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nippon denso alternator repair

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Ford Windstar 3.8L The battery light is on but the alternator is charging Service Manual

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Procedures 1. Disconnect the alternator and the Powertrain Control Module (PCM). Check the Violet (VT) (GENerator MONitor or GENMON) wire from the alternator to pin 20 of the PCM connector and the Red/Pink (RD/PK) (GENerator COMmand or GENCOM) wire from the alternator to pin 45 of the PCM for high resistance, an open, or a short to ground. Repair the wiring as needed. 2. If the wiring checks OK, reconnect the PCM and alternator. Start the engine and monitor the VT wire for a roughly 0-10v square wave signal. The signal will be around 40-50% normally with no loads on the system and minimal charging system output. As the load increases, the duty cycle should increase (NOTE: the duty cycle is a positive duty cycle so as the duty cycle increases, the voltage high time increases). 3. If there is no signal on the wire, disconnect the alternator and with key on check the VT wire for roughly 9-10v from the PCM. If OK, jump the Orange/Light Blue (OG/LB) wire to battery voltage and recheck operation with everything connected. This wire should be battery voltage at all time. If the OG/LB wire has battery voltage, the VT wire shows voltage from the PCM but there is no signal on it with the alternator charging, suspect a faulty, defective or incorrect alternator

2006 Dodge Truck RAM 2500 DENSO A/C COMPRESSOR Service and Repair Manual

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DENSO A/C COMPRESSOR REMOVAL NOTE: * The compressor clutch assembly can be serviced with the refrigerant system fully-charged. * Typical A/C compressor shown in illustrations. 1. Disconnect and isolate the negative battery cable. 2. Remove the accessory drive belt. 3. Disconnect the engine wire harness from the compressor clutch field coil connector (1) located on the top of the A/C compressor (5) . Remove the bolts that secure the A/C compressor to the engine and support the A/C compressor. 5. Carefully remove the compressor clutch field coil connector and wire lead from the connector bracket (2). 6. Remove the compressor shaft bolt (3). A band-type oil filter wrench or a strap wrench may be used to hold the clutch plate (4) from rotating during bolt removal. CAUTION: Do not pry between the clutch plate and the pulley and bearing assembly to remove the clutch plate from the compressor shaft as this may damage the clutch plate. NOTE: Use care not to lose any clutch shim(s) during removal of the clutch plate, as they may be reused during the clutch plate installation process. 7. Tap the clutch plate (2) lightly with a plastic mallet to release it from the splines on the compressor shaft (1) and remove the clutch plate and shim(s) (3). 8. Using snap ring pliers (2), remove the snap ring (1) that secures the pulley and bearing assembly (3) to the front of the A/C compressor and remove the pulley and bearing assembly. 9. Using snap ring pliers (Special Tool C-4574 or equivalent) (1), remove the snap ring (4) that secures the compressor clutch field coil (2) to the front of the A/C compressor (3) and remove the field coil. INSTALLATION NOTE: Typical A/C compressor shown in illustrations. 1. Align the dowel pin on the back of the compressor clutch field coil (2) with the hole in the front of the A/C compressor (3) and position the field coil onto the compressor. Be certain that the compressor clutch field coil wire lead is properly routed so that it is not pinched between the A/C compressor and the field coil. CAUTION: The snap ring must be fully and properly seated in the groove or it will vibrate out, resulting in a clutch failure and severe damage to the A/C compressor. NOTE: A new snap ring must be used to secure the compressor clutch field coil to the A/C compressor. The bevel side of the snap ring must face outward and both snap ring eyelets must be oriented to the right or to the left of the field coil dowel pin location on the A/C compressor. 2. Using snap ring pliers (Special Tool C-4574 or equivalent) (1), install the snap ring (4) that secures the compressor clutch field coil to the front of the A/C compressor. Be certain that the snap ring is fully and properly seated in the groove and oriented correctly. CAUTION: * Be certain to position the compressor clutch field coil wire lead so that

