Mitsubishi Eclipse. Manual — part 412
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-191
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• 2 seconds or more have passed since the start-
ing sequence was completed.
• Engine speed is lower than 1,000 r/min.
• Volumetric efficiency is lower than 60 percent.
Judgement Criteria
• TPS output voltage has continued to be 2 volts or
higher for 2 seconds.
.
OBD-ll DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• TPS failed or maladjusted.
• Open or shorted TPS circuit harness damage, 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
START
END
NO
NO
YES
YES
MALFUNCTION
GOOD
CONTINUOUS
FAILURE FOR 2 secs
OUTPUT VOLTAGE
> 2.0V
NO
YES
MONITORING
CONDITIONS
AK301430
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-192
STEP 1. Using scan tool MB991958, check data list item 14:
Throttle Position Sensor.
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) Set scan tool MB991958 to the data reading mode for item
14, Throttle Position Sensor.
• With the throttle valve in the idle position, voltage should
be between 0.535 and 0.735 volt.
• With the throttle valve in the full-open position, voltage
should be between 4.5 and 5.5 volts.
(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 connector B-07 at throttle position sensor
for damage.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 8.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
AK300434
2 1
3
4
CONNECTOR: B-07
AB
B-07 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-193
STEP 3. Check the continuity at throttle position sensor
harness side connector B-07.
(1) Disconnect the connector B-07 and measure at the harness
side.
(2) Measure the continuity between terminal No. 1 and ground.
• Should be less than 2 ohms.
Q: Is the continuity normal?
YES : Go to Step 6.
NO : Go to Step 4.
AK300434
2 1
3
4
CONNECTOR: B-07
AB
B-07 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AK000237AF
B-07 HERNESS
CONNECTOR:
COMPONENT SIDE
4 3 2 1
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-194
STEP 4. Check connector C-58 at ECM <M/T> or connector
C-55 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 8.
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
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
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