MITSUBISHI LANCER 2005 Workshop Manual

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
<L.H. drive vehicles>
Harness side
AI
AC303819
Connectors: C-134, C-136, C-137
<R.H. drive vehicles>
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

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-45
DIAGNOSIS PROCEDURE
STEP 1. Check whether the diagnosis code is
reset.
Q: Is the MPI-related diagnosis code set?
Code No.P0500 <M/T> or 23 <A/T> is set :
Refer to
GROUP 13A − Troubleshooting P.13A-15,
GROUP 13B − Troubleshooting P.13B-15.
NO : Go to Step 2
STEP 2. Connector check: Combination meter
connector C-04 and engine-ECU connector C-127
<M/T> or engine-A/T-ECU connector C-124 <A/T>
Q: Is combination meter connector C-04 and
engine-ECU connector C-127 <M/T> or
engine-A/T-ECU connector C-124 <A/T> in good
condition?
YES :
Go to Step 3
NO : Repair or replace the damage
component(s).
STEP 3. Retest the system.
Q: Is the tachometer normal?
YES :
Intermittent Malfunction. Refer to GROUP
00, How to Use Troubleshooting/Inspection
Service Points-How to Cope with
Intermittent Malfunction P.00-5).
NO : Go to Step 4
AC303798
Connector: C-04
<L.H. drive vehicles>
Harness side
AT
AC303805
Connector: C-124 <A/T>, C-127 <M/T>
<L.H. drive vehicles>
C-124 (GR)
Harness side
C-124
C-127
AM
C-127 (Y)
Harness side
AC303814
Connector: C-04
<R.H. drive vehicles>
Harness side
AT
AC303817
Connector: C-124 <A/T>, C-127 <M/T>
<R.H. drive vehicles>
C-127 (Y)C-124 (GR)
C-124
C-127 Harness side
AO
Harness side

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-46
STEP 4. Check the wiring harness between
combination meter connector C-04 (terminal 11)
and engine-ECU connector C-127 (terminal 58)
<M/T> or engine-A/T-ECU connector C-124
(terminal 43) <A/T>.
AC303798
Connector: C-04
<L.H. drive vehicles>
Harness side
AT
AC303805
Connector: C-124 <A/T>, C-127 <M/T>
<L.H. drive vehicles>
C-124 (GR)
Harness side
C-124
C-127
AM
C-127 (Y)
Harness side
AC303814
Connector: C-04
<R.H. drive vehicles>
Harness side
AT
AC303817
Connector: C-124 <A/T>, C-127 <M/T>
<R.H. drive vehicles>
C-127 (Y)C-124 (GR)
C-124
C-127 Harness side
AO
Harness side

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-47
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-14 <LH drive vehicles>,
C-136 <RH drive vehicles>, joint connector C-12
<LH drive vehicles>, C134 <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 (terminal 58) <M/T> or
engine-A/T-ECU connector C-124 (terminal 43)
<A/T> in good condition?
YES :
Replace the combination meter assembly.
NO : Repair or replace the damage
component(s).
AC303801
Connector: C-12, C-14
<L.H. drive vehicles>
C-12C-14 (GR)
C-12
C-14 Harness side
AD
AC303819
Connector: C-134, C-136
<R.H. drive vehicles>
C-136 (GR)
C-134
C-134
C-136 Harness side
AD

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-48
INSPECTION PROCEDURE 4: Fuel gauge does not work (the other meters work).
TECHNICAL DESCRIPTION (COMMENT)
If only the fuel gauge does not operate, fuel gauge
unit the combination meter, wiring harness or
connector(s) may be defective.
TROUBLESHOOTING HINTS
•Malfunction of the fuel gauge unit.
•The wiring harness or connectors may have
loose, corroded, or damaged terminals, or
terminals pushed back in the connector.
•Malfunction of the combination meter.
COMBINATION
METER
CONTROL
CIRCUIT
FUEL
GAUGE
UNIT
LH drive vehicles SEDAN
LH drive vehicles WAGON NOTE
LH drive vehicles
RH drive vehicles
,,
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 : VioletFuel Gauge Circuit

