Charging System (Lf 2.0L): Other Mazda MX-5 NC рестайлинг

Electrolyte Specific Gravity

1. Measure the electrolyte specific gravity using a hydrometer. If it is less than the specification, recharge the battery. (See «BATTERY RECHARGING [LF]»(ref-430294-S38491935192011101700000) .) Battery electrolyte specific gravity [20°C {68°F}] 1.22-1.29

Battery Voltage

1. Inspect the battery as follows: BATTERY VOLTAGE SPECIFICATION Step Inspection Action 1 Measure the battery positive voltage. 12.4 V or more Go to Step 3. Less than 12.4 V Go to the next step. 2 Quick charge for 30 min and recheck voltage. 12.4 V or more Go to the next step. Less than 12.4 V Replace the battery. 3 Using the battery load tester, apply load current (see battery load test current) and record battery voltage after 15 s. Is voltage more than specification? Yes Normal No Replace the battery. Battery load test current 46B24L (36): 135 A Standard specification BATTERY VOLTAGE SPECIFICATION Battery temp. (°C {°F}) Minimum voltage (V) 4 {39} 9.3 10 {50} 9.4 16 {61} 9.5 21 {70} 9.6

Back-up Current

1. Verify that the ignition switch is off (key has been removed) and that all doors are closed.
2. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [LF]»(ref-430294-S35932810402011101700000) .)
3. Disconnect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [LF]»(ref-430294-S35932810402011101700000) .) CAUTION: Operating electrical toads white the back-up current is being measured can damage the tester. NOTE: if the battery is not left undisturbed for 30 min, the tester will indicate a high value (approx. 300 mA). If the key or any electrical accessory is operated within approx. 30 min after the tester is connected, the battery must be left undisturbed for approx. 30 min from that point. For vehicles with the immobilizer system, the system periodically shifts synchronization of the security light flashing. Therefore, 45 mA (0.1 s) current is supplied when the security fight is illuminated, and 25 mA (2 s) current is supplied when the security light is not illuminated. In addition, the measuring instrument, which shows the average value, indicates around 30 mA.
4. Connect the tester between the negative battery terminal and negative battery cable, leave the battery undisturbed for 30 min , and then measure the back-up current. If not within the specification, measure the back-up current while removing the fuses one by one from the inside of the main fuse block and the inside of the fuse block. Inspect and repair wiring harnesses and connectors of the fuse where the current has decreased. Battery back-up current (When the ignition switch is off, the ignition key is removed, and all doors are closed.) Vehicles with immobilizer system: 25-45 mA Vehicles without immobilizer system: 30 mA or less

BATTERY RECHARGING [LF]

Scheme 8

1. Remove the battery and then place it in a pan of water.
2. Remove the battery filler caps.
3. Connect a battery charger to the battery and adjust the charging current as follows. Battery slow charge current 46B24L (36): 3.5-4.5 A Battery quick charge current [30 min] 46B24L (36): 25 A
4. After the battery is recharged, verify that the voltage is within the specification and remains at the same value for 1 h or more after the recharging has been completed. If not within the specification, replace the battery. Standard voltage 12.4 V or more

Generator Warning Light

1. Verify that the battery is fully charged.
2. Verify that the drive belt is correct. (See «DRIVE BELT INSPECTION [LF]»(ref-430300-S33845253692011101700000) .)
3. With the ignition switch turned to the ON position, verify that the generator warning light illuminates. If it does not illuminate, inspect the generator warning light and the wiring harness. If the generator warning light and the wiring harness are normal, inspect the PCM.
4. Verify that the generator warning light goes out after the engine is started. If the generator warning light does not go out, perform the DTC inspection, then perform troubleshooting according to the corresponding diagnostic procedure. See «ON-BOARD DIAGNOSTIC TEST [LF]»(ref-478569-S14296697312012061100000) . See «DIAGNOSTIC MONITORING TEST RESULTS [LF]»(ref-478569-S05745214582012061100000)

Scheme 9

1. Verify that the battery is fully charged.
2. Verify that the drive belt is correct. (See «DRIVE BELT INSPECTION [LF]»(ref-430300-S33845253692011101700000) .)
3. Turn off all electrical loads.
4. Start the engine.
5. Verify that the generator rotates smoothly without any noise while the engine is running. If there is any noise, find the cause and repair or replace the generator.
6. Measure the voltage at each terminal using a tester. If it is not as specified, find the cause and repair or replace the applicable part. Generator standard voltage [IG-ON] Terminal B: B+ Terminal P: Approx. 1 V or less Terminal D: Approx. 0 V Generator standard voltage [Idle, 20°C {68°F}] Terminal B: 13-15 V Terminal P: Approx. 3-8 V Terminal D: Turn the electrical loads (headlights, blower motor, rear window defroster, brake lights, etc.) on and verify that the voltage reading increases.

Current

Note. Since the charging current decreases rapidly after starting the engine, carry out the following procedure quickly, and read the maximum current value.

