Mitsubishi Montero (2004+). Manual - part 326
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-791
DTC SET CONDITIONS <Range/Performance problem
− relation between main and sub>
Logic Flow Chart
.
Check Condition
• Ignition switch "ON" position.
• Accelerator pedal position sensor (main) output
voltage is between 0.2 and 4.5 volts.
• Accelerator pedal position sensor (sub) output
voltage is between 0.2 and 4.5 volts.
• Change of accelerator pedal position sensor
(sub) output voltage per 25 miliseconds is lower
than 0.06 volt.
Judgement Criteria
• Voltage obtained with the formula given below is
1.0 volt or higher for 0.2 second: [accelerator
pedal position sensor (main) output voltage
−
accelerator pedal position sensor (sub) output
voltage +0.3 volt].
.
OBD-II DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• APS failed.
• Harness damage, or connector damage in APS
circuit.
• PCM failed.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
START
END
NO
NO
YES
YES
YES
NO
MALFUNCTION
GOOD
CONTINUOUS
FAILURE FOR 0.2secs
MONITORING
CONDITIONS
AK302967
APS (MAIN) -
{APS (SUB) +0.3V}
> =1.0V