Charging System - Lancer Evolution: Component Locations Mitsubishi Lancer X

SPECIAL TOOL

SPECIAL TOOL TOOL TOOL NUMBER AND NAME SUPERSESSION APPLICATION MB991958 Scan tool (M.U.T.-III sub assembly) MB991824 Vehicle communication interface (V.C.I.) MB991827 M.U.T.-III USB cable MB991910 M.U.T.-III main harness A (Vehicles with CAN communication system) MB991911 M.U.T.-III main harness B (Vehicles without CAN communication system) MB991914 M.U.T.-III main harness C (for Daimler Chrysler models only) MB991825 M.U.T.-III measurement adapter MB991826 M.U.T.-III trigger harness MB991824-KIT NOTE: G: MB991826 M.U.T.-III Trigger Harness is not necessary when pushing V.C.I. ENTER key. Checking of engine speed CAUTION: For vehicles with CAN communication, use M.U.T.-III main harness A to send simulated vehicle speed. If you connect M.U.T.-III main harness B instead, the CAN communication does not function correctly. MB991519 Generator harness connector MIT530 Micrd 530 charging system tester. Checking of generator ("S" terminal voltage) MB992226 Serration socket - Removal and installation of alternator's one way clutch

Scheme 24

Scheme 25

Scheme 26

Required Special Tool

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

1. MB991824: V.C.I.
2. MB991827: M.U.T.-III USB Cable
3. MB991910: M.U.T.-III Main Harness A

This test determines whether the wiring from the generator "B" terminal to the positive battery terminal (including the fusible link) is in good condition or not

1. Always be sure to check the following before the test. Generator installation Generator drive belt tension (Refer to «DRIVE BELTS (FOR GENERATOR, AND AIR CONDITIONING) (CHECK)»(ref-289379-S31530089682008063000000) .) Fusible link Abnormal noise from the generator while the engine is running.
2. Turn the ignition switch to the "LOCK" (OFF) position.
3. Disconnect the negative battery cable.
4. Set a clamp-type DC test ammeter to the generator "B" terminal output wire. NOTE: Disconnecting the generator output wire and connecting the ammeter may not thoroughly diagnosis an output current drop problem because of an insufficient connection between terminal "B" and the output wire.
5. Connect a digital-type voltmeter between the generator "B" terminal and the positive battery terminal. (Connect the positive lead of the voltmeter to the "B" terminal, and then connect the negative lead of the voltmeter to the positive battery cable.)
6. Reconnect the negative battery cable.
7. Connect an engine tachometer or scan tool MB991958.
8. Leave the hood open.
9. Start the engine.
10. With the engine running at 2,500 r/min, turn the headlamps and other lamps on and off to adjust the generator load so that the value displayed on the ammeter is slightly above 30 A. Adjust the engine speed by gradually decreasing it until the value displayed on the ammeter is 30 A. Take a reading of the valve displayed on the voltmeter at this time. Limit: maximum 0.3 V NOTE: When the generator output is high and the value displayed on the ammeter does not decrease until 30 A, set the value to 40 A. Read the value displayed on the voltmeter at this time. When the value range is 40 A, the limit is maximum 0.4 V.
11. If the value displayed on the voltmeter is above the limit value, there is probably a malfunction in the generator output wire. Check the wiring between the generator "B" terminal and the positive battery terminal (including fusible link). If a terminal is not sufficiently tight or if the harness has become discolored due to overheating, repair and then test again.
12. After the test, run the engine at idle.
13. Turn off all lights and turn the ignition switch to the "LOCK" (OFF) position. NOTE: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" position.
14. Disconnect the engine tachometer or scan tool MB991958.
15. Disconnect the negative battery cable.
16. Remove the ammeter and voltmeter.
17. Connect the negative battery cable.

Scheme 27

Required Special Tool

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

1. MB991824: V.C.I.
2. MB991827: M.U.T.-III USB Cable
3. MB991910: M.U.T.-III Main Harness A

This test determines whether the generator outputs normal current. For best results, use a charging system tester. If not available, follow the steps below.

