Mitsubishi Eclipse. Manual — part 290
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-653
STEP 13. Check for harness damage between idle air
control motor connector B-34 and ECM connector C-49
<M/T> or PCM connector C-50 <A/T>.
a. Idle air control motor connector B-34 (terminal No. 1) and
ECM connector C-49 (terminal No. 4) <M/T> or PCM con-
nector C-50 (terminal No. 14) <A/T>.
b. Idle air control motor connector B-34 (terminal No. 3) and
ECM connector C-49 (terminal No. 17) <M/T> or PCM con-
nector C-50 (terminal No. 28) <A/T>.
c. Idle air control motor connector B-34 (terminal No. 4) and
ECM connector C-49 (terminal No. 5) <M/T> or PCM con-
nector C-50 (terminal No. 15) <A/T>.
d. Idle air control motor connector B-34 (terminal No. 6) and
ECM connector C-49 (terminal No. 18) <M/T> or PCM con-
nector C-50 (terminal No. 29) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 14.
NO : Repair it. Then go to Step 14.
AK300408
1
2
3
4
5
6
CONNECTOR: B-34
AB
B-34 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300413
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
21
23
26
24
25
3
10
11
12
13
CONNECTOR: C-49 <M/T>
C-49 (G)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300414
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
30
21
22
23
24
25
26
27
28
29
31
32
33
34
35
1
10
C-50 (GR)
CONNECTOR: C-50 <A/T>
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-654
STEP 14. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Procedure 6 −
Other Monitor
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0507 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
DTC P0513: Immobilizer Malfunction
.
TECHNICAL DESCRIPTION
• ECM <M/T> or PCM <A/T> monitors the commu-
nication condition with the immobilizer-ECU and
the message from the immobilizer-ECU, and
when the abnormality is found, ECM <M/T> or
PCM <A/T> makes the engine not to start.
.
DTC SET CONDITIONS
Check Conditions
• Ignition switch: ON
Judgment Criteria
• When the communication error between ECM
<M/T> or PCM <A/T> and the immobilizer-ECU
continues for 2 seconds or more.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Malfunction of harness or connector.
• Malfunction of immobilizer-ECU.
• Malfunction of ECM <M/T> or PCM <A/T>.
DIAGNOSIS
Required Special Tools:
• MB991958 (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-655
STEP 1. Using scan tool MB991958, read the immobilizer
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) Read the immobilizer system-DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the immobilizer system-DTC is output?
YES : Refer to GROUP 54A, Ignition Switch and
Immobilizer System
− Diagnostic Trouble Code Chart
NO : If DTC P0513 is output again after the MFI-DTC has
been erased, replace the ECM <M/T> or PCM <A/T>.
Then check that the DTC P0513 does not reset.
DTC P0551: Power Steering Pressure Sensor Circuit Range/Performance
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
AK000670
34
33
32
36
35
37
42
45
31
39
38
46
40 41
1
43 44
YELL
O
W
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
C-53 <M/T>
(MU803771)
C-54 <A/T>
(MU803781)
37 <M/T>
52 <A/T>
POWER STEERING
PRESSURE SWITCH
B-19
1
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58 59
60 61 62 63
64 65 66
47
41
Power Steering Pressure Switch Circuit
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-656
.
CIRCUIT OPERATION
• A battery positive voltage is applied to the power
steering pressure switch output terminal (terminal
No. 1) from the ECM (terminal No. 37) or PCM
(terminal No. 52) <A/T> via the resistor in the
ECM <M/T> or PCM <A/T>.
.
TECHNICAL DESCRIPTION
• The power steering pressure switch converts the
existence of a power steering load into a high/low
voltage, and inputs it into the ECM <M/T> or PCM
<A/T>.
• When the steering wheel is turned, hydraulic
pressure rises. The power steering pressure
switch closes, and the applied battery positive
voltage will be grounded. With this, the power
steering pressure switch output voltage will fluc-
tuate between 12 volts and 0 volt.
• While driving with the steering wheel held
straight, the power steering pressure switch turns
"OFF".
• The ECM <M/T> or PCM <A/T> checks whether
the power steering pressure switch turns "OFF"
or "ON" during driving.
.
DESCRIPTIONS OF MONITOR METHODS
Power steering pressure switch stays on during
specified go/stop operations.
.
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)
• Engine coolant temperature sensor
.
AK300104
B-19
POWER
STEERING
PRESSURE
SWITCH
AB
CONNECTOR: B-19
AK300060
ECM
CONNECTOR: C-53 <M/T>
AH
C-53 (G)
AK300060AB
C-54 (GR)
PCM
CONNECTOR: C-54 <A/T>
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