Mitsubishi Galant (2004+). Manual — part 1021
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-901
Logic Flow Chart
Check Conditions
• Ignition switch is "ON" position.
• Throttle position sensor (main) output voltage is
between 2.5 and 4.8 volts.
• Throttle position sensor (sub) output voltage is
higher than 2.25 volts.
Judgement Criteria
• Throttle position sensor (sub) output voltage is
4.2 volts or lower.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle −
Procedure 6
.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Throttle position sensor failed.
• Shorted throttle position sensor circuit or connec-
tor damage.
• PCM failed.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
START
END
NO
NO
NO
YES
YES
YES
MALFUNCTION
GOOD
CONTINUOUS
FAILURE FOR 0.5sec
TPS (SUB) < =4.2V
MONITORING
CONDITIONS
AK302048
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-902
STEP 1. Check harness connector B-06 at throttle position
sensor and harness connector B-22 at PCM for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 2.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 5.
AK303818
1
6 5 4 3 2
AB
CONNECTOR: B-06
B-06 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-903
STEP 2. Check for short circuit to ground between throttle
position sensor connector B-06 (terminal No. 4) and PCM
connector B-22 (terminal No. 99).
Q: Is the harness wire in good condition?
YES : Go to Step 3.
NO : Repair it. Then go to Step 5.
AK303818
1
6 5 4 3 2
AB
CONNECTOR: B-06
B-06 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-904
STEP 3. Check for short circuit to ground between throttle
position sensor connector B-06 (terminal No. 6) and PCM
connector B-22 (terminal No. 98).
Q: Is the harness wire in good condition?
YES : Go to Step 4.
NO : Repair it. Then go to Step 5.
STEP 4. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(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 P2135 set?
YES : Replace the PCM. Then go to Step 5.
NO : The procedure is complete.
AK303818
1
6 5 4 3 2
AB
CONNECTOR: B-06
B-06 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
AK303818
1
6 5 4 3 2
AB
CONNECTOR: B-06
B-06 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
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