2005 MITSUBISHI LANCER Workshop Manual

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

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

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-39
STEP 3. Connector check: Combination meter
connector C-04 and diagnosis connector C-11
Q: Is combination meter connector C-04 and
diagnosis connector C-11 in good condition?
YES :
Go to Step 4.
NO : Repair or replace the damage
component(s).
STEP 4. Check the wiring harness between
combination meter connector C-04 (terminal 12)
and diagnosis connector C-11 (terminal 14).
NOTE:
Prior to the wiring harness inspection, joint connector
C-03 , and repair if necessary.
Q: Is the wiring harness between combination meter
connector C-04 (terminal 12) and diagnosis
connector C-11 (terminal 14) in good condition?
YES :
Go to Step 5.
NO : Repair or replace the wiring harness.
AC303798
Connector: C-04

Harness side
AT
AC303800
C-11 (B) Connector: C-11

Front side
AH
AC303814
Connector: C-04

Harness side
AT
AC303812
AD
Connector: C-11

Front side
C-11 (B)
AC303798AU
Connector: C-03, C-04
C-04
C-03 (B)
C-04 C-03 Harness side
AC303800
C-11 (B) Connector: C-11

Front side
AH
AC303814
Connector: C-04

Harness side
AT
AC303812
AD
Connector: C-11

Front side
C-11 (B)

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

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

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 drive vehicles>, C-126
(terminal 43, 80).
AC303798AU
Connector: C-03, C-04
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

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

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-44
INSPECTION PROCEDURE 3: Tachometer does not work (the other meters work).
TECHNICAL DESCRIPTION (COMMENT)
Ignition signal may not be received from the
engine-ECU, or the combination meter assembly, the
wiring harness, or the connector(s) may be defective.
TROUBLESHOOTING HINTS
•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.
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 : Gray R : Red P : Pink V : Violet ENGINE-A/T-ECU
M/T
A/T
NOTELH drive vehicles
RH drive vehicles
COMBINATION
METER
CONTROL
CIRCUIT
Tachometer Circuit