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-49
DIAGNOSIS PROCEDURE
STEP 1. Check the fuel gauge circuit.
(1) Disconnect D-13 fuel gauge unit connector.
(2) Connect a test lamp (12 V − 3.4 W) via test
harness (MB991219) between the wiring harness
connector terminals 1 and 2.
(3) Turn the ignition switch to the "ON" position.
Q: Does the test lamp illuminate?
YES :
Go to Step 4.
NO : . Go to Step 2.
STEP 2. Connector check: Combination meter
connector C-06, fuel gauge unit connector D-13
Q: Is combination meter connector C-04, fuel gauge
unit connector D-13 in good condition?
YES :
Go to Step 3.
NO : Repair or replace the damaged
component(s).
STEP 3. Check the wiring harness between
combination meter connector C-06 (terminal 51)
and fuel gauge unit connector D-13 (terminal 1).
AC305320
AB
Test lamp
(12 V - 3.4 W)
MB991219
Harness side
Fuel gauge
Earth
AC303798
Connector: C-04
<L.H. drive vehicles>
Harness side
AT
AC303871
Connector: D-13
<Sedan>
Harness sideD-13 (B)
AI
AC303917
D-13 (B) Connector: D-13
<Wagon>
Harness side
AH
AC303798
Connector: C-06
<L.H. drive vehicles>
Harness side
C-06 (L)
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
AV
AC303814AU
Connector: C-06
<R.H. drive vehicles>
Harness side
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
C-06 (L)

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-50
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-22 <LH drive vehicles>,
C-120 <RH drive vehicles>, D-18, and repair if
necessary.
Q: Is the wiring harness between combination meter
connector C-06 (terminal 51) and fuel gauge unit
connector D-13 (terminal 1) in good condition?
YES :
Go to Step 4.
NO : Repair or replace the damaged
component(s). Then go to Step 4.
STEP 4. Retest the system.
Q: Is the fuel gauge 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 combination meter.
AC303871
Connector: D-13
<Sedan>
Harness sideD-13 (B)
AI
AC303917
D-13 (B) Connector: D-13
<Wagon>
Harness side
AH
AC303798
Harness side Connector C-22
<L.H. drive vehicles>
AW
AC303816AY
Connector: C-120
<R.H. drive vehicles>
Harness side
AC303871
Connector: D-18
<Sedan>
AJ
Harness side
AC303917
Connector: D-18
<Wagon>
Harness side
AG

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-51
INSPECTION PROCEDURE 5: Engine Coolant Temperature Gauge does not Work (the other meters
work).
TECHNICAL DESCRIPTION (COMMENT)
If only the engine coolant temperature gauge does
not operate, the combination meter, the wiring
harness or its connector may be defective.
TROUBLESHOOTING HINTS
•Malfunction of the engine coolant temperature
gauge unit
•The wiring harness or connectors may have
loose, corroded, or damaged terminals, or
terminals pushed back in the connector.
•Malfunction of the combination meter.
DIAGNOSIS PROCEDURE
STEP 1. Check the engine coolant temperature
gauge unit.
Check to see that the engine coolant temperature
gauge unit operate normally. Refer to P.54A-61.
Q: Is the engine coolant temperature gauge unit
normal?
YES :
Go to Step 2.
NO : Replace the fuel gauge unit. Then go to step
4.
COMBINATION
METER
CONTROL
CIRCUIT
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 COOLANT
TEMPERATURE
GAUGE UNIT
NOTELH drive vehicles
RH drive vehicles
Engine Coolant Temperature Gauge Circuit

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-52
STEP 2. Connector check: Combination meter
connector C-06 and engine coolant temperature
gauge unit connector B-112
Q: Is combination meter connector C-06 and engine
coolant temperature gauge unit connector B-112 in
good condition?
YES :
Go to Step 3.
NO : Repair or replace the damage
component(s).
STEP 3. Check the wiring harness between
combination meter connector C-06 (terminal 50)
and engine coolant temperature gauge unit
connector B-112 (terminal 1).
AC303784
Connector: B-112
<4G1-MPI>
Harness side
B-112 (B)
AF
AC303792
AE
Connector: B-112
<4G6-MPI>
B-112 (B) Harness side
AC303798
Connector: C-06
<L.H. drive vehicles>
Harness side
C-06 (L)
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
AV
AC303814AU
Connector: C-06
<R.H. drive vehicles>
Harness side
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
C-06 (L)
AC303784
Connector: B-112
<4G1-MPI>
Harness side
B-112 (B)
AF
AC303792
AE
Connector: B-112
<4G6-MPI>
B-112 (B) Harness side
AC303798
Connector: C-06
<L.H. drive vehicles>
Harness side
C-06 (L)
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
AV
AC303814AU
Connector: C-06
<R.H. drive vehicles>
Harness side
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
C-06 (L)