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Lancer 93 Engine Electrical

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823 views50 pages

Lancer 93 Engine Electrical

Uploaded by

Ilham Saputra
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© © All Rights Reserved
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16-1 ENGINE ELECTRICAL CONTENTS rena. CHARGING SYSTEM 2 SERVICE ADJUSTMENT PROCEDURES .... 16 Ignition Timing Adjustment . Refer to GROUP 11 eee ; % Top Dead Centre Sensor ... Referto GROUP 13 See eee ree ee Crank Angle Sensor ......, Referto GROUP 13 Service Specifications 2 DISTRI = ‘SPECIAL TOOL . 2 ener ay IK AN 2... eee SERVICE ADJUSTMENT PROCEDURES ... 3 CRANK ANGLE SENSOR ” = DET ISOR <4G93> ........... ALTERNATOR <4G13> 9 fONATION SEN: <4G93> 32 Ww ALTERNATOR <4G92, 4G93> «2.2.22... ft ence SPECIFICATIONS ... ALTERNATOR <4D68> .......0....0c0s 00s 12-1 Service Specifications . aoe 33 STARTING SYSTEM Sealant te veers 33 SPECIFICATIONS . SERVICE ADJUSTMENT PROCEDURES .... 34 General Specifications . ae 13 Low plus .. STARTER .. 4 IGNITION SYSTEM ... SPECIFICATIONS . 15 General Specifications . : 16 Service Specifications ..... cena) SPECIAL TOOL 0.2.02... 0secseeeeeeeseeee 16 |© WRsubishi Motors Corporation Dec. 193 Pwmest7.0 revise 16-2 CHARGING SYSTEM — Specifications/Special Tool CHARGING SYSTEM SPECIFICATIONS GENERAL SPECIFICATIONS er6Ba ALTERNATOR tems 4613 4692, 4693 4068 Type Battery voltage Battery voltage Battery voltage sensing sensing sensing Rated output VIA | 12165, 70", 75°? 12/75, 90** 12/78, 90**, 106"* Voltage regulator Electronic builtin type | Electronic builtin type | Electronic builtin type NOTE 1 “2: Vehicies with cold region specifications Vehicles with standard specifications buitt from October, 1993 *3:. Vehicles with automatic transmission for cold regions bulit from October, 1993, "4: Vehicles with EGR for cold regions built up to September, 1993 “5: Vehicles with cold region specifications built from October, 1993 SERVICE SPECIFICATIONS ereB2- items Specifications Alternator Standard velue Regulated voltage Ambient temp. at voltage regulator v =20°C (-4°F} 142-154 20°C (68°F) 139-149 60°C (140°F) 194-166 80°C {176°F) 181-148 Limit Output current 70 % of nominal output current SPECIAL TOOL Tool Number Neme Use Mmpg9e467 Alternator hamess ‘connector Checking the altermator terminal voltage) © IMisubishi Motors Corporation Dec. 1880 Punest7.0 revise CHARGING SYSTEM - Service Adjustment Procedures 16-3 SERVICE ADJUSTMENT PROCEDURES This test determines whether the wiring from the al- temator “B” terminal to the battery (+) terminal (in- ‘cluding the fusible link) is in a good condition or not. (1) Always be sure to check the following before the test © Alternator installation © Alternator drive belt tension (Referto GROUP, 11 - Service Adjustment Procedures.) © Fusible link © Abnormal noise from the alternator while the engine is running ‘Turn the ignition switch to the OFF position, Disconnect the negative battery cable. Disconnect the alternator output wire from the al- ternator “8” terminal and connect a DC test am- meter witha range of 0~ 100 Ain series between the "B” terminal and the disconnected output wire. (Connect the (+) lead of the ammeter to the “B" terminal, and then connect the (-) lead of the ammeter to the disconnected output wire.) (2 cc) (4) 6 ) eecte NOTE ‘Aclamp-type ammeter which enables measure- ments to be taken without disconnecting the al ternator output wire should be recommended. Because, if a vehicle in which the voltage may have dropped due to an imperfect connection at the alternator "B” terminal is being inspected, and so if the alternator "B" terminal is loosened anda test ammeter is connected, the connection will be complete at the time of connection and the possibility of finding problems will be re- duced. Connect a digital-type voltmeter between the al- ternator "B” terminal and the battery (+) termi- nal. (Connect the (+) lead of the voltmeter to the “B” terminal, and then connect the + lead of the voltmeter to the battery (+) cable.) VOLTAGE DROP TEST OF ALTERNATOR OUTPUT LINE Terminal 8 se1008 (© Mitsubichi Motors Corporation Den. 1803 pwmest17.0 Revise 16-4 CHARGING SYSTEM - Service Adjustment Procedures (6) Connect a tachometer. (For the procedure for connecting the tachometer, refer to GROUP 11 - Service Adjustment Procedures.) {7) Reconnect the negative battery cable. {8} Leave the hood open. (9) Start the engine (10)With the engine running at 2500 r/min., turn the headlamps and other lemps on and off to adjust the alternator 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 value displayed on the voltmeter at this time. Limit value: max. 0.3 V NOTE When the alternator output is high and the value displayed on the ammeter does not decrease un- til 30A, set the value to 40A. Read the value dis- OUTPUT CURRENT TEST Ignition Charging indicator O—1O--4 eet eaten ecto played on the voltmeter at this time. In this case the limit value becomes max. 0.4V. (11)If the value displayed on the voltmeter is above the limit value, there is probably a malfunction in the alternator output wire, so check the wiring between the alternator "B” terminal and the bat- tery (+) terminal (including fusible link). IF terminal is not sufficiently tight or ifthe har- ness has become discolored due to overheating, repair and then test again. (12)After the test, run the engine at idle. (13)Tum off all larnps and turn the ignition switch to the OFF position. (14)Disconnect the negative battery cable, (18)Disconnect the ammeter, voltmeter and tachom- eter. (16)Connect the alternator output wire to the alterna tor "B” terminal. (17)Connect the negative battery cable. Load Volimeter Ammeter (© Mitsubishi Motors Corporation Dec. 1859 wate9r17-D Revise CHARGING SYSTEM This test determines whether the alternator outputs normal current (1) Before the test, always be sure to check the fol- lowing. © Alternator installation © Battery (Refer to GROUP 54 - Battery.) NOTE The battery to be used should be slightly dis- charged. The load in a fully-charged battery will be insufficient and the test may not be able to be ‘carried out correctly © Alternatordrive belt tension (Refer to GROUP 11 = Service Adjustment Procedures.) dures.) © Fusible link '® Abnormal noise from the alternator while the engine is running. (2) Turn the ignition switch to the OFF position. (3) Disconnect the negative battery cable. (4) Disconnect the alternator output wire from the al- ternator "B” terminal and connect