Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 279
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-315
STEP 19. Using scan tool MB991502, check data list item
73: Fuel Tank Differential Pressure Sensor.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Remove the fuel cap.
(4) Set scan tool MB991502 to the data reading mode for item
73, Fuel Tank Differential Pressure Sensor.
•
The fuel tank pressures should be
−
1.5 to 1.5kPa.
(5) Connect an evaporative emission system pressure pump to
the fuel filler neck, and apply pressure.
•
The scan tool reading should increase.
Q: Is the scan tool reading within the specified value?
YES : Go to Step 26.
NO : Replace the ECM or PCM. Then go to Step 26.
STEP 20. Check for clogging in the evaporator line from
hose G to hose I and from hose L to hose P.
(1) Remove the module bracket mounting bolts, and
disconnect hose G from the evaporative emission
ventilation solenoid side, and plug the hoses from which the
hoses have been disconnected.
(2) Install the EVAP pressure pump outlet hose to the fuel tank
filler neck as described in the pump manufacturer's
instructions.
(3) On the EVAP pressure pump, set the pressure/hold valve to
OPEN, and set the vent valve to CLOSED.
(4) Turn the pump timer to ON. You can reset the timer as
required. (These settings are listed under "Leak Test" in the
pump instructions.)
(5) When the hose G is unplugged, the air passes through the
hose G.
Q: Does air pass through the hose G?
YES : Go to Step 21.
NO : Go to Step 23.
AC001252
MB991502
16 PIN
AB
AC000186
AC002028 AB
HOSE G
OPEN
OPEN
CLOSED
CLOSED
Pressure
Hold
Vent
ACX01806