Mitsubishi Galant 9G. Manual — part 869
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-918
STEP 9. Check for harness damage between accelerator
pedal position sensor connector C-24 (terminal No. 6) and
PCM connector B-20 (terminal No. 27)
Q: Is the harness wire in good condition?
YES : Go to Step 10.
NO : Repair it. Then go to Step 11.
STEP 10. Replace the accelerator pedal position sensor.
(1) Replace the accelerator pedal position sensor.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P2127 set?
YES : Replace the PCM. Then go to Step 11.
NO : The inspection is complete.
AK303906
1
6 5 4 3 2
AB
C-24 (B)
CONNECTOR: C-24
HARNESS CONNECTOR:
COMPONENT SIDE
AK303092
25
21
24 23 22
29 28 27 26
34 33 32 31 30
38 37 36 35
43 42 41 40 39
CONNECTOR: B-20
B-20
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
AK303906
1
6 5 4 3 2
AB
C-24 (B)
CONNECTOR: C-24
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-919
STEP 11. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is DTC P2127 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK303804AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-920
DTC P2128: Accelerator Pedal Position Sensor (sub) Circuit High Input
CAUTION
If DTC P2128 has been set, TCL related DTC
U1120 is also set. After P2128 has been diag-
nosed, don't forget to erase DTC U1120.
.
22
21
23 24 25
26 27 28 29
30 31 32 33 34
35 36 37 38
39 40 41 42 43
6
1 2 3 4 5
AK303908
YELLO
W
-RED
PINK-GREEN
BR
O
W
N
C-24
5 V
21
4
ACCELERATOR PEDAL
POSITION SENSOR
(SUB)
POWERTRAIN CONTROL
MODULE (PCM)
27
22
6
5
Accelerator Pedal Position Sensor (sub) Circuit
B-20
HALL IC
AC305244
AK303904AB
ACCELERATOR
PEDAL POSITION
SENSOR
CONNECTOR: C-24
C-24 (B)
AK303085
CONNECTOR: B-20
PCM
AB
AIR CLEANER
B-20
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-921
CIRCUIT OPERATION
• A 5-volt power supply is applied on the accelera-
tor pedal position sensor (sub) power terminal
(terminal No. 4) from the PCM (terminal No. 21).
The ground terminal (terminal No. 5) is grounded
with PCM (terminal No. 22).
.
TECHNICAL DESCRIPTION
• The accelerator pedal position sensor (sub) out-
puts voltage which corresponds to the accelera-
tor pedal depression.
• The PCM checks whether the voltage is within a
specified range.
.
DESCRIPTIONS OF MONITOR METHODS
Accelerator pedal position sensor (sub) output volt-
age is out of specified range.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS
(Other monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
DTC SET CONDITIONS
Logic Flow Chart
.
AK303907
START
END
NO
NO
YES
YES
YES
NO
MALFUNCTION
GOOD
CONTINUOUS
FAILURE FOR 0.3sec
OUTPUT VOLTAGE > =4.8V
MONITORING
CONDITIONS
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