a DC test am- meter with a range of 0- 100 Ain series between the “B” terminal and the disconnected output wire. (Connect the (+} lead of the ammeter to the “B" terminal, and then connect the (-} lead of the ammeter to the disconnected output wire.) Caution Never use clips but tighten bolts and nuts to connect the line. Otherwise loose connec- tions (e.g. using clips) will lead to a serious ac- cident because of high current. NOTE A.clamp-type ammeter which enables measure- ‘ments to be taken without disconnecting the al- ternator output wire should be recommended. (8) Connect a voltmeter with a range of 0-20 V be- tween the alternator "8" terminal and the earth. (Connect the (+) lead of the voltmeter to the “B" terminal, and then connect the (-1lead of the volt- meter to the earth.) (6) Connect a tachometer. (For the procedure for connecting the tachometer, refer to GROUP 11 ~ Service Adjustment Procedures.) (2) Connect the negative battery cable. (8) Leave the hood open. (9) Check to be sure that the reading on the voltme- ter is equal to the battery voltage. NOTE If the voltage is 0, the cause is probably an open (© Nixsablsh! Motors Corporation Dee. 1998 Service Adjustment Procedures Punacstt70 16-5 circuit in the wire or fusible link between the al- ‘temator "B” terminal and the battery (+) termi- nal. (10)After turning the light switch on and turning on the headlamps, start the engine. (11)immedietely after setting the headlamps to high beam and turning the heater blower switch to the high revolution position, increase the engine speed to 2,500 r/min. and read the maximum cur- rent output value displayed on the ammeter. Limit value: 70% of normal current output NOTE © For the nominal current output, refer to the Alternator Specifications. © Because the current from the battery will soon drop after the engine is started, the above step should be carried out as quickly as possible in order to obtain the maximum cur- rent output value. © The current output value will depend on the electrical load and the temperature of the al- ternator body. © iF the electrical loadis small while testing, the specified level of current may not be output ‘even though the alternator is normal. In such cases, increase the electrical load by leaving the headiamps tumed on for some time to discharge the battery or by using the lighting system in another vehicle, and then test again, © The specified level of current also may not be output if the temperature of the alternator body or the ambient temperature is too high. In such cases, cool the alternator 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 alternator output wire is normal, remove the alternator from the engine and check the al- ternator. (13)Run the engine at idle speed after the test. (14)Tur the ignition switch to the OFF position. (18)Disconnect the negative battery cable. (16)Disconnect the ammeter, voitmeter and tachom- eter. (17\Connect the alternator output wire to the alterna- tor “B” terminal (18)Connect the negative battery cable. 16-6 REGULATED VOLTAGE TEST Ignition Switch G1) Battery Voltmeter og98467 CHARGING SYSTEM - Service Adjustment Procedures Loas ‘Ammoter coos ‘This tast determines whether the voltage regulator is correctly controlling the alternator output voltage. (1) Always be sure to check the following before the test. ‘Alternator installation Check to be sure that the battery installed in the vehicle is fully charged. (Refer to GROUP 54— Battery.) ¢ Alternator drive belt tension (Refer to GROUP 11 ~ Service Adjustment Procedures.) Fusible link © Abnormal noise from the alternator while the engine is running (2) Tum the ignition switch to the OFF position. 3) Disconnect the negative battery cable. () Connect digital-type voltmeter between the alter- nator "S" terminal and the earth. (Connect the (+) lead of the voltmeter to the “S” terminal, and then connect the (+) lead of the voltmeter to a secure earth or to the battery (-} terminal.) © Mitubishi Motors Corporation Dee. 1892 Pwwmestt7.0 {5) Disconnect the altemator output wire from the al- ternator “B” terminal. (6) Connecta DC test ammeter with a renge of O- 100 Ain series between the “B” terminal and the dis- connected output wire. (Connect the (+) lead of the ammeter to the "B” terminal, and then connect the (lead of the ammeter to the disconnected output wire.) Connect a tachometer. (Refer to GROUP 11 - Ser- viee Adjustment Procedures.) (8) Reconnect the negative battery cable. {9) Tum the ignition switch to the ON position and ‘check that the reading on the voltmeter is equal to the battery voltage, NOTE If the voltage is 0 V, the cause is probably an open Circuit in the wire or fusible link between the alter- nator “S” terminal and the battery (+) terminal. (10}Check to be sure that all lamps and accessories are off. a revise CHARGING SYSTEM - Service Adjustment Procedures (11)Start the engine. (12)increase the engine speed to 2,500 r/min. (13)Read the value displayed on the voltmeter when ‘the current output by the alternator becomes 10 A or less. (14)If the voltage reading conforms to the value in the voitage regulation table, then the voltage regulator is operating normally. If the voltage is outside the standard value, there is amaifunction of the voltage regulator or of thealter- nator, Voltage Regulation Table Inspection] Voltage regulator Standard ‘terminal ambient temperature | value V °C (°F) Terminal “S” | -20 (-4) 142-154 20 (68) 13.9-14.9 60 (140) 184-146 80 (176) 13.1-145, (18}After the test, lower the engine speed to the idle speed, (16)Tur the ignition switch to the “OFF” position. (17)Disconnect the negative battery cable. (18}Disconnect the ammeter, voltmeter and tachome- ter. (19)Connect the alternator output wire to the alternator “B" terminal (20)Connect the negative battery cable. © Mitsubishi Motors Corporation Dec. 1882 Pumesty7 0 16-6-2 NOTES (© Witsubled! Motors Corporation Des, 1985 enest17.0 CHARGING SYSTEM - Service Adjustment Procedures 16-7 Special CHECKING WITH AN ANALYZER Anayzer PENS Alternator MEASUREMENT METHOD. Connect the analyzer special patterns pick-up to the alternator B terminal. Btelminal reo STANDARD WAVEFORM ‘Observation Conditions FUNCTION ‘SPECIAL PATTERNS PATTERN HEIGHT VARIABLE VARIABLE knob Adjust while viewing the 02 04 wave pattem PATTERN SELECTOR RASTER Engine speed Curb idle speed oab 02 PO eet OO 7eLon9| (© Miesbieh Motors Gomporation Doe. 1097 Voltage at altematorB of terminal Time ZELONS NOTE Furthermore, the voltage waveform of the alternator B terminal can undulate as shown at left. This waveform is produced when the regulator operates according to fluctuations in the alternator load (current), and is normal for the alternator. wean? 16-8 CHARGING SYSTEM - Service Adjustment Procedures EXAMPLES OF ABNORMAL WAVEFORMS NOTE 1. The size of the waveform patterns differs largely depending on the adjustment of the variable knob on the analyzer. 