue “Active Test” until the end of inspection.STOP POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM Stop the operation of the power generation voltage variable control in either of the following procedures.INSPECTION WITH CHARGE WARNING LAMP (IDLING) Start the engine and run it at idle.) • Turn the ignition switch OFF. the normal power generation is performed according to the characteristic of the IC regulator of the alternator. NO >> Repair as needed.DIAGNOSIS AND REPAIR WORKFLOW < BASIC INSPECTION > YES >> GO TO 10. Refer to CHG-10. 11. 12. Does the charge warning lamp illuminate? YES >> GO TO 12.DISASSEMBLE AND CHECK ALTERNATOR Check the following conditions. 13. NO >> GO TO 13. 2. Turn the ignition switch ON. NO >> Repair as needed. >> Repair as needed.DISASSEMBLE AND CHECK ALTERNATOR Check the following conditions. 10. "Diagnosis Procedure". NO >> Repair as needed. "Inspection". • Rotor coil • Rotor slip ring • Brush • Stator coil Are these normal? YES >> Replace IC regulator and/or diode assembly.CHECK “L” TERMINAL CIRCUIT (OPEN) Check “L” terminal circuit (open). Disconnect alternator connector and ground “L” harness side. CHG-4 . • Rotor coil • Rotor slip ring • Brush Are these normal? YES >> Replace IC regulator. Refer to CHG-24.INSPECTION WITH CHARGE WARNING LAMP (IGNITION SWITCH IS ON) 1. Refer to CHG-24. "Inspection". J INFOID:0000000003860510 Component Parts Location K INFOID:0000000003860511 L CHG N JPLIA0887ZZ O 1. A. B.CHARGING SYSTEM < FUNCTION DIAGNOSIS > FUNCTION DIAGNOSIS CHARGING SYSTEM System Diagram INFOID:0000000003860509 A B C D E F G H I JPMIA0426GB System Description The voltage output is controlled by the IC voltage regulator. Alternator Cylinder block bank2 side 2. Charge warning lamp Combination meter Component Description P INFOID:0000000003860512 CHG-5 . Combination meter (Charge warning lamp) CHG-6 . if any of the following symptoms occur while alternator is operating: • Excessive voltage is produced. • No voltage is produced.CHARGING SYSTEM < FUNCTION DIAGNOSIS > Component part Alternator Description The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged. The IC voltage regulator warning function activates to illuminate the charge warning lamp. POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM < FUNCTION DIAGNOSIS > POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM System Diagram INFOID:0000000003860517 A B C D E F JPMIA0632GB G System Description INFOID:0000000003860518 By performing the power generation voltage variable control. C. A. the power generation is performed according to the characteristic of the IC voltage regulator of the alternator. 4. NOTE: When any malfunction is detected in the power generation voltage variable control system. IPDM E/R Battery 3. the engine load due to the power generation of the alternator is reduced and fuel consumption is decreased. B. H I Component Parts Location INFOID:0000000003860519 J K L CHG N JPLIA0888ZZ O 1. Battery current sensor Cylinder block bank2 side P CHG-7 . ECM Alternator Engine room dash panel (LH) 2. ECM judges whether to perform the power generation voltage variable control according to the battery condition. IPDM E/R converts the received power generation command value into the power generation command signal (PWM signal) and sends it to the IC voltage regulator.POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM < FUNCTION DIAGNOSIS > Component Description Component part Description INFOID:0000000003860520 Battery current sensor Battery current sensor is installed to the battery cable at the negative terminal. the alternator performs the normal power generation according to the characteristic of the IC voltage regulator. ECM judges the battery condition based on this signal. ECM IPDM E/R Alternator (IC voltage regulator) CHG-8 . and it detects the charging/discharging current of the battery and sends the voltage signal to ECM according to the current value. ECM calculates the target power generation voltage according to the battery condition and sends the calculated value as the power generation command value to IPDM E/R. IC voltage regulator controls the power generation voltage by the target power generation voltage based on the received power generation command signal. Battery current sensor detects the charging/discharging current of the battery. When performing the power generation voltage variable control. When there is no power generation command signal. Confirm repair by performing complete Starting/Charging system test. 2. Terminals (+) Battery positive terminal (–) Alternator “B” terminal F59 Terminal 1 Less than 0. then engine running at idle and warm. NO >> Repair “B” terminal connection. 