Mitsubishi Eclipse. Manual — part 572
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-831
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Power steering pressure switch failed.
• Incorrect power steering fuid level.
• Incorrect oil pump pressure.
• Harness damage in power steering pressure
switch circuit, or connector damage.
• ECM failed. <M/T>
• PCM failed. <A/T>
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
STEP 1. Using scan tool MB991958, check data list item 27:
Power Steering Pressure Switch.
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) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item
27, Power Steering Pressure Switch.
• If the steering wheel is stopped while idling, "OFF" will
be displayed.
• If the steering wheel is steered while idling, "ON" will be
displayed.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points
NO : Go to Step 2.
STEP 2. Check the power steering fluid level.
Refer to GROUP 37A, On-Vehicle Service - Fluid Level Check
.
Q: Are there any abnormalities?
YES : Repair it. Then go to Step 7.
NO : Go to Step 3.
STEP 3. Check the power steering pressure switch.
Refer to GROUP 37A, On-Vehicle Service - Power Steering
Pressure Switch Check
Q: Are there any abnormalities?
YES : Replace the power steering pressure switch. Then go
to Step 7.
NO : Go to Step 4.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-832
STEP 4. Check the oil pump pressure .
Refer to GROUP 37A, On-Vehicle Service - Oil Pump Pressure
Test
Q: Are there any abnormalities?
YES : Repair it. Then go to Step 7.
NO : Go to Step 5.
STEP 5. Check harness connector B-19 at the power
steering pressure switch and harness connector C-58 at
ECM <M/T> or C-55 at PCM <A/T> for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 7.
AK300437
1
CONNECTOR: B-19
AB
B-19
HARNESS CONNECTOR:
COMPONENT SIDE
AK300748
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
CONNECTOR: C-58 <M/T>
AB
C-58 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300462
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
CONNECTOR: C-55 <A/T>
C-55 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-833
STEP 6. Check for harness damage between power
steering pressure switch connector B-19 (terminal No. 1)
and ECM connector C-58 (terminal No. 54) <M/T> or PCM
connector C-55 (terminal No. 52) <A/T>.
AK300437
1
CONNECTOR: B-19
AB
B-19
HARNESS CONNECTOR:
COMPONENT SIDE
AK300748
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
CONNECTOR: C-58 <M/T>
AB
C-58 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300462
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
CONNECTOR: C-55 <A/T>
C-55 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-834
NOTE: Check harness after checking intermediate connector
B-47. If intermediate connector is damaged, repair or replace
them. Refer to GROUP 00E, Harness Connector Inspection
. Then go to Step 7.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 7.
NO : Repair it. Then go to Step 7.
STEP 7. Using scan tool MB991958, check data list item 27:
Power Steering Pressure Switch.
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) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item
27, Power Steering Pressure Switch.
• If the steering wheel is not turned while idling, "OFF" will
be displayed.
• If the steering wheel is turned while idling, "ON" will be
displayed.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
YES : The procedure is complete.
NO : Repeat the troubleshooting.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
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