Mitsubishi Montero (1991+). Manual - part 42

pump. If fuel pressure drops slowly, fuel injector is leaking or fuel

pressure regulator valve seat is leaking. Check for faulty fuel

injector or fuel pressure regulator. Repair as required.

         11) When fuel pressure test is complete, repeat fuel pressure

release procedure in steps 1) and 2) before disconnecting fuel

pressure gauge. Install new "O" ring at end of high pressure hose.

Check for fuel leaks.

FUEL PUMP TEST TERMINAL LOCATION TABLE

Application              Wire Color                           Location

Colt, Colt 200  .........  BLK/WHT  ..............  Center Of Firewall

Colt Vista  .............  BLK/WHT  ........  Right Center Of Firewall

Eclipse  ................  BLK/WHT  ..........  Rear Of Battery Compt.

Galant  .................  YEL/GRN  ...........  Left Rear Eng. Compt.

Mirage 1.5L  ............  BLK/WHT  ..............  Center Of Firewall

Mirage 1.6L  ............  BLK/BLU  ..............  Center Of Firewall

Montero  ..................  WHT  ..........  Right Center Of Firewall

Pickup  .................  BLK/BLU  .......  Right Side Of Eng. Compt.

Precis  ...................  YEL  .............  Left Rear Eng. Compt.

Summit  .................  BLK/WHT  ..............  Center Of Firewall

Ram-50  .................  BLK/BLU  .......  Right Side Of Eng. Compt.

Stealth, 3000GT  ........  BLK/BLU  ..........  Rear Of Battery Compt.

REGULATED FUEL PRESSURE TABLE

                                At Idle                   At Idle

                                w/Vacuum               w/o Vacuum

Application                   psi (kg/cm



)           psi (kg/cm



)

Non-Turbo  ..................  38 (2.7)  .......  47-50 (3.3-3.5)

Turbo

  Except Eclipse A/T  .......  27 (1.9)  .......  36-38 (2.5-2.7)

  Eclipse A/T  ..............  33 (2.3)  .......  36-38 (2.9-3.2)

         Control Relay

         Multipurpose relay switches power to vehicle sensors and

actuators including airflow sensor, crank angle sensor, idle speed

control, injectors and fuel pump. When ignition switch is turned to ON

position, ECU energizes coils controlling injectors, airflow sensor

and idle speed control. When ignition switch is turned to START

position, ECU energizes coils (through inhibitor switch on A/T models)

to supply power to fuel pump. Relay failure will cause a no-start

condition. For testing procedure, see SYSTEM & COMPONENT TESTING

article.

         IGNITION CHECKS

         SPARK

         Check for spark at coil wire (if applicable) and at each

spark plug wire using a high output spark tester. Check spark plug

wire resistance on suspect wires. For wire resistance specification,

see C - SPECIFICATIONS article in the ENGINE PERFORMANCE Section.

         CRANK ANGLE SENSOR

         For crank angle sensor testing procedure on all models except

Ram-50, Stealth, Eclipse, Laser, Pickup and 3000GT, see TEST NS-5:

TESTING CRANK ANGLE SENSOR CIRCUIT - G - TESTS W/CODES article in the

ENGINE PERFORMANCE section.

         On Eclipse and Laser, see NS-4A: REPAIRING CRANK ANGLE SENSOR

in  G - TESTS W/CODES - 1.8L article.

         On Ram-50, Stealth, Pickup and 3000GT testing information not

available at time of publication.

         DISTRIBUTORLESS IGNITION SYSTEM (DIS)

         Ignition Coil Resistance (4-Cyl Vehicles Except Eclipse 2.0L)

         1) Using a Digital Volt/Ohmmeter (DVOM), measure primary coil

resistance between ignition coil connector terminals No. 2 and No. 3

(coils for cylinders No. 1 and No. 4) and terminals No. 1 and No. 3

(coils for cylinders No. 2 and No. 3). See  Fig. 2.

Fig. 2:  Testing Ignition Coil Primary Resistance (4-Cylinder)

Courtesy of Mitsubishi Motor Sales of America.

         2) Measure secondary coil resistance between coil towers for

cylinders No. 1 and No. 4 and between coil towers for cylinders No. 2

and No. 3. See Fig. 3. Primary and secondary coil resistance should be

within specification. See DIS IGNITION COIL RESISTANCE table.

Fig. 3:  Testing Ignition Coil Secondary Resistance (4-Cylinder)

Courtesy of Mitsubishi Motor Sales of America.

         Ignition Coil Resistance (Eclipse 2.0L)

         1) Using a DVOM, measure primary coil resistance between

ignition coil connector terminals No. 2 and No. 4 (coils for cylinders

No. 1 and No. 4) and between terminals No. 4 and No. 1 (coils for

cylinders No. 2 and No. 3). See Fig. 2.

         2) Measure secondary coil resistance between coil towers for

cylinders No. 1 and No. 4 and between coil towers for cylinders No. 2

and No. 3. See Fig. 3. Primary and secondary coil resistance should be

within specification. See DIS IGNITION COIL RESISTANCE table.

DIS IGNITION COIL RESISTANCE TABLE Ohms @ 68



F (20



C)

Application              Primary              Secondary

All Models  ...........  .77-.95  ..........  10.3-13.9

         Power Transistor (Eclipse)

         1) Disconnect power transistor connector. Using an analog

ohmmeter, connect positive ohmmeter lead to terminal No. 7 and

negative lead to terminal No. 3. See Fig. 4. Ensure there is no

continuity.

Fig. 4:  Power Transistor Connector ID (Eclipse)

Courtesy of Mitsubishi Motor Sales of America.

         2) Using a 1.5-volt dry cell battery, connect positive end of

1.5-volt battery to power transistor terminal No. 6 and negative end

to terminal No. 3. Ohmmeter should now read continuity between power

transistor terminals No. 7 and No. 3.

         3) Connect positive end of 1.5-volt battery to power

transistor terminal No. 2 and negative end to terminal No. 3. Connect

positive ohmmeter lead to terminal No. 1 and negative lead to terminal

No. 3. Ohmmeter should read continuity. Replace power transistor if it

does not test as described.

         Power Transistor (Colt Vista, Galant, Montero, Pickup &

         Ram-50)

         1) Disconnect power transistor  connectors. Using a DVOM,

connect positive ohmmeter lead to terminal No. 2 and negative lead to

terminal No. 3. See Fig. 5. Ensure there is no continuity.

         2) Using a 1.5-volt dry cell battery, connect positive end of

1.5-volt battery to power transistor terminal No. 1 and negative end

to terminal No. 2. DVOM should now read continuity at power transistor

terminals No. 2 and No. 3. Replace power transistor if it does not

test as described. See Fig. 6.

Fig. 5:  Power Trans Conn ID (Colt Vista, Galant, Montero, P/U & Ram

50)

Courtesy of Mitsubishi Motor Sales of America.

Fig. 6:  Testing Power Trans (Colt Vista, Galant, Montero, Pickup &

Ram-50)

Courtesy of Mitsubishi Motor Sales of America.

         Power Transistor (Colt, Colt 200, Mirage & Summit)