2. |dentification of abnormal waveforms is easier when there is a large output current (regulator is not operat- ing). (Waveforms can be observed when the headlamps are illuminated.) 3. Check the conditions of the charge lamp [illuminated/not illuminated) also, and carry out a total check Abnormal waveforms Problem cause — > nd ( aan Example 2 }@ Short in diode a errs 8 a > Sonseorcl Example 5. }@ Open supplementary NOTE: At this time, the charge lamp is illuminated. 2 ‘© ttnaubishi Motors Corporation Dee. 1801 penaeo117 CHARGING SYSTEM - Service Adjustment Procedures/Alternator <4G13>_16-9 esos ALTERNATOR <4G13> REMOVAL AND INSTALLATION Post-installation Operation '#” Adjustment of Drive Belt Tension (Re- foro GROUP 11 Service Agjustment| Procedures.) Removal Steps 1. Drive bett (Air conditioner 2. Drive helt (Power steering) Brive belt (Alternator) 4. Water pump pulley 5. Alternator connector 8. ‘Alternator brace mounting bolt Alternator brace Altemetor ALTERNATOR RELAY CONTINUITY CHECK (1) Remove the alternator relay from the relay box inside the en- gine compartment. (2) Set the circuit tester to the @ range and check that there is continuity when the (+) terminal of the tester is connected to terminal @ of the alternator relay and the (—) terminal is connected to terminal ®. (3) Next, check that there is no continuity when the (+) terminal is connected to terminal ® and the (—) terminal is connected. to terminal ®. (4) If the continuity checks in steps (2} and (3) showa defect, re- place the alternator relay. 1680273 (© tmtsubihi Motors Corporation Dee. 1991 amen? 16-10 CHARGING SYSTEM - Alternator <4G13> Belt tension ‘© Mitsubishi Motors Corporation Dec. 1991 SERVICE POINTS OF REMOVAL evsseor 3. REMOVAL OF DRIVE BELT (ALTERNATOR) (1) Loosen the pivot bolt nut and the lock bolt as shown in the illustration, (2) Loosen the adjusting bolt and lift it upwards. (8) Push the alternator towards the engine to remove the drive belt. SERVICE POINTS OF INSTALLATION Et6BHOE 8 INSTALLATION OF ALTERNATOR/7. ALTERNATOR BRACE/3. DRIVE BELT (ALTERNATOR) (1) Install the alternator to the cylinder block and front case mounting boss with the pivot bolt, and provisionally tight- en the nut to still allow the alternator to move smoothly. (2) Insert the alternator brace between the power steering ll pump bracket and the water pump, and tighten it to the specified torque. (3) Press the alternator body towards the engine, and provir sionally tighten the alternator and alternator brace with the lock bolt. (4) Install the alternator drive belt and adjust the belt tension using the adjusting bolt. (Refer to GROUP 11 — Service Adjustment Procedures.) (6) After adjusting the belt tension, fully tighten the nut of the pivot bolt and the lock bolt to the specified torque, and then tighten the adjusting bolt to the specified torque Pest? CHARGING SYSTEM - Alternator <4G92, 4G93> 16-11 ¥ ALTERNATOR <4G92, 4G93> REMOVAL AND INSTALLATION Post-installation Operation ‘© Adjustment of Drive Belt Tension (Re- fer to GROUP 11 Service Adustment| Procedures.) Removal steps Drive belt (Power steering, ait conditioner) #942. Drive belt (Atemator) 3. Alternator connector 44. Alternator brace ®45. Altemator even 1080075 (© Msubiehi Motors Comporation Dee. 1601 SERVICE POINTS OF REMOVAL eocr 2. REMOVAL OF DRIVE BELT (ALTERNATOR) (1) Loosen the pivot bolt nut and the lock bolt as shown in the illustration. (2) Loosen the adjusting bolt and lift it upwards. (3) Push the alternator towards the engine to remove the. drive belt. pwete9117 16-12 CHARGING SYSTEM - Alternator <4G92, 4G93> SERVICE POINTS OF INSTALLATION cxowe 5. INSTALLATION OF ALTERNATOR/4. ALTERNATOR BRACE/2. DRIVE BELT (ALTERNATOR) (1) Install the alternator to the front case mounting boss with the pivot bolt, and provisionally tighten the nut to still allow the alternator to move smoothly. (2) Install the alternator brace to the water pump, and tight- enit to the specified torque. (3) Press the alternator body towards the engine, and provi- sionally tighten the alternator and alternator brace with the lock bolt. (4) Install the alternator drive belt and adjust the belt tension using the adjusting bolt. (Refer to GROUP 11 - Service Adjustment Procedures.) (8) After adjusting the belt tension, fully tighten the nut of the pivot bolt and the lock bolt to the specified torque, and then tighten the adjusting bolt to the specified torque. (© Miteubishi Motors Corporation Dee. 1091 pwnteort7 CHARGING SYSTEM - Alternator <4D68> 16-12-1 ALTERNATOR <4D68> REMOVAL AND INSTALLATION Pre-removal Operation Post-installation Operation Draining Engne OF ©” Supping Engine Ol '¢ Adjustment of Drive Belt Tension (Re- ferto GROUP 11 ~ Service Adjustment Procedures.) seso112 Removal steps Engine oil filter ‘Alternator brace bolt Brake booster vacuum hose connection Alternator connector Eye bolt Gasket Qil hose assembly connection Oil hose connection’ Altemator mount bolt ‘Alternator: Drive belt (Power steering) Drive belt (Air conditioner) Drive belt (Alternator) Water pump pulley Alternator brace ” ry o BEGNSSe@roMawns Engine oil (© Mtsubioni Motors Corporetion Jun 188 POMESTTT-A ‘appeD CHARGING SYSTEM - Alternator <4D68> SERVICE POINTS OF REMOVAL 10, REMOVAL OF ALTERNATOR (1) Remove the engine oil filter and check to be sure that these is enough space to take out the alternator. (2) Remove the alterator from the bottom of the engine compartment 11. REMOVAL OF DRIVE BELT (POWER STEERING) Loosen the power steering oil pump fixing bolt and remove the drive belt. 12, REMOVAL OF DRIVE BELT (AIR CONDITIONER) (1) Loosen tension pulley fixing bolt A. (2) Loosen adjustment bolt B and remove the drive belt. SERVICE POINTS OF INSTALLATION 1. INSTALLATION OF ENGINE OIL FILTER (1) Clean the filter bracket side mounting surface. (2) Apply a small amount of engine oil to the O-ring of the new oil filter. (3) Turn the oil filter by hand to install NOTE Tightening torque 20 Nm {2.0 kgm, 14 ft.lbs.