ECU MITSUBISHI LANCER 2005 Manual PDF
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 2005, Model line: LANCER, Model: MITSUBISHI LANCER 2005Pages: 788, PDF Size: 45.98 MB
Page 420 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-32
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Speedometer does not work (the other meters work).
Speedometer Circuit
IGNITION
SWITCH (IG1)
VEHICLE
SPEED
SENSORDIAGNOSIS
CONNECTORCOMBINATION
METER
ENGINE-ECU
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet CONTROL CIRCUIT
FRONT SIDE
NOTE
LH drive vehicles
RH drive vehicles
,
Page 421 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-33
TECHNICAL DESCRIPTION (COMMENT)
The engine-ECU and its associated components, the
combination meter assembly, the wiring harness, or
the connector(s) may be defective.
TROUBLESHOOTING HINTS
•Malfunction of the vehicle speed sensor
•Malfunction of the engine-ECU
•Malfunction of the combination meter assembly
•The wiring harness or connectors may have
loose, corroded, or damaged terminals, or
terminals pushed back in the connector.
DIAGNOSIS PROCEDURE
STEP 1. MUT-II/III actuator test.
(1) Connect the MUT-II/III to the diagnosis connector.(2) Use the MUT-II/III to enter simulated vehicle
speed.
Q: Does the speedometer show that simulated vehicle
speed?
YES :
Go to Step 6.
NO : Go to Step 2.
STEP 2. Check the vehicle speed sensor.
(MUT-II/III diagnosis code)
(1) Connect MUT-II/III to the diagnosis connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the MPI system diagnosis code.
Q: Is MPI system diagnosis code P0500 set?
YES :
Refer to P.13A-186 <4G1> or P.13B-166
<4G6>.
NO : Go to Step 3.
AC304777
Steering shaft
AB
MB991502
AC304950
MB991911
16-PIN
MB991827 MB991824
AB
AC304777
Steering shaft
AB
MB991502
AC304950
MB991911
16-PIN
MB991827 MB991824
AB
Page 423 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-35
STEP 5. Retest the system
Q: Is the speedometer normal?
YES : .
The procedure is complete. (If no
malfunctions are found in all steps, an
intermittent malfunction is suspected. Refer
to GROUP 00, How to Use
Troubleshooting/Inspection Service
Points-How to Cope with Intermittent
Malfunction P.00-5).
NO : . Replace the combination meter assembly.
STEP 6. Check whether the diagnosis code is
reset.
Q: Is the MPI-related diagnosis code set?
YES :
Refer to GROUP 13A − Troubleshooting
P.13A-15, GROUP 13B − Troubleshooting
P.13B-15.
NO : . Go to Step 7.
STEP 7. Connector check: Combination meter
connector C-04 and engine-ECU connector C-127
Q: Is combination meter connector C-04 and
engine-ECU connector C-127 in good condition?
YES : .
Go to Step 8.
NO : . Repair or replace the damage
component(s).
STEP 8. Check the wiring harness between
combination meter connector C-04 (terminal 11)
and engine-ECU connector C-125
58).
AC303798
Connector: C-04
Harness side
AT
AC303814
Connector: C-04
Harness side
AT
AC303816BA
Connector: C-127
C-127 (Y)
Harness side
AC303798
Connector: C-04
Harness side
AT
AC303804
Connector: C-125
C-125 (Y)
Harness side
51 52 53 54 55 56 57 58
66 65 64 63 62 61 60 59
AT
Page 424 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-36
NOTE:
Prior to the wiring harness inspection, check
intermediate connectors C-14 (LH drive vehicles),
C-136 (RH drive vehicles), joint connectors C-12 (LH
drive vehicles), C-134 (RH drive vehicles) and repair
if necessary.
Q: Is the wiring harness between combination meter
connector C-04 (terminal 11) and engine-ECU
connector C-127
in good condition?
YES :
Go to Step 9.
NO : Repair the wiring harness.
STEP 9. Retest the system.
Q: Is the speedometer normal?
YES :
The procedure is complete. If no
malfunctions are found in all steps, an
intermittent malfunction is suspected (Refer
to GROUP 00, How to Use
Troubleshooting/Inspection Service
Points-How to Cope with Intermittent
Malfunction P.00-5).
NO : Go to Step 10.
STEP 10. Pulse check
Use the MUT-II/III or a voltmeter to check that the
vehicle speed signal is received.
OK: The MUT-II/III sounds or the voltmeter
needle fluctuates.
Q: Is the check result normal?
YES :
Replace the combination meter assembly.
NO : Replace the engine-ECU.
AC303814
Connector: C-04
Harness side
AT
AC303816AW
Connector: C-127
C-127 (Y)
Harness side
585261556256605459535751
AC303801
Connector: C-12, C-14
C-12C-14 (GR)
C-12
C-14 Harness side
AD
System switch Check conditions
Vehicle speed signal When the vehicle speed
has reached 10 km/h or
more
Page 425 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-37
INSPECTION PROCEDURE 2: Speedometer does not work (the other meters work).
IGNITION
SWITCH (IG1)
A/T
CONTROL
RELAY
OUTPUT
SHAFT
SPEED
SENSOR
DIAGNOSIS
CONNECOTR
ENGINE-
A/T-ECUCOMBINATION METER
ENGINE-
A/T-ECU
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
FRONT SIDE
NOTE
LH drive vehicles
RH drive vehicles
CONTROL CIRCUIT
Speedometer Circuit
Page 426 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-38
TECHNICAL DESCRIPTION (COMMENT)
The engine-ECU and its associated components, the
combination meter assembly, the wiring harness, or
the connector(s) may be defective.
