Mitsubishi Colt Ralliart. Manual — part 749
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-321
STEP 7. Check harness between B-104 (terminal
No. 2) A/C compressor relay connector and A-08
(terminal No. 110) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector B-110 and repair if necessary.
• Check signal line for damage.
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair.
STEP 8. Connector check: A-130 A/C compressor
connector
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Repair or replace.
3
2
1
4
AK402116
J/B side
connector
Connector: B-104
J/B (front side)
B-104
AC
AK402725
77
78
79
80
81
82
83
84
92
93
94
95
96
97
98
99
85
86
87
88
89
90
91
100
101
102
103
104
105
106
115
116
117
118
119
120
121
107
108
109
110
111
112
113
114
130
131
132
133
134
135
136
122
123
124
125
126
127
128
129
72 71
74 73
76 75
R
AI
A-08
Connector:
A-08
A-08 Special tool power plant ECU check
harness
Engine-ECU
Battery
AK402117
1
A-130(B)
Connector: A-130
Harness side
connector
AC
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-322
STEP 9. Check harness between B-104 (terminal
No. 4) A/C compressor relay connector and
A-130 (terminal No. 1) A/C compressor
connector.
NOTE: Before checking harness, check intermediate
connector B-112, A-17, and repair if necessary.
• Check power supply line for open/short circuit or
damage.
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair.
STEP 10. Confirm that A/C compressor is driven
•
Disconnect A-08 engine-ECU connector, and termi-
nal No. 110 is earth short-circuited.
OK: A/C compressor is driven
Q: Is the check result normal?
YES :
Replace engine-ECU.
NO :
Replace A/C compressor.
3
2
1
4
AK402116
J/B side
connector
Connector: B-104
J/B (front side)
B-104
AC
AK402117
1
A-130(B)
Connector: A-130
Harness side
connector
AC
AK402725
77
78
79
80
81
82
83
84
92
93
94
95
96
97
98
99
85
86
87
88
89
90
91
100
101
102
103
104
105
106
115
116
117
118
119
120
121
107
108
109
110
111
112
113
114
130
131
132
133
134
135
136
122
123
124
125
126
127
128
129
72 71
74 73
76 75
R
AI
A-08
Connector:
A-08
A-08 Special tool power plant ECU check
harness
Engine-ECU
Battery
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-323
Inspection Procedure 25: Stop Lamp Switch System
OPERATION
• The battery voltage is applied to the stop lamp
switch (terminal No. 2).
• The stop lamp switch output terminal (terminal
No. 1) inputs the switch signal to the engine-ECU
(terminal No. 128).
FUNCTION
• The system checks whether the vehicle has the
illuminating stop lamp or not, and inputs the sig-
nal to the engine-ECU. The engine-ECU knows
the vehicle state through the stop lamp switch
signal and carries out control of each system.
PROBABLE CAUSES
• Failed stop lamp switch
• Open/short circuit in stop lamp switch circuit or
loose connector contact
• Failed engine-ECU
AK600592
R
92 93 94 95969798
77 78 79 808182838485868788899091
99
100
107 108 109 110 111112113114115116117118119120121
122 123 124 125126127128129130131132133134135136
101102103104105106
71 72
73 74
75 76
3
2
1
6
5
4
B-59
A-08
3
128
B-108
B-112
Stop Lamp Switch Circuit
4
22
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Gray
R: Red P: Pink V: Violet P: Purple
1
1
R
BR
L-O
Fusible link
42
15A
J/B
Stop lamp switch
Engine-ECU
AB
OFF
ON
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4G1>
13B-324
DIAGNOSIS PROCEDURE
STEP 1. Check for height of brake pedal.
• Check for height of brake pedal (Refer to GROUP
35A
− On-vehicle Service − Brake Pedal Check
And Adjustment
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Adjust.
STEP 2. Connector check: B-59 stop lamp switch
connector
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair or replace.
STEP 3. Check stop lamp switch.
• Check stop lamp switch (Refer to GROUP 35A −
On-vehicle Service
− Brake Pedal Check And
Adjustment
).
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Replace stop lamp switch.
STEP 4. Perform voltage measurement at B-59
stop lamp switch connector.
• Disconnect connector and measure at harness
side.
• Voltage between terminal No. 4 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Check intermediate connector B-112, B-108,
and repair if necessary. If intermediate
connectors are normal, check and repair
harness between B-59 (terminal No. 4) stop
lamp switch connector and battery.
• Check power supply line for
open/short circuit.
AK600593
1
2
3
4
5
6
AB
Connector: B-59
Harness side
connector
B-59
AK600593
1
2
3
4
5
6
AB
Connector: B-59
Harness side
connector
B-59
Main
Index
Group
TOC
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