Engine electrical MITSUBISHI LANCER 2005 Manual PDF

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

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 or 23 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
or engine-A/T-ECU connector C-124
Q: Is combination meter connector C-04 and
engine-ECU connector C-127 or
engine-A/T-ECU connector C-124 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

Harness side
AT
AC303805
Connector: C-124 , C-127

C-124 (GR)
Harness side
C-124
C-127
AM
C-127 (Y)
Harness side
AC303814
Connector: C-04

Harness side
AT
AC303817
Connector: C-124 , C-127

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)
or engine-A/T-ECU connector C-124
(terminal 43) .
AC303798
Connector: C-04

Harness side
AT
AC303805
Connector: C-124 , C-127

C-124 (GR)
Harness side
C-124
C-127
AM
C-127 (Y)
Harness side
AC303814
Connector: C-04

Harness side
AT
AC303817
Connector: C-124 , C-127

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 ,
C-136 , joint connector C-12
, C134 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) or
engine-A/T-ECU connector C-124 (terminal 43)
in good condition?
YES :
Replace the combination meter assembly.
NO : Repair or replace the damage
component(s).
AC303801
Connector: C-12, C-14

C-12C-14 (GR)
C-12
C-14 Harness side
AD
AC303819
Connector: C-134, C-136

C-136 (GR)
C-134
C-134
C-136 Harness side
AD

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-60
STEP 9. Check the wiring harness between
combination meter connector C-04 (terminal 1
and 2) and earth.
Q: Are the wiring harness between combination meter
connector C-04 (terminal 1 and 2) and earth in
good condition?
YES :
This procedure is complete.
NO : Repair or replace the wiring harness. Check
to see that all meters operate.
ON-VEHICLE SERVICE
SPEEDOMETER CHECKM1543000900423
Adjust the pressure of tyres to the specified level.
(Refer to GROUP 31, On-vehicle Service P.31-7.)
CAUTION
Do not operate the clutch suddenly. Do not
increase/decrease speed rapidly while testing.
1. Set the vehicle onto a speedometer tester and
use wheel chocks to hold the rear wheels.2. To prevent the front wheel from moving from side
to side, attach tension bars to the tie-down hook,
and secure both ends to anchor plates.
3. To prevent the vehicle from moving, attach a chain
or wire to the rear retraction hook, and make sure
the end of the chain or wire is secured.
4. Check if the speedometer indicator range is within
the standard values.
Standard value:
5. If not to the standard value, inspect for proper tyre
size. If not correct, replace the tyres with original
size tyres and retest. If correct, replace the
speedometer. If still not to standard value, replace
the vehicle speed sensor.
TACHOMETER CHECKM1543001000434
1. Attach an external high quality tachometer to the
engine speed detection connector on the harness
side (such as with a paper clip).
AC303798
Connector: C-04

Harness side
AT
AC303814
Connector: C-04

Harness side
AT
AC305135AB
Wheel stopper
Standard indicator
km/h (mph)Allowance range km/h
(mph)
20 (12) 20 − 24 (12 − 15)
40 (25) 40 − 44 (25 − 28)
80 (50) 80 − 85 (50 − 53)
120 (75) 121 − 127 (75 − 79)
160 (100) 162 − 169 (100 − 105)
200 (125) 203 − 211 (126 − 131)
AC001288
Tension bar
Front
Anchor plate
AB
AC305138AB
Engine speed
indicator
Paper clip
Probe for detection
of engine speed