} (4) Fill with engine oil (5) Race the engine 2-3 times, and check to be sure thatno ‘engine oil leaks from the installation section of the oil fil ter. {© Miteubish Motors Corporation Jun. 1092 PwnestT7-& ‘ADDED STARTING SYSTEM - Specifications <4D68> 16-13 STARTING SYSTEM SPECIFICATIONS GENERAL SPECIFICATIONS ‘STARTER <4G13> items MT - standard AT M/T - cold ciate zone Tee Direct dive Direct drive Rated output kw | 0.712 osn2 No. of pinion teeth 8 8 <4G92, 4G93> VEHICLES BUILT UP TO APRIL 1992 items MIT = standard aT MYT ~ cold climate zone Type Direct drive Direct drive Rated output kw | 0.712 oan2 No. of pinion teeth 8 8 VEHICLES BUILT FROM MAY 1992 lems: Mr ‘AIT cold climate zone AT~standard Type Direct drive Reduction drive with planetary gear Rated output kwN | 0.92 1.0/2 No. of pinion teeth 8 8 <éD68> Items Standard Cold climate zone Type Reduction drive with planetary gear | Reduction drive with planetary gear Rated output kw | 2.02 2an2 No. of pinion teeth 10 10 © Waubins Motor Comeraton . Jun. 1002 Purest revise 16-14 STARTING SYSTEM - Starter STARTER REMOVAL AND INSTALLATION <2WD> \ 8 3 kgm stelbs. stove Removal steps 41. Speedometer cable connection 2. Starter mounting bolt 8. Starter connector 4. Starner (© mtcubie ators Corporation Dee. 1881 Pwnweats7 IGNITION SYSTEM — Specifications 16-15 SPECIFICATIONS 08. GENERAL SPECIFICATIONS DISTRIBUTOR Items 4G13, 4692 ‘Type Contact pointiess with built-in ignition coil ‘Advance mechanism Electronic Firing order 1-3-4-2 ‘CRANK ANGLE SENSOR tems 4693 ‘Type Contact pointless Advance mechanism Electronic IGNITION Col Items. SOHC DOHC ‘Type Molded single-coil with a built-| Molded 2 coil in distributor Identification No, an F648 SPARK PLUG 4G92 (Except MW), items 4G13 4693 4G92-MW NGK BPRSES-11 BKR6E-11 BKR5E-11 NIPPON DENSO WI16EPR-11 K20PR-U11 KI6PR-U11 SERVICE SPECIFICATIONS IGNITION ColL Items 4G13, 4692 4G93 Primary coil resistance 2 | 09-12 0.70-0.96 ‘Secondary coil resistance kQ | 20-29 11.3-15.3 SPARK PLUG tems Specification Spark plug gap mm fin.) | 1.0-1.1 (0,039-0,043) (© Mitsubishi Motors Corporation Dee. 1998 pwates117.0 Revised 16-16 SPECIAL TOOL IGNITION SYSTEM — Special Tool/Service Adjustment Procedures Too! Number Name Use MB991348. Test hamess set | Inspection of ignition primary voltage High tension serminal 9EL0001 6810138 AtNo. 1 and No.4 cylinders. At No. 2 and No. 3 cylinders" SENOISS| © mtsubishi Deters Corporation Des. 1901 SERVICE ADJUSTMENT PROCEDURES eispcay IGNITION COIL INSPECTION <4G13, 4G92> (1) Measurement of the primary coil resistance Measure the resistance between connector terminal @and @ of the distributor. Standard value: 0.9-1.2 2 (2) Measurement of secondary coil resistance Measure the resistance between the high-voltage terminals and connector terminals @ or @ Standard value: 20-29 k2 <4G93> (1) Measurement of the primary coil resistance. Measure the resistance between connector terminals 3 and 2 {the coils at the No. 1 and No. 4 cylinder sides) of the igni- tion coil, and between terminals 3 and 1 (the coils at the No. 2 and No. 3 cylinder sides). Standard value: 0.70-0.86 (2) Measurement of secondary coil resistance. Measure the resistance between the high-voltage terminals for the No. 1 and No. 4 cylinders, and between the high-volt- age terminals for the No. 2 and No. 3 cylinders. Standard value: 11.3-15.3 kO Caution Be sure, when measuring the resistance of the second- ary coil, to disconnect the connector of the ignition coil. IGNITION SYSTEM - Service Adjustment Procedures 16-17 POWER TRANSISTOR INSPECTION <4G13, 4G92> NOTE An analogtype circuit tester should be used. (1) Connect the negative (—) terminal of the 1.5 V power supply to terminal © of the power transistor; then check whether there is continuity between terminal ® and terminal ® when terminal © and the positive (+) terminal are connected and r 4 disconnected. Distributor connector 3210058} NOTE ‘Connect the negative (—) probe of the circuit tester to termi- nal®, Terminal ® and (+) terminal | Terminal © and terminal @ Connected Continuity Unconnected No continuity (2) Replace the power transistor if there is a malfunction. <4G93> NOTE ‘An analogttype circuit tester should be used. No. 1-No. 4 coil side (1) Connect the negative (—) terminal of the 1.5 V power supply to terminal @ of the power transistor; then check whether there is continuity between terminal @ and terminal ® when terminal © and the positive (+) terminal are connected and disconnected. NOTE Connect the negative (—) probe of the cirouit tester to termi- nal ®. Terminal @ and (+) terminal _| Terminal @ and terminal ® Connected Continuity Uneonnected No continuity © Mitsubishi Motors Corporation Dec. 1961 wes 16-18 IGNITION SYSTEM - Service Adjustment Procedures 18V a2i3l4[sis/718. 61040] No. 2-No. 4 coil side (1) Connect the negative (—) terminal of the 1.5 V power supply to terminal @ of the power transistor; then check whether ‘there is continuity between terminal © and terminal @ when terminal @ and the positive (+) terminal are connected and disconnected. NOTE Connect the negative (—) probe of the circuit tester to termi- nal ©, Terminal @ and (+) terminal | Terminal @ and terminal @ Connected Continuity Unconnected No continuity If the problem is still evident after checking as described above, replace the power transistor. RESISTIVE CODE INSPECTION Measure the resistance of the all spark plug leads. (1) Check cap and coating for cracks. (2) Measure resistance. (© Mitsubishi Motors Corporation Dec. 1098 Unit : kQ ‘Spark plug cable No.1 No. 2 No.3 No. 4 4613 5 91 90 66 {G22 ny] 28 | 17 | 94 | es 4G92-MVV 53 49 39 36 4693 67 86 10.4 10.7 CHECKING THE DETONATION SENSOR <4G92, 4G93> Check the detonation sensor circuit if self-diagnosis code No. 31 is displayed. NOTE For information concerning the self-diagnosis codes, refer to GROUP 13 - Troubleshooting Pwaest37.0 eviseD IGNITION SYSTEM - Service Adjustment Procedures 16-19 Plug gap gauge Measurement ws 7 ae onors2| (© MitcubihtMotore Corporation Dee. 1001 SPARK PLUG CHECK AND CLEANING evar (1) Remove the spark plug cables. Caution ‘When pulling off the spark plug cable from the plug al- ways hold the cable cap, not the cable. (2) Remove the spark plugs (3) Check for burned out electrode or damaged insulator. Check for even burning. (4) Remove carbon deposits with wire brush or plug cleaner. Remove sand from plug screw with compressed air. (8) Use a plug gap gauge to check that the plug gap is within the standard value range. ‘Standard value: 1.0-1.1 mm (0.040-0.043 in.) If the plug gap is not within the standard value range, adjust by bending the ground electrode. (6) Clean the engine plug holes. Caution Use care not to allow foreign matter in cylinders. (7) Install the spark plugs. CRANK