2. Is the inspection result normal? YES >> GO TO 2. Terminals (+) Alternator “B” terminal F59 Terminal 1 (–) Ground Voltage (Approx. NO >> Check harness for open between alternator and fusible link.B TERMINAL CIRCUIT < COMPONENT DIAGNOSIS > COMPONENT DIAGNOSIS B TERMINAL CIRCUIT Description Diagnosis Procedure INFOID:0000000003860521 A B “B” terminal circuit supplies power to charge the battery and to operate the vehicle’s electrical system.2 V Voltage (Approx.CHECK “B” TERMINAL CONNECTION 1.CHECK “B” TERMINAL CIRCUIT Check voltage between alternator “B” terminal and ground. INFOID:0000000003860522 C 1. Refer to CHG-2.CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST) 1. Refer to Technical Service Bulletin. "Work Flow". Check if “B” terminal is clean and tight. Turn ignition switch OFF.) J K L Is the inspection result normal? YES >> “B” terminal circuit is normal. CHG N O P CHG-9 . Start engine. D E 2. Check voltage between battery positive terminal and alternator “B” terminal. I 3.) F G H Battery voltage Is the inspection result normal? YES >> GO TO 3. NO >> Check harness between battery and alternator for poor continuity. 4. the charge warning lamp will go off. When the alternator is providing sufficient voltage with the engine running. Apply ground to alternator harness connector terminal. Disconnect the battery cable from the negative terminal. Refer to Technical Service Bulletin. Alternator harness connector Connector No. 3. Combination meter harness connector Connector No. 12C Continuity Existed Is the inspection result normal? YES >> GO TO 5. Disconnect the combination meter connector. M34 Terminal No. Turn ignition switch OFF. M3 Fuse block Terminal No. 25 Continuity Existed Is the inspection result normal? YES >> GO TO 4. 3 Combination meter harness connector Connector No.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check continuity between combination meter harness connector and fuse block. Confirm repair by performing complete Starting/Charging system test. Check condition of the charge warning lamp with the ignition switch in the ON position. M34 Terminal No. Check if “L” terminal is clean and tight.CHECK POWER SUPPLY CIRCUIT 1. 2. NO >> Repair “L” terminal connection. If the charge warning lamp illuminates with the engine running. Condition Ground Ignition switch position ON Charge warning lamp illuminate Alternator harness connector F60 Terminal 3 Does it illuminate? YES >> “L” terminal circuit is normal. F60 Terminal No. 3.CHECK “L” TERMINAL CIRCUIT (OPEN) 1.L TERMINAL CIRCUIT (OPEN) < COMPONENT DIAGNOSIS > L TERMINAL CIRCUIT (OPEN) Description INFOID:0000000003860523 The “L” terminal circuit controls the charge warning lamp. CHG-10 .CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 1. 2. Disconnect alternator connector. The charge warning lamp illuminates when the ignition switch is set to ON or START. Check continuity between alternator harness connector and combination meter harness connector. 2 Connector No. 2. Diagnosis Procedure INFOID:0000000003860524 1. NO >> Repair the harness. Refer to CHG-2. "Work Flow". Is the inspection result normal? YES >> GO TO 2. Connect the battery cable to the negative terminal.CHECK “L” TERMINAL CONNECTION 1. NO >> GO TO 3. 3. 2. a malfunction is indicated. 5. NO >> Repair the harness or connector. A Terminals (+) Combination meter harness connector M34 Terminal 2 (–) Condition Voltage (Approx. D E F G H I J K L CHG N O P CHG-11 .L TERMINAL CIRCUIT (OPEN) < COMPONENT DIAGNOSIS > 2.CHARGING SYSTEM -". "Wiring Diagram . Check voltage between combination meter harness connector and ground.) B Ground When the ignition switch is in ON position Battery voltage C Is the inspection result normal? YES >> Replace combination meter. NO >> Inspect the power supply circuit. Refer to CHG-14. When the alternator is providing sufficient voltage with the engine running. 4. NO >> Refer to CHG-2. M34 Terminal No. the charge warning lamp will go off. Check continuity between combination meter harness connector and ground. Combination meter harness connector Connector No. CHG-12 . 3. Disconnect the battery cable from the negative terminal.CHECK “L” TERMINAL CIRCUIT (SHORT) 1. 2. Diagnosis Procedure INFOID:0000000003860526 1. 2. If the charge warning lamp illuminates with the engine running. 