1. Verify that the battery is fully charged.
2. Verify that the drive belt is correct. (See «DRIVE BELT INSPECTION [LF]»(ref-430300-S33845253692011101700000) .)
3. Remove the battery cover. (See «BATTERY REMOVAL/INSTALLATION [LF]»(ref-430294-S35932810402011101700000) .)
4. Disconnect the negative battery cable.
5. Connect a tester, which can read 120 A or more, between generator terminal B and the wiring harness.
6. Connect the negative battery cable. (See «BATTERY REMOVAL/INSTALLATION [LF]»(ref-430294-S35932810402011101700000) .)
7. Turn off all electrical loads.
8. Start the engine.
9. Increase engine speed to 2, 500 RPM. NOTE: When the electrical load on the vehicle is low, the specified current cannot be verified although the generator is normal. In this case, increase the electrical load (Leave the headlights turned on for a while, then discharge the battery, or use a similar method.) and recheck. When the generator itself or the ambient temperature are too high, the specified current also cannot be verified. In this case, cool down the generator and recheck.
10. Turn the electrical loads (headlights, blower motor, rear window defroster, brake lights, etc.) on and verify that the current reading increases more than the minimum value indicated below. If it is not as specified, go to the PCM and generator shearing inspection. (See «PCM AND GENERATOR SHEARING INSPECTION»(ref-430294-S26766022112011101700000) .) Generator generated current minimum value 70 % of the nominal output current (nominal output current: 100 A) [Ambient temp. 20°C {68°F}, voltage 13.0-15.0 V, both engine and generator are hot]

Scheme 10

1. Connect the M-MDS to the DLC-2.
2. Inspect as follows

INSPECTION CHART Step Inspection Action 1 Measure the generator terminal B voltage when the electrical loads (1) are on and off. 15 V or more Go to Step 2. 13-15 V Normal (2) 13 V or less Go to Step 3. 2 Monitor the ALTT V PID using the MMDS, See ON-BOARD DIAGNOSTIC TEST [LF] . or measure the PCM 2AJ terminal waveform using an oscilloscope. See PCM INSPECTION [LF] Is the value normal? Yes Go to Step 4. No Inspect followings, then repair or replace as necessary. If there is no malfunction, replace the PCM. Wiring harness between PCM terminal 2AJ-generator terminal P. Wiring harness between PCM terminal 2AI-generator terminal D. Generator inner parts. 3 Monitor the ALTT V PID using the M-MDS, See DIAGNOSTIC MONITORING TEST RESULTS [LF] or measure the PCM 2AJ terminal waveform using an oscilloscope. See PCM INSPECTION [LF] . Is the value normal? Yes Go to Step 5. No Inspect followings, then repair or replace as necessary. If there is no malfunction, replace the PCM. Wiring harness between PCM terminal 2AJ-generator terminal P. Wiring harness between PCM terminal 2AI-generator terminal D. Generator inner parts. 4 Monitor the ALTF PID using the M-MDS, or calculate the duty value of the PCM terminal 2AI using an oscilloscope. Is the duty value 100%? Yes Replace PCM. No Inspect followings, then repair or replace as necessary. If there is no malfunction, replace the PCM. Wiring harness between PCM terminal 2AI-generator terminal D. Generator inner parts. 5 Monitor the ALTF PID using the M-MDS, or calculate the duty value of the PCM terminal 2AI using an oscilloscope. Is the duty value 0%? Yes Replace PCM. No Inspect followings, then repair or replace as necessary. If there is no malfunction, replace the PCM. Wiring harness between PCM terminal 2AI-generator terminal D. Generator inner parts. (1) Headlights, blower motor, rear window defroster, brake lights, etc. (2) If the generator field coil duty value does not change when electrical loads (such as headlights, blower motor, rear window defroster, brake lights) are on or off, inspection with discharged battery is needed

Scheme 11

Scheme 12

Scheme 13

Scheme 14

1. Measure the resistance between the slip rings using a tester. If not within the specification, replace the rotor. Generator rotor resistance (between slip rings) [20°C {68°F}] 1.9-2.2 ohm
2. Verify that there is no continuity between the slip ring and core using a tester. If there is continuity, replace the rotor.
3. Inspect the slip ring surface condition. If the slip ring surface is rough, use a lathe or fine sandpaper to smooth it.

Scheme 15

Scheme 16

Scheme 17

1. Verify that the continuity is as indicated in illustration. If there is any malfunction, replace the stator.
2. Verify that there is no continuity between the stator coil leads and core using a tester. If there is continuity, replace the stator coil.

Scheme 18

1. Inspect brushes for wear. If any brush is worn almost to or beyond the limit, replace all of the brushes. Generator brush length Standard: 22.5 mm {0.89 in} Minimum: 5.0 mm {0.20 in}

Scheme 19

1. Measure the force of the brush spring using a spring pressure gauge.
2. Read the spring pressure gauge at the brush tip projection of 2 mm {0.08 in}. Replace the brush spring if necessary. Generator brush spring force Standard: 4.1-5.3 N {0.42-0.54 kgf, 0.92-1.19 lbf} Minimum: 1.7 N {0.17 kgf, 0.38 lbf}

Rectifier (Using an analog circuit tester)

Scheme 20

1. Inspect for continuity of the diodes using an analog circuit tester. If not as specified, replace the rectifier. Specification CONTINUITY SPECIFICATION Negative Positive Continuity E P1, P2, P3, P4, P5, P6 Yes B No P1, P2, P3, P4, P5, P6 E No B Yes

Rectifier (Using a digital circuit tester)

1. Inspect for continuity of the diodes using a digital circuit tester. If not as specified, replace the rectifier. Specification CONTINUITY SPECIFICATION Negative Positive Continuity E P1, P2, P3, P4, P5, P6 No B Yes P1, P2, P3, P4, P5, P6 E Yes B No

Scheme 21

1. Inspect for abnormal noise, looseness, and sticking. Replace the bearing if necessary.