ANGLE SENSOR, TOP DEAD CENTER SEN- SOR INSPECTION Referto GROUP 13-On-vehicle inspection of MP! Components pwnteo137 16-20 IGNITION SYSTEM - Service Adjustment Procedures WAVE PATTERN INSPECTION USING AN ANALYz- ( ER (Ignition primary and secondary voltage wave forms) IGNITION SECONDARY VOLTAGE INSPECTION <4G13, 4G92> MEASUREMENT METHOD (1) Clamp the spark plug cable (No. 1, No. 2, No. 3 or No. 4) with the secondary pickup. (2) Clamp the No. 1 cylinder spark plug cable with the trigger pickup. STANDARD WAVE PATTERN Observation conditions FUNCTION ‘SECONDARY PATTERN HEIGHT HIGH (or LOW) PATTERN SELECTOR RASTER Engine Speed Curb idle speed y Sparkling : Ignition a Pomt a) voge ‘Pointy \ibetion Sameing section A eine) Ignition Stoondary volage Yt wave pate - Time 4 ( eons (© MitsubishiMotors Corporation Dee. 1091 PuMeatT7 IGNITION SYSTEM - Service Adjustment Procedures 16-21 ) WAVEFORM OBSERVATION POINTS Point A: The height, length and slope of the spark line (refer to abnormal waveform examples 1, 2, 3 and 4) show the following trends. Sparkline | Plug esp | Condition of | Compression | Concentration of | Ignition timing | Spark plug cable electrode force air misture © [ tong | smatt_ | Nowe! Low Rich Advanced Leak 5 [shot | tage | Large wear High Lean Retarded | High resistance = | Hin | tage | Large wear | High Lean Reterded | High resistence £ [cow [sma _ Normal low Fich Advanced Leak Slope | Lage | Pugisfouled | — = e e Point B: Number of vibrations in reduction vibration section (Refer to abnormal waveform example 5) ‘Number of vibrations: Coil and condenser Three or more Normal Except above Abnormal Point C: Number of vibrations at beginning of dwell section (Refer to abnormal waveform example 5) Number of wbretone | Coll 5-6 or higher Normal Except above Abnormal Point D: Ignition voltage height (distribution per each cylinder) shows the following trends. Ignition | Plug gap | Condition of | Compression | Concentration of | ignition timing | Spark plug cable Y | votege electrode | force air mire High | Lage | Lergewear | High Lean Retarded | High resistence Low ‘Small Normal. Low Rich Advanced Leak (© Mitsubishi Motors Corporation D418 PwMeon7 16-22 IGNITION SYSTEM ~ Service Adjustment Procedures EXAMPLES OF ABNORMAL WAVEFORMS ‘Abnormal waveform Wave characteristics Cause of problem Example 1 ‘Spark ine is high and short. | Spark plug gap is too large. _ ovroais Example 2 Spark line is low and long, and | Spark plug gap is too small. is sloping ‘Also, the second half of the “ spar line is distorted. This could be a result of misfiring orpo2s Example 8 Spark line is low and long, and | Spark plug gap is fouled. ” is sloping. However, there is a almost no spark line distortion o1v0217 Exemple 4 ” Spark fine is high and short ‘Spark plug cable Is nearty fal Difficult to distinguish between | ing off. (Causing a duel ian this and abnormal wave pattern | tion) example 1 orronta Example 6 No waves in wave damping | Rare short in ignition coil. section ” ue ovpo2te © miteubiensMotor Comorstion Dee. 1991 Pomeon7 =) IGNI ITION SYSTEM — Service Adjustment Procedures 16-23 <4G93> Qo “? MEASUREMENT METHOD AO (1) Clamp the secondary pickup around spark plug cable. Sy NOTE 1. The peak of the ignition voltage will be reversed when xV 77 ” the spark cables of No. 2 and No. 4.cylinders are clamped and when the spark plug cables of No. 1 and No. 3 cylin- NS > ders are clamped. \\ 2. Because of the two-cylinder simultaneous ignition sys- ‘¥en0229| tem, the waves for two cylinders in each group appear during wave observation (No. 1 cylinder — No. 3 cylinder, No. 2cylinder—No. 4 cylinder). However, wave observe- tion is carried out for the cylinder with’ the spark plug cable clamped by the secondary pickup. (2) Clamp the spark plug cable with the trigger pickup. NOTE 1. Clamp the spark plug cable for the No. 1 and No. 3 cylin- der of the same group with the cylinder that is clamped. with the secondary pickup. 2. Identification of which cylinder wave pattern is displayed can be difficult, but the wave pattern of the cylinder which is clamped with the secondary pickup will be stable, so this can be used as a reference for identifica- tion. FUNCTION SECONDARY PATTERN HEIGHT HIGH (or LOW) PATTERN SELECTOR RASTER Engine Speed Curb idle speed w ‘Spark line 4 one Laon SEE oi 01 Wve camping ection Seton Fan Secondary iA fan wal section a 7 \o Tine on c eetore2 WimsinitoersConerioa 11 a 16-24 IGNITION SYSTEM - Service Adjustment Procedures Observation conditions (Only pattern selector below changes from the above conditions.) PATTERN SELECTOR DISPLAY 5 Ww No.4 cylinder No, 2 oyinder No. oyinder No.3 ofnger igren'niee Toren alee sez / ‘grton forage vwavelorm 3 =f ai 1 Time | Neural secon ee10189 Caution ‘As measurements are made by the clamp-type probe, voltage values such as ignition voltage will be different from actual values. WAVEFORM OBSERVATION POINTS Refer to 16-21 EXAMPLES OF ABNORMAL WAVEFORMS Refer to 16-22. (© misubishimotors Corporation Dee. 1961, wene9117 IGNITION SYSTEM - Service Adjustment Procedures 16-25 9ELO00S STANDARD WAVE PATTERN Observation conditions IGNITION PRIMARY VOLTAGE WAVE PATTERN CHECK <4G13, 4G92> MEASUREMENT METHOD (1) Disconnect the distributor 2 pin connector and connect the ‘special tool (test harness: 8991348) inbetween. (Allof the terminals should be connected.) (2) Connect the analyzer primary pickup to the distributor con- nector terminal @ (3) Connect the primary pickup earth terminal (4) Clamp the spark plug cable with the trigger pickup. NOTE The wave pattern of the cylinder clamped to the trigger pick- Up will appear at the left edge of the screen 100f Approx. 