TROUBLESHOOTING HINTS
•Malfunction of the vehicle speed sensor
•Malfunction of the engine-ECU
•Malfunction of the combination meter assembly
•The wiring harness or connectors may have
loose, corroded, or damaged terminals, or
terminals pushed back in the connector.
DIAGNOSIS PROCEDURE
STEP 1. MUT-II/III actuator test
(1) Connect the MUT-II/III to the diagnosis connector.(2) Use the MUT-II/III to enter simulated vehicle
speed.
Q: Does the speedometer show that simulated vehicle
speed?
YES :
Go to Step 6.
NO : Go to Step 2.
STEP 2. Check the output shaft speed sensor.
(MUT-II/III diagnosis code)
(1) Connect MUT-II/III to the diagnosis connector.
(2) Turn the ignition switch to the "ON" position.
(3) Read the automatic transmission system
diagnosis code.
Q: Is automatic transmission system diagnosis code
23 set?
YES :
Refer to P.23A-38.
NO : Go to Step 3.
AC304777
Steering shaft
AB
MB991502
AC304950
MB991911
16-PIN
MB991827 MB991824
AB
AC304777
Steering shaft
AB
MB991502
AC304950
MB991911
16-PIN
MB991827 MB991824
AB
Page 428 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-40
STEP 5. Retest the system.
Q: Is the speedometer normal?
YES :
The procedure is complete. (If no
malfunctions are found in all steps, an
intermittent malfunction is suspected. Refer
to GROUP 00, How to Use
Troubleshooting/Inspection Service
Points-How to Cope with Intermittent
Malfunction P.00-5).
NO : Replace the combination meter assembly.
STEP 6. Check whether the diagnosis code is
reset.
Q: Is the MPI-related diagnosis code set?
YES : .
Refer to GROUP 13A − Troubleshooting
P.13A-15, GROUP 13B − Troubleshooting
P.13B-15.
NO : . Go to Step 7.
STEP 7. Connector check: Combination meter
connector C-04 and engine-A/T-ECU connector
C-124, C-126
AC303798
Connector: C-04
Harness side
AT
AC303805
Connector: C-124, C-126
C-124 (GR)C-126 (GR)
C-124
C-126 Harness side
41 42 43 44 45
57 56 55 54 53 52 51 50 49 48 47
58 59 60 61 62 63 64 65 6646
71 72 73 74 75 76 77
89 88 87 86 85 84 83 82 81 80 79 78
90 91 92 93 94 95 96 97 98
AK
Page 429 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-41
Q: Is combination meter connector C-04 and
engine-A/T-ECU connector C-124, C-126 in good
condition?YES :
Go to Step 8.
NO : Repair or replace the damage
component(s).
AC303814
Connector: C-04
Harness side
AT
AC303817
Connector: C-124, C-126
C-124
C-126
C-126 (GR)
C-124 (GR)
Harness side
41 42 43 44 45
57 56 55 54 53 52 51 50 49 48 47
58 59 60 61 62 63 64 65 6646
71 72 73 74 75 76 77
89 88 87 86 85 84 83 82 81 80 79 78
90 91 92 93 94 95 96 97 98
AM
Page 430 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-42
STEP 8. Check the wiring harness between
combination meter connector C-04 (terminal 11,
12) and engine-A/T-ECU connector C-124
(terminal 43, 80).
AC303798AU
Connector: C-03, C-04
C-03 (B)
C-04 C-03 Harness side
AC303805
Connector: C-124, C-126
C-124 (GR)C-126 (GR)
C-124
C-126 Harness side
41 42 43 44 45
57 56 55 54 53 52 51 50 49 48 47
58 59 60 61 62 63 64 65 6646
71 72 73 74 75 76 77
89 88 87 86 85 84 83 82 81 80 79 78
90 91 92 93 94 95 96 97 98
AK
AC303814
Connector: C-04
Harness side
AT
AC303817
Connector: C-124, C-126
C-124
C-126
C-126 (GR)
C-124 (GR)
Harness side
41 42 43 44 45
57 56 55 54 53 52 51 50 49 48 47
58 59 60 61 62 63 64 65 6646
71 72 73 74 75 76 77
89 88 87 86 85 84 83 82 81 80 79 78
90 91 92 93 94 95 96 97 98
AM
Page 431 of 788
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-43
NOTE:
Prior to the wiring harness inspection, check
intermediate connectors C-14 (LH drive vehicles),
C-13 (LH drive vehicles), C-136 (RH drive vehicles),
C-137 (RH drive vehicles), joint connectors C-12 (LH
drive vehicles), C-134 (RH drive vehicles), C-03 (LH
drive vehicles) and repair if necessary.Q: Is the wiring harness between combination meter
connector C-04 (terminal 11, 12) and
engine-A/T-ECU connector C-124 (terminal 43, 80)
in good condition?
YES :
Go to Step 9.
NO : Repair the wiring harness.
STEP 9. Retest the system.
Q: Is the speedometer normal?
YES :
The procedure is complete. (If no
malfunctions are found in all steps, an
intermittent malfunction is suspected. Refer
to GROUP 00, How to Use
Troubleshooting/Inspection Service
Points-How to Cope with Intermittent
Malfunction P.00-5).
NO : Go to Step 10.
STEP 10. Pulse check
Use the MUT-II/III or a voltmeter to check that the
vehicle speed signal is received.
OK: The MUT-II/III sounds or the voltmeter
needle fluctuates.
Q: Is the check result normal?
YES :
Replace the combination meter assembly.
NO : Replace the engine-ECU.
AC303800
Connector: C-12
Harness side
AI
AC303819
Connectors: C-134, C-136, C-137
C-134
AE
C-134
C-136C-137
C-136 (GR)
C-137
System switch Check conditions
Vehicle speed signal When the vehicle speed
has reached 10 km/h or
more