2. 25 Ground Continuity Not existed Is the inspection result normal? YES >> Replace combination meter. Turn ignition switch ON. Does charge warning lamp illuminate? YES >> GO TO 2. NO >> Repair the harness. Disconnect combination meter connector. The charge warning lamp illuminates when the ignition switch is set to ON or START. 3. Turn ignition switch OFF. Disconnect alternator connector. a malfunction is indicated.L TERMINAL CIRCUIT (SHORT) < COMPONENT DIAGNOSIS > L TERMINAL CIRCUIT (SHORT) Description INFOID:0000000003860525 The “L” terminal circuit controls the charge warning lamp.CHECK HARNESS CONTINUITY (SHORT CIRCUIT) 1. "Work Flow". Turn the ignition switch OFF. The “S” terminal circuit detects the battery voltage to adjust the alternator output voltage with the IC voltage regulator. D E 2. NO >> Check harness for open between alternator and fuse. Turn ignition switch OFF.S TERMINAL CIRCUIT < COMPONENT DIAGNOSIS > S TERMINAL CIRCUIT Description INFOID:0000000003860527 A The output voltage of the alternator is controlled by the IC voltage regulator at the “S” terminal detecting the input voltage. "Work Flow". 2. Check if “S” terminal is clean and tight. Refer to Technical Service Bulletin.CHECK “S” TERMINAL CONNECTION 1. NO >> Repair “S” terminal connection. I J K L CHG N O P CHG-13 . Is the inspection result normal? YES >> GO TO 2. B Diagnosis Procedure C INFOID:0000000003860528 1. Terminals (+) Alternator harness connector F60 Terminal 4 (–) Ground Voltage (Approx.CHECK “S” TERMINAL CIRCUIT Check voltage between alternator harness connector and ground.) F G H Battery voltage Is the inspection result normal? YES >> Refer to CHG-2. Confirm repair by performing complete Starting/Charging system test. CHARGING SYSTEM INFOID:0000000003860529 JCMWM1691GB CHG-14 .CHARGING SYSTEM < COMPONENT DIAGNOSIS > CHARGING SYSTEM Wiring Diagram . CHARGING SYSTEM < COMPONENT DIAGNOSIS > A B C D E F G H I J K L CHG N O JCMWM1692GB P CHG-15 . CHARGING SYSTEM < COMPONENT DIAGNOSIS > JCMWM1693GB CHG-16 . Refer to CHG-2. "Work Flow". The charge warning lamp turns ON when increasing the engine speed.CHARGING SYSTEM < SYMPTOM DIAGNOSIS > SYMPTOM DIAGNOSIS CHARGING SYSTEM Symptom Table Symptom Discharged battery The charge warning lamp does not illuminate when the ignition switch is set to ON. The charge warning lamp does not turn OFF after the engine starts. Reference INFOID:0000000003860530 A B C D E F G H I J K L CHG N O P CHG-17 . all maintenance must be performed by an authorized NISSAN/INFINITI dealer. used along with a front seat belt. WARNING: • To avoid rendering the SRS inoperative. can lead to personal injury caused by unintentional activation of the system. helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. • Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. including incorrect removal and installation of the SRS. • Improper maintenance. CHG-18 .PRECAUTIONS < PRECAUTION > PRECAUTION PRECAUTIONS Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000003860531 The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”. see the “SRS AIRBAG”. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation. For removal of Spiral Cable and Air Bag Module. Information necessary to service the system safely is included in the “SRS AIRBAG” and “SEAT BELT” of this Service Manual. PREPARATION < PREPARATION > PREPARATION PREPARATION Special Service Tools Tool number Tool name KV10118200 (included in the adapter kit: Mot. 1732) Alternator pulley adapter Description Removing and installing alternator pulley INFOID:0000000003860532 A B C D E PKIA1241E F G H I J K L CHG N O P CHG-19 . Is the inspection result normal? YES >> GO TO 2.CHECK “E” TERMINAL CONNECTION Check if “E” terminal (alternator ground harness) is clean and tight. "Checking". CHG-20 . 36 4 Is the inspection result normal? YES >> GO TO 3. Refer to the following EM-12. NO >> Repair “E” terminal connection. 3. Is the inspection result normal? YES >> INSPECTION END NO >> Repair as needed. NO >> Repair battery terminals connection.CHECK BATTERY TERMINALS CONNECTION Check if battery terminals are clean and tight.CHECK FUSE Check for blown fuse. 2. 