MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-393
COMMENT
•
If the selector lever is moved to "P" or "N" range
and the ignition switch is turned to "START"
position, battery positive voltage is supplied to
PCM (terminal 58) through the ignition switch and
park/neutral position switch. Because of this, the
PCM detects that the engine is cranking.
•
The park/neutral position switch detects the
selector lever position (P, N or other ranges) and
converts it to a voltage signal (high or low). Then
the park/neutral position switch sends that signal
to the PCM.
If the selector lever is moved to "P" or "N" range
with the ignition switch turned on (except
"START" position), continuity will exist between
the PCM and ground through the park/neutral
position switch and starter motor. The terminal
voltage of the PCM will become low. If the
selector lever is moved to the other ranges,
continuity will be lost between the PCM and
ground. The terminal voltage of the PCM will
become high.
TROUBLESHOOTING HINTS (The most likely
caused for this code to be set are:)
•
Malfunction of the ignition switch.
•
Malfunction of the park/neutral position switch.
•
Improper connector contact, open circuit or short-
circuit in the harness wire.
•
Malfunction of the PCM.
AK000638AB
CONNECTOR:B-39
AK000566AB
CONNECTOR:C-17
AK000634 AB
CONNECTOR:C-58
AK000280
CONNECTOR : C-40
PCM
AV