Mitsubishi Eclipse. Manual — part 201
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-297
• At least 20 seconds have passed since fuel shut
off control was canceled.
• Monitoring time: 10 seconds.
Judgement Criteria
• Making the air/fuel ratio 15 percent for 10 sec-
onds richer does not result in raising the heated
oxygen sensor (rear) output voltage beyond 0.15
volt.
.
OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-ll Drive Cycle −
Procedure 6
.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Heated oxygen sensor (rear) failed.
• Short circuit in heated oxygen sensor (rear) out-
put line.
• Connector damage.
• ECM failed. <M/T>
• PCM failed. <A/T>
DIAGNOSIS
Required Special Tools:
• MB991958 (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
• MB991658: Test Harness
STEP 1. Using scan tool MB991958, check data list item 59:
Heated Oxygen Sensor (rear).
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
59, Heated Oxygen Sensor (rear).
• Warming up the engine. When the engine is revved, the
output voltage should repeat 0 volt and 0.6 to 1.0 volt
alternately.
(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.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-298
STEP 2. Check the heated oxygen sensor (rear).
(1) Disconnect the heated oxygen sensor (rear) connector
C-23 and connect test harness special tool, MB991658, to
the connector on the heated oxygen sensor (front) side.
(2) Warm-up the engine until engine coolant 80
°C (176°F) or
higher.
CAUTION
Be very careful when connecting the jumper wires; incor-
rect connection can damage the right bank heated oxygen
sensor (rear).
(3) Use the jumper wires to connect terminal No. 5 to the
positive battery terminal and terminal No. 6 to the negative
battery terminal.
(4) Connect a digital volt meter between terminal No. 3 and
terminal No. 4.
(5) While repeatedly revving the engine, measure the heated
oxygen sensor (rear) output voltage.
Standard value: 0.6
− 1.0 volt
Q: Is the voltage between 0.6 and 1.0 volt?
YES : Go to Step 3.
NO : Replace the heated oxygen sensor (rear). Then go to
Step 5.
AK300405
2
1
6 5 4 3
AB
C-23
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: C-23
HARNESS
CONNECTOR:
HARNESS SIDE
AK000122
JUMPER
WIRES
MB991658
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-299
STEP 3. Check connector C-23 at heated oxygen sensor
(rear) and connector C-60 at ECM <M/T> or connector C-57
at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 5.
AK300405
2
1
6 5 4 3
AB
C-23
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: C-23
HARNESS
CONNECTOR:
HARNESS SIDE
AK300415
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
CONNECTOR: C-60 <M/T>
AB
C-60 (G)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-300
STEP 4. Check for short circuit to ground between heated
oxygen sensor (rear) connector C-23 (terminal No. 1) and
ECM connector C-60 (terminal No. 75) <M/T> or PCM
connector C-57 (terminal No. 73) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 5.
NO : Repair it. Then go to Step 5.
AK300735
98
78
71
88
89
76
77
72
79
91
73
80
74
75
81
92
82
83
93
84
85
94
86
87
95
96
90
97
CONNECTOR: C-57 <A/T>
C-57 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300405
2
1
6 5 4 3
AB
C-23
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: C-23
HARNESS
CONNECTOR:
HARNESS SIDE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст