2005 MITSUBISHI LANCER 54a

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-50
NOTE: Prior to the wiring harness inspection, check
intermediate connector C-22 ,
C-120 , 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

Harness sideD-13 (B)
AI
AC303917
D-13 (B) Connector: D-13

Harness side
AH
AC303798
Harness side Connector C-22

AW
AC303816AY
Connector: C-120

Harness side
AC303871
Connector: D-18

AJ
Harness side
AC303917
Connector: D-18

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

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

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

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

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-53
NOTE:
Prior to the wiring harness inspection, check
intermediate connectors C-13 ,
C-137 , and repair if necessary.Q: Is the wiring harness between combination meter
connector C-06 (terminal 50) and engine coolant
temperature gauge unit connector B-112 (terminal
1) in good condition?
YES :
Go to Step 4.
NO : Repair or replace the damage
component(s).
STEP 4. Retest the system
Q: Is the engine coolant temperature 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 the combination meter.
AC303800
Connector: C-13

Harness side
AG
AC303818
AM
Connector: C-137

Harness side

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-54
INSPECTION PROCEDURE 6: Combination meter does not work. (the instruments do not work)
TECHNICAL DESCRIPTION (COMMENT)
The cause is thought to be malfunction of the power,
earth circuitry or combination meter.
TROUBLESHOOTING HINTS
•Malfunction of the combination meter
•Damaged wiring harness or connectors
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 IGNITION
SWITCH (IG1)
COMBINATION
METER
CONTROL CIRCUIT BATTERY
RELAY
BOX
NOTELH drive vehicles
RH drive vehicles
Combination Meter Power Source Circuit

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-55
DIAGNOSIS PROCEDURE
STEP 1. Voltage measurement at combination
meter connector C-04 in order to check the
battery circuit of power supply system to the
combination meter.
(1) Disconnect the combination meter connector
C-04 and measure the voltage at combination
meter connector C-04 harness side.
(2) Measure the voltage between terminal 7 and
earth.
OK: System voltage
Q: IS the check result normal?
YES :
Go to Step 4.
NO : Go to Step 2.
STEP 2. Connector check: Combination meter
connector C-04.
Q: Is combination meter connector C-04 in good
condition?
YES :
Go to Step 3.
NO : Repair or replace the connector. Check to
see that all meters operate.
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT
AC301541
Connector C-04
(Harness side)
EZ
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-56
STEP 3. Check the wiring harness between
combination meter connector C-04 (terminal 7)
and battery.
NOTE: .Prior to the wiring harness inspection, check
intermediate connectors C-27 ,
C-115 , joint connector C-103,
and repair if necessary.
Q: Are the wiring harness between combination meter
connector C-04 (terminal 7) and battery in good
condition?
YES :
There is no action to be taken.
NO : Repair or replace the wiring harness. Check
to see that all meters operate.
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT
AC303798AX
Connector: C-27

Harness side
AC303802
Connector: C-103

Harness sideC-103 (GR)
AG
AC303818
AO
Connector: C-103

Harness side
C-103 (GR)
AC303816
Connector: C-115

Harness side
AZ

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-57
STEP 4. Voltage measurement at combination
meter connector C-04 to check the battery circuit
of power supply system to the combination
meter.
(1) Measure at combination meter connector C-04
without disconnecting the connector.
(2) Turn the ignition switch to “ON” position.
(3) Measure the voltage between terminal 9 and
earth.
OK: System voltageQ: Is the check result normal?
YES :
Go to Step 7.
NO : Go to Step 5.
STEP 5. Connector check: combination meter
connector C-04
Q: Is combination meter connector C-04 in good
condition?
YES :
Go to Step 6.
NO : Repair or replace the connector. Check to
see that all meters operate.
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT
AC301541
Connector: C-04
(Harness side)
FA
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT