Mitsubishi 3000GT Service Manual page 196

TROUBLESHOOTING HINTS
Hint 1: If the barometric pressure sensor is faulty, poor driveability is caused at high altitude, in particular.
Hint 2: If the pressure indication of the barometric pressure sensor drops significantly during high speed
driving, check the air cleaner for clogging.
INSPECTION
Using Scan Tool
Function Item No.
Data reading 25
HARNESS INSPECTION
A Harness side
MULTIPORT On-Vehicle Inspection of MFI
FUEL INJECTION - Components
Data display Check condition
Sensor Ignition switch: ON
pressure
Check for continuity of the ground
circuit.
Measure the power supply volt-
age of the barometric pressure
Engine control
Check for an open-circuit, or a
module har-
short-circuit to ground between
ness side
the engine control module and the
connector
barometric pressure sensor.
Volume air flow sensor con-
nector: Disconnected
Engine control module con-
l
nector: Disconnected
Altitude
At 0 m (0 ft.)
101 kPa (760 mmHg)
At 600 m (1,969 ft.) 95 kPa (710 mmHg)
At 1,200 m (3,937 ft.)
88 kPa (660 mmHg)
At 1,800 m (5,906 ft.) 81 kPa (610 mmHg)
OK
Standard value
Repair the
harness.
Repair the
harness.
(Al -61)
STOP
Repair the
harness.