4. Unit Alternator Combination meter Power source (Power supply terminals) Battery (“S” terminal) Ignition switch ON (“L” terminal) Fuse No.CHARGING SYSTEM PRELIMINARY INSPECTION < ON-VEHICLE MAINTENANCE > ON-VEHICLE MAINTENANCE CHARGING SYSTEM PRELIMINARY INSPECTION Inspection Procedure INFOID:0000000003860533 1.CHECK DRIVE BELT TENSION Check drive belt tension. NO >> Be sure to eliminate the cause of malfunction before installing new fuse. Is the inspection result normal? YES >> GO TO 4. "Components" for symbols in the figure.ALTERNATOR < ON-VEHICLE REPAIR > ON-VEHICLE REPAIR ALTERNATOR Exploded View REMOVAL INFOID:0000000003860538 A B C D E F G H I J JPMIA1133GB 1. Alternator stay mounting bolt “B” terminal nut 3. L DISASSEMBLY CHG N O P CHG-21 . 7. 5. 6. Alternator mounting bolt Alternator mounting nut Alternator bracket 2. Alternator Alternator stay mounting bolt K Refer to GI-4. 4. 8. 4. Refer to EM-26. Remove idler pulley. Disconnect the oil pressure switch. Disconnect the alternator harness connectors. 11. Remove the alternator bolt and nuts. Retainer Through bolt Stator assembly 10. 5. 10. Rotor assembly Front bracket assembly Pulley nut 3. 6. "FENDER PROTECTOR : Exploded View". 8. Disconnect the negative battery terminal. CAUTION: CHG-22 . "Components" for symbols in the figure. Rear bearing Front bearing Pulley 2. Remove air cleaner and air duct assembly. Remove drive belt. 2. Refer to EM-25. 3. 9. 7. 4. Remove splash guard (RH) Refer to EXT-22. Terminal set 11. INFOID:0000000003860539 INSTALLATION Installation is in the reverse order of removal.ALTERNATOR < ON-VEHICLE REPAIR > Type: A003TJ1791 JPMIA0859GB 1. Refer to HA-36. Removal and Installation REMOVAL 1. "Removal and Installation". 6. Remove engine cover. 5. IC voltage regulator assembly 13. 9. "Removal and Installation". Diode assembly 12. Slide the alternator out and remove. Rear bracket assembly Refer to GI-4. Remove A/C compressor. 12. Remove front wheel and tire (RH). "Removal and Installation". 7. A B C JPMIA0831ZZ D • Be sure to tighten “B” terminal nut carefully. Set rotor to the vise. and then make sure that the system operates normally. Therefore. Refer to EM-12. Remove pulley cap. heat only the bearing box section until the temperature increases to approximately 30°C (86°F) with a soldering iron (200W capacity). • For this model. CAUTION: Never use a heat gun. the power generation voltage variable control system operation inspection should be performed after replacing the alternator. • Install alternator and check tension of belt. "Inspection Procedure". as if can damage diode assembly. 2. INFOID:0000000003860540 G H I J SEL032Z K Front Cover 1. the power generation voltage variable control system that controls the power generation voltage of the alternator has been adopted. using suitable tool. Refer to CHG-20. "Checking". E F Disassembly and Assembly DISASSEMBLY Rear bracket assembly NOTE: Rear bracket assembly may be hard to remove because a ring is used to lock outer race of rear bearing. And then tighten them in numerical order shown in the figure. L CHG N SKIB0531E O P CHG-23 . • Use copper plate or thick cloth for rotor in the vise.ALTERNATOR < ON-VEHICLE REPAIR > • Temporarily tighten all of alternator bolt and nuts. CAUTION: • Be careful not to damage the rotor. To facilitate removal of rear bracket assembly. Remove alternator pulley. INFOID:0000000003860541 CHG-24 . using alternator pulley adaptor (A) [SST:KV10118200]. NOTE: Take care not damage slip ring sliding surface. SKIB4530E Inspection ALTERNATOR PULLEY INSPECTION Perform the following. Push brushed up with fingers and install them to rotor. Replace with a new one. SKIB4529E 2. • Never lubricate rear bearing outer race. regulator assembly and stator. JSMIA0063ZZ ASSEMBLY Rear Bearing CAUTION: • Never reuse rear bearing. • Make sure that alternator pulley nut is tight. Rear bracket assembly Installation 1. Fit brush assembly. • Make sure that alternator pulley does not rattle.ALTERNATOR < ON-VEHICLE REPAIR > 3. diode assembly. 541.A] INFOID:0000000003860542 A B VQ25DE.5 V is applied) Hot output current (When 13.1) More than 22.1 . VQ35DE A003TJ1791 MITSUBISHI make 12 . 14.300 More than 61/1.8 .000 14.130 Negative Less than 1.2.19.5.SERVICE DATA AND SPECIFICATIONS (SDS) < SERVICE DATA AND SPECIFICATIONS (SDS) SERVICE DATA AND SPECIFICATIONS (SDS) SERVICE DATA AND SPECIFICATIONS (SDS) Alternator Applied model Type Nominal rating Ground polarity Minimum revolution under no-load (When 13.7 More than 5.5 V is applied) Regulated output voltage Minimum length of brush Brush spring pressure Slip ring minimum outer diameter Rotor (Field coil) resistance [rpm] [V .1 (0.7 .00 (0.2 C D E [A/rpm] [V] [mm (in)] [N (g. oz)] [mm (in)] [Ω] F G H I J K L CHG N O P CHG-25 .500 More than 109/2.1 .870) 1.197) 4.14.3 (418 .500 More than 129/5.