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Mitsubishi Grandis. Manual - part 738

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-203

STEP 14. Connector check: C-112 engine-ECU
<M/T> connector or engine-A/T-ECU <A/T>
connector

Q: Is the check result normal?

YES :

Go to Step 15 .

NO :

Repair or replace.

AK305617

Connector: C-112

C-112 (GR)

Harness side connector

<R.H. drive vehicles>

<L.H. drive vehicles>

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-204

STEP 15. Check harness between B-20 (terminal
No. 2) (terminal No. 1) power steering fluid
pressure sensor connector and C-112 (terminal
No. 84) engine-ECU <M/T> connector or
engine-A/T-ECU <A/T> connector.

NOTE: Before checking harness, check intermediate
connector B-17 (R. H. drive vehicles), and repair if
necessary.

• Check output line for open/short circuit and

damage.

Q: Is the check result normal?

YES :

Go to Step 16 .

NO :

Repair.

AK305622

Connector: B-20

B-20 (B)

Harness side
connector

<L.H. drive vehicles>

<R.H. drive vehicles>

AK305617

Connector: C-112

C-112 (GR)

Harness side connector

<R.H. drive vehicles>

<L.H. drive vehicles>

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-205

STEP 16. Check harness between B-20 (terminal
No. 3) power steering fluid pressure sensor
connector and C-113 (terminal No. 97)
engine-ECU <M/T> connector or engine-A/T-ECU
<A/T> connector.

NOTE: Before checking harness, check intermediate
connector B-17, and repair if necessary (R. H. drive
vehicles).

• Check power supply line for damage.

Q: Is the check result normal?

YES :

Replace power steering pressure sensor.

NO :

Repair.

STEP 17. Connector check: C-112 engine-ECU
<M/T> connectors or engine-A/T-ECU <A/T>
connector

Q: Is the check result normal?

YES :

Go to Step 9 .

NO :

Repair or replace.

AK305622

Connector: B-20

B-20 (B)

Harness side
connector

<L.H. drive vehicles>

<R.H. drive vehicles>

AK305616AB

Connector: C-113

<L.H. drive vehicles>

<R.H. drive vehicles>

C-113 (GR)

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

Harness side connector

AK305617

Connector: C-112

C-112 (GR)

Harness side connector

<R.H. drive vehicles>

<L.H. drive vehicles>

TROUBLESHOOTING

MULTIPORT FUEL INJECTION (MPI)

13A-206

Code No. P0603: EEP ROM MALFUNCTION

FUNCTION

• To check whether the information such as the idle

learned value and so on is stored in the memory
of engine-ECU <M/T> or engine-A/T-ECU <A/T>.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is in ON position

Judgement Criterion

• The latest learned data that was flashed while the

ignition switch was in OFF position are not stored
correctly

PROBABLE CAUSE

• Failed the engine-ECU <M/T>

• Failed the engine-A/T-ECU <A/T>

DIAGNOSIS

STEP 1. Reconfirmation of diagnosis codes.

Q: Is the check result normal?

YES :

Replace engine-ECU <M/T> or

engine-A/T-ECU <A/T>.

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

Code No. P0606: Engine-ECU <M/T> or Engine-A/T-ECU <A/T> Main Processor Malfunction

FUNCTION

• System LSI checks the engine-ECU <M/T> or

engine-A/T-ECU <A/T> for abnormal conditions.

TROUBLE JUDGMENT

Check Conditions

• Ignition switch is ON position.

Judgement Criteria

• No surveillance pulse signals is input for 0.5

second.

PROBABLE CAUSE

• Failed the engine-ECU <M/T>

• Failed the engine-A/T-ECU <A/T>

DIAGNOSIS

STEP 1. Check the trouble symptoms.

Q: Does trouble symptom persist?

YES :

Replace engine-ECU <M/T> or

engine-A/T-ECU <A/T>.

NO :

Intermittent malfunction (Refer to GROUP
00

− How to Use

Troubleshooting/Inspection Service Points

P.00-5

Content .. 736 737 738 739 ..