40 x 10V) Dwell Ignition primary Voltage wave pattern © mitsubishi Motors Corpration Dee. 1881, FUNCTION SECONDARY PATTERN HEIGHT HIGH (or LOW) PATTERN SELECTOR RASTER Engine Speed Curb idle speed “ Zener voltage oint Spark line Point A i ee Secon / iPoie By —— Time zewon2 pwnestt7 16-26 IGNITION SYSTEM - Service Adjustment Procedures Observation conditions (Only the pattern selector shown below changes from the previous conditions) PATTERN SELECTOR | DISPLAY wy 100 Conve section Ignition primary [7] Voltage wave 0 pattern a 98.0006 WAVEFORM OBSERVATION POINTS Point A: The height, length and slope of the spark line (refer to abnormal waveform examples 1, 2, 3 and 4) show the following trends. ‘Spark line Plug gap | Condition of | Compression | Concentration of | Ignition timing High tension eloctode force ‘ir mibture cable % Long ‘Small Normal | Low Rich Advanced Leak 3 | Shor Large Large wear High Lean Retarded High resistance z | High | Lage | Large wear High Lean | Retarded | High resistence E [tow | sma [Normal Low Rich ‘Advanced Leak Slope Large Plug is fouled - - - - Point B: Number of vibrations in reduction vibration section (Refer to abnormal waveform example 5) Number of vibrations Coil, condenser 3 or higher Normal Except above Abnormal Point C: Height of Zener voltage Height of Zener voltage | Probable cause High Problem in Zener diode Low Abnormal resistance in pri- mary coil circuit (© Mitsubishi Motors Corporation Dec. 1991 Pest? IGNITION SYSTEM - Service Adjustment Procedures 16-27 EXAMPLES OF ABNORMAL WAVEFORMS: ‘Abnormal waveform Wave characteristics Cause of problem is sloping. However, there is almost no spark line distortion. Example 1 ‘Spark line is high and short. ‘Spark plug gap is too large. ie Example 2 Spark line is low and long, and | Spark plug gap is too smal. sloping. Also, the second half of the spark line is distorted. This eee rnnal we Example 3 ‘Spark line is low and long, and ‘Spark plug gap is fouled. Spark line is high and short Spark plug cable is nearly fal- ling off. (Causing a dual ignition) Example 6 ‘No waves in wave damping | Rare short in ignition col section ” ovo (© MisubishiMotors Comporation Dee. 1891 pwnests7 16-28 IGNITION SYSTEM - Service Adjustment Procedures <4G93> MEASUREMENT METHOD {1) Disconnect the ignition coil connector and connect the spe- ial tool (test harness: MB991348) inbetween. (Allof the ter- minals should be connected.) (2) When observing the No.2 - No.3 cylinder group, connect the iy Oe oscilloscope probe to the ignition coil side connector termi- nal © (red clip on the special tool). For the No.1 - No.4 oylin- der group, connect to terminal @ (black clip). cnone| (3) In order to distinguish which observed waveform pertains to Bae teeter which cylinder, and to check the synchronization accurately, Injector control signal| Waveform to be simultaneously observe the injector control signals. for synchronization | observed Also, simultaneous observation of the TDC sensor output No.1 i No.4 waveform will enable the cylinders to be differentiated. (For ey the measurement methods for the injectors and TDC sensor, No.2 [No.3 refer to GROUP 13 - On-vehicle Inspection of MPI Compo- No.3 No.2 nents.) No. 4 i No.1 STANDARD WAVE PATTERN Observation conditions FUNCTION SECONDARY PATTERN HEIGHT HIGH {or LOW} PATTERN SELECTOR RASTER Engine Speed Curb idle speed ™ Zener woltage Bote | rite rook (Approx. 40 % 10¥) ‘Point \ibeation damping ‘section Point) Ignition ‘roheos wave ae pattern : SELOTG4 (© miteubishitMotore Corporation Dee. 1901 Pumeont7 IGNITION SYSTEM - Service Adjustment Procedures Observation conditions {Only the pattern selector shown below changes from the previous conditions) 16-29 6ELOIBS rarremnseiecron | osruay ” vo Ho2vinge We oder wrinotncs lpn Ed ] ‘Sos Ti one cassis ‘WAVEFORM OBSERVATION POINTS Refer to 16-26. EXAMPLES OF ABNORMAL WAVEFORMS Refer to 16.27. © Mitsubishi Motors Corporation Dec. 1901 pwnaeot17 16-30 IGNITION SYSTEM - Distributor DISTRIBUTOR son. REMOVAL AND INSTALLATION Post-installation Operation Je" Engine Agjustment (Refer to GROUP: 11" Service Adjustment Procedures.) Removal steps 4. Spark plug cable connection 2. Distributor connector 43. Sealing tape 44, Distributor INSPECTION ‘etson CAMSHAFT POSITION SENSOR, CRANKSHAFT POSITION SENSOR Refer to GROUP 13-On-Vehicle Inspection of MP! Components. SERVICE POINTS OF INSTALLATION ‘exeonoe 4, INSTALLATION OF DISTRIBUTOR {1) Remove the timing belt upper cover. (2) Turn the crankshaft clockwise to align the timing marks. NOTE The No. 1 oylinder will be at compression top dead centre if the timing mark on the camshaft sprocket is aligned with the timing mark on the oylinder head. (3) Align the mating mark on the distributor housing side with the mating mark on the coupiing side. (4) Install the distributor to the engine while aligning the dis- ‘ributor fixing stud bolt with the oblong hole on the dis- tributor mounting flange. 3. INSTALLATION OF SEALING TAPE Mena ras After adjusting the ignition timing, apply seating tape. ese sere Nika Motor Corpormon sun 152 onmesr-& revise IGNITION SYSTEM - Crank Angle Sensor <4G93> 16-31 CRANK ANGLE SENSOR <4G93> ol REMOVAL AND INSTALLATION 1 Dogtignataton Operation are Y me TERETE cence ase a a a Hee Removal steps: Noakeed © 2. Sealing tape © 3. Crank angle oa SERVICE POINTS OF INSTALLATION eveoLas eens side matin mark : (© mitsubishi Motors Comporation Dee. 1991, 3. INSTALLATION OF CRANK ANGLE SENSOR (1) Turn the crankshaft clockwise to align the crankshaft pulley notch and the timing mark and to set the No. 1 cy inder to compression top dead centre. Caution note that when the timing mark and the notch ined, the No. 4 cylinder will also be at com- pression top dead centre, (2) Align the mating mark on the crank angle sensor hosing side with the mating mark on the coupling side. (3) Install the crank angle sensor tothe engine while aligning the crank angle sensor fixing stud with the oblong hole ‘on the crank angle sensor mounting flange. 2. INSTALLATION OF SEALING TAPE ‘After adjusting the ignition timing, apply sealing tape. wacort7 16-32 IGNITION SYSTEM - Detonation Sensor <4G93> DETONATION SENSOR <4G93> evn REMOVAL AND INSTALLATION Removal steps 1. Detonation sensor connector 2 Intake manifold stay 3. Detonation sensor Caution Do not subject the detonation sensor to any shocks. a INSPECTION exeomea DETONATION SENSOR Refer to GROUP 13-On-Vehicle Inspection of MPI Components. (© tmteubishi Motors Corporation Jun, 1892 PwMESTT?-A GLOW SYSTEM — Service Adjustment Procedures 16-33 GLOW SYSTEM SPECIFICATIONS SERVICE SPECIFICATIONS ev6ea- tems Specifications Standard value Glow plug resistance at 20°C (68°F|] 2 0.20-0.26 04-06 Dropping resistor resistance [at 20°C (68°F) 2 0.15-0.17 Engine coolant temperature sensor resistance [at 20°C (68°F) ka | 2.92-3.58 SEALANT e686 tem Specified sealant Remark Engine coolant temperature sensor 3M Nut Locking Part No. 4171 or Drying sealant equivalent (© Witsubishi Motors Corporation De, 1898 Ponwesti7 Revise 16-34 GLOW SYSTEM — Service Adjustment Procedures SERVICE ADJUSTMENT PROCEDURES ewe0a SUPER QUICK GLOW SYSTEM ‘SUPER QUICK GLOW SYSTEM INSPECTION Glow control unit Dropping Glow plug resistor” relay? [3 Glow plug relay 1 [ sunt | Soc Charging lamp <3 Ignition switch (1) Check that the battery voltage is 11-13V. {2} Check that the engine coolant temperature is 40°C (104°F) or less, NOTE If the engine coolant temperature is too high, disconnect the engine coolant temperature sensor connector. S (3) Measure the resistance between the glow plug plate and the glow plug body (earth). Standard vatue: 0.05-0.07 0 [at 20°C (68°F)] NOTE The resistance value is the parallel resistance value for the four glow plugs. HRY (© taksubishiMotors Corporation un 1952 PwMestt7-8 ‘an0eD GLOW SYSTEM - Service Adjustment Procedurs 16-35 (4) Measure the resistance between the (G) terminal of glow plug relay 2 and the glow plug plate. ‘Standard value: 0.15-0.17 0 Caution Measure the resistance after checking that battery voltage is not applied to the (G) terminal (5) Connect the voltmeter between the glow plug plate and the glow plug body. z (6) Measure the voltage immediately after the ignition switch is tumed to “ON” (without starting the engine), Standard value: 9-11V (after approx. 