1. Before the test, always be sure to check the following. Generator installation Battery (Refer to «BATTERY TEST»(ref-289392-S10169341972008063000000) .) NOTE: The battery to be used should be slightly discharged. The load in a fully-charged battery will be insufficient and the test may not be able to be carried out correctly. Generator drive belt tension (Refer to «DRIVE BELTS (FOR GENERATOR, POWER STEERING PUMP AND AIR CONDITIONING) (CHECK)»(ref-289379-S31530089682008063000000) .) Fusible link Abnormal noise from the generator while the engine is running.
2. Turn the ignition switch to the "LOCK" (OFF) position.
3. Disconnect the negative battery cable.
4. Set a clamp-type DC test ammeter to the generator "B" terminal output wire. NOTE: Disconnecting the generator output wire and connecting the ammeter may not thoroughly diagnosis an output current drop problem because of an insufficient connection between terminal "B" and the output wire.
5. Connect a voltmeter with a range of 0 - 20 V between the generator "B" terminal and ground. (Connect the positive lead of the voltmeter to the "B" terminal, and then connect the negative lead of the voltmeter to ground.)
6. Connect the negative battery cable.
7. Connect an engine tachometer or scan tool MB991958.
8. Leave the hood open.
9. Check to be sure that the reading on the voltmeter is equal to the battery positive voltage. NOTE: If the voltage is 0 V, the cause is probably an open circuit in the wire or fusible link between the generator "B" terminal and the battery positive terminal or malfunctioning voltmeter.
10. After turning on the headlights, start the engine. NOTE: Because the current from the battery will soon drop after the engine is started, step 11 should be carried out as quickly as possible in order to obtain the maximum current output value.
11. Immediately after setting the headlights to high beam, turning on the air conditioner switch and turning the heater blower switch to the highest position, increase the engine speed to 2,500 r/min and read the maximum current output value displayed on the ammeter. Limit value: 70 % of nominal current output NOTE: For the nominal current output, refer to the «SERVICE SPECIFICATIONS»(ref-289402-S28845054782008063000000) . NOTE: The current output value will depend on the electrical load and the temperature of the generator body. NOTE: If the electrical load is small while testing, the specified level of current may not be output even though the generator is normal. In such cases, increase the electrical load by leaving the headlights turned on for some time to discharge the battery or by using the lighting system in another vehicle, and then test again. NOTE: The specified level of current also may not be output if the temperature of the generator body or the ambient temperature is too high. In such cases, cool the generator and then test again.
12. The reading on the ammeter should be above the limit value. If the reading is below the limit value and the generator output wire is normal, remove the generator from the engine and check the generator.
13. Run the engine at idle speed after the test.
14. Turn the ignition switch to the "LOCK" (OFF) position.
15. Disconnect the engine tachometer or scan tool MB991958.
16. Disconnect the negative battery cable.
17. Disconnect the ammeter and voltmeter.
18. Connect the negative battery cable.

Scheme 28

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: V.C.I. MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A
2. MB991519: Generator Harness Connector

This test determines whether the voltage regulator is correctly controlling the generator output voltage.

1. Always be sure to check the following before the test: Generator installation Check to be sure that the battery installed in the vehicle is fully charged. (Refer to «BATTERY TEST»(ref-289392-S10169341972008063000000) .) Generator drive belt tension (Refer to «DRIVE BELTS (FOR GENERATOR, AND AIR CONDITIONING) (CHECK)»(ref-289379-S31530089682008063000000) .) Fusible link Abnormal noise from the generator while the engine is running.
2. Turn the ignition switch to the "LOCK" (OFF) position.
3. Disconnect the negative battery cable.
4. Use the special tool (Generator harness connector: MB991519) to connect a digital-type voltmeter between the generator "S" terminal and ground. (Connect the positive lead of the voltmeter to the "S" terminal, and then connect the negative lead of the voltmeter to a secure ground or to the negative battery terminal.)
5. Set a clamp-type DC test ammeter to the generator "B" terminal output wire.
6. Reconnect the negative battery cable.
7. Connect an engine tachometer, or scan tool MB991958.
8. Turn the ignition switch to the "ON" position and check that the reading on the voltmeter is equal to the battery positive voltage. NOTE: If the voltage is 0 V, the cause is probably an open circuit in the wire or fusible link between the generator "S" terminal and the battery positive terminal or malfunctioning voltmeter.
9. Check to be sure that all lights and accessories are off.
10. Start the engine.
11. Increase the engine speed to 2,500 r/min.
12. Read the value displayed on the voltmeter when the current output by the generator becomes 15 A or less.
13. If the voltage reading conforms to the value in the voltage regulation table, then the voltage regulator is operating normally. If the voltage is outside the standard value, there is a malfunction of the voltage regulator or the generator (Refer to the «VOLTAGE REGULATION TABLE»(ref-289402-S36278552562008063000000) ). NOTE: When the voltage is approximately 12.8 V, the G-terminal is supposed to have a short circuit to the earth. Check the circuits relating to the G-terminal on the generator.
14. After the test, lower the engine speed to idle.
15. Turn the ignition switch to the "LOCK" (OFF) position.
16. Disconnect the engine tachometer or scan tool MB991958.
17. Disconnect the negative battery cable.
18. Disconnect the ammeter and voltmeter.
19. Remove the special tool (Generator harness connector: MB991519), and return the connector to the original condition.
20. Connect the negative battery cable.