Mitsubishi Grandis. Manual — part 753
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-263
STEP 3. Perform resistance measurement at
C-102 accelerator pedal position sensor
connector.
• Disconnect connector, and measure at harness
side.
• Resistance between terminal No. 5 and earth.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Go to Step 4 .
STEP 4. Connector check: C-113 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair or replace.
AK305627
1
6 5 4 3 2
Connector: C-102
AB
C-102 (B)
Harness side
connector
C-102 (B)
<L.H. drive vehicles>
<R.H. drive vehicles>
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
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113
114
115
116
117
118
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120
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-264
STEP 5. Check harness between C-102 (terminal
No. 5) accelerator pedal position sensor
connector and C-113 (terminal No. 96)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
NOTE: Before checking harness, check intermediate
connector C-116, and repair if necessary.
• Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair.
STEP 6. MUT-III data list
• Refer to Data List Reference Table
a. Item 77: Accelerator pedal position sensor
(sub)
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
).
NO :
Replace engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
STEP 7. Replace the accelerator pedal assembly
• After replacing the accelerator pedal assembly,
re-check the trouble symptoms.
Q: Is the check result normal?
YES :
Check end.
NO :
Replace engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
AK305627
1
6 5 4 3 2
Connector: C-102
AB
C-102 (B)
Harness side
connector
C-102 (B)
<L.H. drive vehicles>
<R.H. drive vehicles>
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
91
92
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96
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102
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116
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119
120
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-265
Code No. P2135: Throttle Position Sensor (Main and Sub) Range/Performance Problem
OPERATION
• Refer to Code No. P0122: Throttle Position
Sensor (main) Circuit Low Input
.
• Refer to Code No. P0222: Throttle Position
Sensor (sub) Circuit Low Input
.
FUNCTION
• Engine-ECU <M/T> or engine-A/T-ECU <A/T>
checks the throttle position sensor output signal
characteristics for abnormal conditions.
TROUBLE JUDGMENT
Check Condition
• Ignition switch is in ON position.
• Throttle position sensor (main) output voltage is
0.35
− 2.5 V.
• Throttle position sensor (sub) output voltage is
2.25
− 4.8 V
Judgment Criterion
• Using the formula given below, the voltage of 0.3
V or higher is obtained for 0.5 second: V*
− V** −
2V
V*: throttle position sensor (main) output voltage
V**: throttle position sensor (sub) output voltage.
PROBABLE CAUSE
• Failed throttle position sensor
• Open/short circuit in throttle position sensor
circuit or loose connector contact
DIAGNOSIS PROCEDURE
STEP 1. Connector check: C-113 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector and B-06 electronic-controlled throttle
valve connector
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Repair or replace.
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
91
92
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96
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100
101
102
103
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108
109
110
111
112
113
114
115
116
117
118
119
120
Harness side connector
AK300972
1
6 5 4 3 2
AC
Harness side connector
Connectors: B-06
B-06 (B)
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI)
13A-266
STEP 2. Check harness between B-06 (terminal
No. 4) electronic-controlled throttle valve
connector and C-113 (terminal No. 115)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
• Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Repair.
STEP 3. Check harness between B-06 (terminal
No. 6) electronic-controlled throttle valve
connector and C-113 (terminal No. 113)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.
• Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair.
STEP 4. Replace throttle body assembly.
• After throttle body assembly is replaced, re-check
for trouble symptom.
Q: Does trouble system persist?
YES :
Replace engine-ECU <M/T> or
engine-A/T-ECU <A/T>.
NO :
Check end.
AK300972
1
6 5 4 3 2
AC
Harness side connector
Connectors: B-06
B-06 (B)
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
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111
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113
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119
120
Harness side connector
AK300972
1
6 5 4 3 2
AC
Harness side connector
Connectors: B-06
B-06 (B)
AK305616AB
Connector: C-113
<L.H. drive vehicles>
<R.H. drive vehicles>
C-113 (GR)
C-113 (GR)
91
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95
96
97
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Harness side connector
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