2-4 seconds it drops to OV) NOTE The time taken for the voltage to drop will vary depending on the temperature of the glow plugs and the voltage applied. (Refer to the reference illustration.) (7) Measure the voltage while the engine is cranking Standard value: 4V or more (8) Start the engine and measure the voltage while the engine is warming up. However, if the engine coolant tempera- ture increases to 55°C (131°F) or more, or if 180 seconds have elapsed since the engine was started, the voltage will normally become OV. (Refer to the reference illustra tion on the next page.) ‘Standard value: §-7 V Reference Relationship between glow plug temperature (resistance value) and current flow time ia Example © When battery voltage is normal (SV or above} ad the gay plugs re old, evan to het tho lugs to SOU+C (1852°F) or more takes appront Inately$ seconds. Botteryvoltage decrease time @ On tig other hand, when battery voltage is nor ‘mal (SV or more) and the glow plugs are hot {500°C (o32"F oF more, the te taken for cur fentts flows reduced. ‘Quick heating time (sec) ° 500 (982) 7000 (1832) Glow plug temperature CF] onnoata (© Mieibiani Motors Corporation Jun. 282 FUMES "ADDED 16-36 GLOW SYSTEM - Service Adjustment Procedures Reference Glow plug current timing chart Ignition START. suitor Oy J OFF. t Alternator = H+ 1} + terminal t Glow plug ON + relay [1] OFF, 1 Y r ' i Glow plug ON CS ooo relay (2) OFF—{_L_t I ! 1 1 1 1 1 1 1 t ' hi t Int 1 i! 1 —_S 1 7 tt be t t 1 Th: Quick heating time Te! Glow plug relay 1] drive time when engine is cranking DELOGo Te: Glow plug relay [2] drive time after engine starts (alter glow) NOTE After clow occurs only when engine coolant temperature is approximately 55°C (131°F) or less, and for approximately 180 ‘seconds after the engine Is started, it turns ON and OFF to prevent the temperature of the glow plugs from exceeding the target temperature [approx. 900°C (1,882°F]). GLOW CONTROL UNIT INSPECTION | he v [BF 2 Glow &EGR contol unt Vehicles with EGA> — [ELE] Glow cnt unt Vehicles without EGR> oRCONTROL CONNECTOR DeNo7es (© MaReubINT Motors Corporation Jun. 1992 PUMESTTT-A "ADDED GLOW SYSTEM - Service Adjustment Procedures (1) Measure the voltage at the control unit terminals. NOTE 41. Inspect with the control unit connector connected. 16-37 2. When measuring the voltage, connect the control unit terminal (10) to the earth. Terminal Voltage Reference Table [Control unit Inspection item Inspection conditions Standard value inspection terminal : a Ignition switel Ignition switch “OFF” + “ON” Battery voltage {iG power suppy) “ON” = “OFF 0- 08v 2 Ignition switch Ignition switch “OFF” = “START” | More than 8v. (ST power supply) 26 Alternator Ignition switch “OFF > “ONT 1-4 L+terminal idle More than 11V 2 Glow plug relay 1 | Ignition switch “OFF = “ONT o- Ww After approx. 3 seconds o-o5v 28 Glow plug relay 2 Ignition switch "OFF" — “ON” 9-124 After approx. 3 seconds, 0- o5v 33, Engine coolant ‘ignition switch] When engine coolant ape temperature sensor| “OFF = "ON" | temperature is 20°C (—4°F) When engine coolant temperature is O°C (32%) | 97 ~ 39V When engine coolant temperature is 20°C (ear) | 28~30V , When engine coolant temperature is 40°C (104°F) teenie When engine coolant temperature is 80°C (176%) | 05 ~ 0.7V View of harness-side conné contro! unit from terminal side (136) (2) Remove the control unit connector and check the con- tor of glow tinuity between the hamess-side connector terminals. Tnspection terminal | Inspection item Continuity 46 | 25 | 24 X25] 22 [28 (resistance value} | s[ st] 20 | 29] 28 {27 24-30 Glow plug constant | Continuity current circuit (approx. 0.08) Earth 25-31 Glow plug voltage | Continuity measurement (approx. 0.069) erocoe circuit : 27-30 Glow plug relay 1 | Continuity (approx. 20.0) 28-30 Glow plug relay 2 | Continuity (approx. 20 9} (© MiksubichiMotore Corporation Jun 1052 PwMestT7-A ‘ADDED 16-38 GLOW SYSTEM - Service Adjustment Procedurs Dropping resistor (© Mieubish Motors Corperstion un. 1902 DROPPING RESISTOR INSPECTION {1) Disconnect the dropping resistor connector. {2) Measure the resistance between the dropping resistor terminals. Standard value: 0.15-0.17 © [at 20°C (68°F) Pumest7-8 ‘ADDED GLOW SYSTEM - Service Adjustment Procedurs 16-39 GLOW PLUG RELAY INSPECTION (1) Check to be sure that there is continuity (approx. 20 0) between glow plug relay terminals (CHE). (2) Use jumper leads to connect the glow plug relay terminal (C) with the battery (+) terminal and terminal (E) with the battery (-) terminal. Caution : 1. Before using the jumper leads, the harnesses con- nected to glow plug relay (B) and (G) terminals must always be disconnected. a 2. Do not short out the disconnected harness-side oon terminals to the earth. Glow plug relay (No. 1) 3. Be extremely careful when connecting the jumper leads, as if the terminals are connected incorrectly, it will damage the relays. (3) Check the continuity between giow plug relay (B) and (G) © terminals with the jumper lead connected to the battery (—) $ terminal and with the jumper lead disconnected. Jumper lead from battery | Continuity between terminals omos20 (=) terminal @)-() Glow plug relay (No. 2) Connected Continuity (0.01 © or fess) Disconnected No continuity (20 ) e10007 Glow Battery ‘Controt Pug nit DeLos27 (© Mitsubishi Motors Corporation dun. 1982 Punear78 appeD 16-40 GLOW SYSTEM - Service Adjustment Procedurs GLOW PLUG INSPECTION (1) Remove the glow plug plate. (2) Measure the resistance between the glow plug terminals, and the body. Standard value: 0.20-0.26 © [at 20°C (68°F)] ENGINE COOLANT TEMPERATURE SENSOR INSPECTION (1) Remove the engine coolant temperature sensor, © Sree ce {eR eaie