2002 Land Rover Freelander (LN) Camshaft Timing Belt Service Repair

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Service Repair No – 12.65.18 Remove 1. Disconnect battery earth lead. 2. Remove ancillary drive belt . 3. Remove RH front road wheel. 4. Remove 3 bolts securing RH splash shield to body and remove shield. 5. Remove 3 bolts securing camshaft timing belt LH rear cover and remove cover. 6. Rotate crankshaft in a clockwise direction and align the engine “SAFE” position, notch on crankshaft pulley aligned to the “ARROW” on front mounting plate and the timing marks aligned on the rear camshaft gears as illustrated 7. Remove bolt securing PAS pipe to engine front mounting plate. 8. Remove 3 Torx screws securing PAS pump pulley and remove pulley. Zoom Sized for Print Zoom Sized for Print Zoom Sized for Print 9. Remove 3 bolts securing PAS pump to front mounting plate and tie pump aside. 10. Release alternator battery lead terminal cover, loosen terminal nut and disconnect lead from terminal. 11. Disconnect multiplug from alternator. 12. Remove lower bolt and upper nut and bolt securing alternator to front mounting plate. 13. Remove alternator. 14. Remove Torx screw securing idler pulley to front mounting plate and remove pulley 15. Loosen bolt securing lower engine steady to front subframe. 16. Remove bolt securing lower engine steady to sump mounting, release lower engine steady from sump mounting. 17. Remove 3 bolts securing camshaft timing belt RH front cover and remove cover 18. Remove 3 bolts securing camshaft timing belt LH front cover and remove cover. 19. Assemble LRT-12-161 to LRT-12-199 and secure with clamp bolt. 20. Insert LRT-12-161 with LRT-12-199 into crankshaft pulley, loosen and remove pulley bolt. 21. Remove special tool from crankshaft pulley and remove crankshaft pulley. 22. Remove 3 bolts securing camshaft timing belt lower cover to cylinder block and remove cover. 23. Remove 2 bolts securing ancillary drive belt tensioner and remove tensioner. 24. Note fitted position of heat shield on A/C compressor and remove 3 bolts securing A/C compressor to front mounting plate and cylinder block. Release A/C compressor and heat shield and position aside. 25. Drain engine oil.

1989 Toyota 4Runner ALTERNATOR AND REGULATOR – NIPPONDENSO

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ON-VEHICLE TESTING NO LOAD TEST 1) Disconnect alternator terminal “B” wire. Using an ammeter and voltmeter, connect negative ammeter lead to disconnected alternator terminal “B” wire and positive lead to alternator terminal “B”. Connect voltmeter positive lead to alternator terminal “B” and negative lead to ground. See Fig. 1. Fig. 1: Charging Circuit Testing Courtesy of Toyota Motor Sales, U.S.A., Inc. 2) Start engine and increase engine speed to 2000 RPM. Voltmeter and ammeter should read according to specification. See ALTERNATOR OUTPUT SPECIFICATIONS table. 3) If voltage is more than specified, replace IC regulator. If voltage is less than specified, ground “F” (full field) terminal. See Fig. 2, 3 or 4. 4) If voltage now climbs above specified range, replace IC regulator. If voltage remains below specified range, repair or replace alternator. ALTERNATOR OUTPUT SPECIFICATIONS @ 2000 RPM pplication Amps (1) Volts Cressida …………………. 10 ………………… 14.0-15.0 Land Cruiser ……………… 10 ………………… 13.8-14.4 All Others ……………….. 10 ………………… 13.9-15.1 (1) – With temperature at 77F (25C). Fig. 2: Alt Full Field Output Test (Camry, Celica, Corolla 4A-GE, Cressida, MR2, Supra) Courtesy of Toyota Motor Sales, U.S.A., Inc. Fig. 3: Alt Full Field Output Test (Corolla 4A-F 4A-FE, Land Cruiser, Pickup, 4Runner)

1999-2003 Ford Windstar 3.8L The battery light is on, but the alternator is charging

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1. Disconnect the alternator and the Powertrain Control Module (PCM). Check the Violet (VT) (GENerator MONitor or GENMON) wire from the alternator to pin 20 of the PCM connector and the Red/Pink (RD/PK) (GENerator COMmand or GENCOM) wire from the alternator to pin 45 of the PCM for high resistance, an open, or a short to ground. Repair the wiring as needed. 2. If the wiring checks OK, reconnect the PCM and alternator. Start the engine and monitor the VT wire for a roughly 0-10v square wave signal. The signal will be around 40-50% normally with no loads on the system and minimal charging system output. As the load increases, the duty cycle should increase (NOTE: the duty cycle is a positive duty cycle so as the duty cycle increases, the voltage high time increases). 3. If there is no signal on the wire, disconnect the alternator and with key on check the VT wire for roughly 9-10v from the PCM. If OK, jump the Orange/Light Blue (OG/LB) wire to battery voltage and recheck operation with everything connected. This wire should be battery voltage at all time. If the OG/LB wire has battery voltage, the VT wire shows voltage from the PCM but there is no signal on it with the alternator charging, suspect a faulty, defective or incorrect alternator.