Tesora (2) While the sensor section of the engine coolant tempera- ture sensor is submerged, measure the resistance be- tween (B) terminal and the body. Temperature (°C (°Fi] Resistance value (KO) —20 (-4) 248225 0 (32) 86 20 (68) 3.254033 40 (104) 18 80 (176) 03 (3) After applying specified sealant to the thread, tighten to the specified torque. Specified sealant: 3M Nut Locking Part No. 4171 or equivalent 35 Nm (3.5 kgm, 25 ft.lbs.) (© Mtsubishi Motors Corporation Jun. 1882 PWMRESt TA ‘ADDED GLOW SYSTEM -— Service Adjustment Procedures 16-40-1 SELF-REGULATING GLOW SYSTEM SELF-REGULATING GLOW SYSTEM INSPECTION Glow plug relay Glow plugs. temperature sensor Glow contro unit Pre-heat indicator lamp Charge lamp ‘ON |__ST @= Starter m ( Mate Em Tanition switch = + Battery DENOO62 3 La / i | e.0eco| (© Mitsubishi Motors Corporation Dec. 1992 a) 2) @ Check that the battery voltage is 11-12V. Check that the engine coolant temperature is 40°C (104°F) orless, NOTE If the engine coolant temperature is too high, disconnect the ‘engine coolant temperature sensor connector. Measure the resistance between the glow plug plate and the glow plug body (earth), Standard value: 0.1-0.15 @ [at 20°C (68°F)] NOTE ‘The resistance value is the parallel resistance value for the four glow plugs. pwnest17.0 ‘ADDED 16-40-2 GLOW SYSTEM Service Adjustment Procedures (4) Connect a voltmeter between the glow plug plate and the glow plug body (earth. (6) Measure the voltage immediately after the ignition switch is turned to ON {without starting the engine). ‘Standard value: 9-11 V (Drops to 0 V after 4-8 seconds have passed) In addition, check to be sure that the glow indicator amp (ced) illuminates immediately after the ignition switch is turned to ON. NOTE The time during which the voltage appears {energising time) will depend on the engine coolant temperature. (6) Measure the voltage while the engine is cranking. Standard value:6 V or more (7) Start the engine and measure the voltage while the engine is warming up. However, if the engine coolant temperature rises above 60°C or when 180 seconds have passed sine the engine was started, the voltage will always return to 0 V. (Refer to the Glow Piug Energisation Timing Chart.) Standard value:12-16 V Glow Plug Energisation Timing Chart START lorition saitch 7 ore —I 1 — ‘Glow indicator on lamp OFF 7 : ‘ ir t 13. ‘ io a a plug) : flay OFF i ‘Alternator 4 Uterminal L Ty: Glow indicator lamp Tp: Glow plug relay drive time after ignition switch is turned ON ENO063 Ts: Glow plug relay drive time after engine starts (afterglow) NOTE ‘Afteralow time T3 becomes longer as the engine coolant ternperature drops. © Minsubishi Motors Corporation Dee. 1892 Pwnest17.9 ‘ADDED GLOW SYSTEM — Service Adjustment Procedures 16-40-3 GLOW CONTROL UNIT INSPECTION ~~ ‘Glow control unit @ a Sa Gal EAS 2 CET TER) i ea Vehicles without EGR> ‘ DENOB21. (1) Measure the voltage at the control unit terminals. NOTE 1. Inspect with the control unit connector connected. 2. When measuring the voltage, connect the control unit terminal 13 (10 for vel to the earth. Terminal Voltage Reference Table Tonal unit inspection Inspection item Inspection conditions Standard valve terminal ignition swich ’ "OFFS FON Batiory vorage (1G power supayy_| lanton switen "ON" = "OFF 0-05 > Ignition switch “O-1V 1 Glove indicator “OFF” > “ON” ate apport | seconds o ‘amp + Engine coolant br 20°C (eerh} temperature 40°C (104°) oF fess T=13v ry — remington switch “OFF” => "ON? =a 2 Aerator terminal |S wv © loniton switch aaa caw apo = 4 *OFF* > “ON” spproximately 8 secon r Glow plug rey | « engine coolant Er 20° (eer) temperature 40°C (104°F) of less 0-05V. 2z Igniton switch Tapa 7 ‘ Suk | ignition switch ‘OFF > "START ‘More than 8V Engine coolant | Tgilin swiich [| When engine cootent temporeter eonsor | “rE "ON" | temperature fe -20C Ca°F) 43-48V When engine coolant temporature's OC GF) Sime 5 ‘When engine codlent 1 temperature ts 20°C (68°F) oe ‘When engine coolant temperature fs 40°C (LOE) 19021V ‘When enghe coolant temperature 18 60°C (176°F} ora NOTE ‘> indicates vehicles without EGR. (© Mitsubishi Motors Corporation Dee. 1903 Pwnaest17.> ‘ApoED 16-40-4 GLOW SYSTEM = Service Adjustment Procedures View of hamnsss-side connector of glow ‘control unit from terminal side ‘Vehicles with EGR> (2) Remove the control unit connector and check the continuity between the harness-side connector terminals. Inspection terminal | Inspection item Continuity i hi hah a a (resistance value] i i in 18-14 Glow plug relay Continuity Vehicles without EGR> rei (approx. 30) 615 [4p]3]2[1 NOTE kahajiiiolatal7 +: indicates vehicles without EGR. DENOB22 GLOW PLUG RELAY INSPECTION ) terminal Caution nected to glow plug relay ter! fore using the jumper cables. (2) The terminals of the not be shorted to earth. cable at the battery (+) terminal, (1) Check to be sure that there is continuity (approx. 3.) be- tween glow plug relay terminal (C) and the bracket (earth) (2) Use jumper cables to connect terminal (C) of the glow plug relay to the battery (+) terminal and the bracket to the battery (1) Always be sure to disconnect the harnesses con- nals (B) and (G) be- isconnected harnesses must (3) When connecting the jumper cables, be very careful not to make a mistake in connecting the terminals, as this will cause damage to the relay. (3) Check the continuity between glow plug relay terminals (B) and (G) while disconnecting and connecting the jumper Jumper cable at battery (+) terminal | Continuity between ter- Is (B46) Connected Continuity (0.01 2 or less) Disconnected No continuity (co ©) Earth t (—¢@ | { oo TION LAL | Pesce! ater to P3040 1S Msubishi Motors Corporation Dee. 1882 Pwnesty7.0 bracket) Detaoi7 7 J] GLOW PLUG INSPECTION (1) Remove the glow plug plate. (2) Measure the resistance between the glow plug terminals ) and the body / \ / ‘Standard value: 0.4~ 0.6 © [at 20°C (68°F)] ENGINE COOLANT TEMPERATURE SENSOR INSPEC- ‘ADDED GLOW SYSTEM - Glow plug GLOW PLUG en REMOVAL AND INSTALLATION 138m g 0.13 kgm 0.9 tbs. ———¥ gee 18Nm 1B kgm 13 tls. 3 a sernaes Removal steps 1. Connector connection 2: Glow plug plate 49 963. Glow plug SERVICE POINTS OF REMOVAL oie 3. REMOVAL OF GLOW PLUG Remove glow plug by hand after loosening with tool as its ceramic part is fragile. SERVICE POINTS OF INSTALLATION Et6BHDA 3, INSTALLATION OF GLOW PLUG Tighten glow plug with tool after screwing in by hand as its ceramic part is fragile. (© Msubiehi motors Corporation Dee. 1891, Pwneont7 NOTES

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