2005 MITSUBISHI LANCER coolant temperature

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-61
NOTE: For tachometer check, use an external
high quality inductive tachometer.
2. Compare the readings of the vehicle tachometer
and the external tachometer at every engine
speed, and check if the variations are within the
standard values.
Standard values:
FUEL TANK GAUGE UNIT CHECKM1543001200461
Remove the fuel tank gauge unit. (Refer to GROUP
13C, Fuel Tank P.13C-4.)
FUEL TANK GAUGE UNIT RESISTANCE
1. Check that resistance value between the fuel
gauge terminal and earth terminal is at the
standard value when the fuel tank gauge unit float
is between position "F" (highest) and position "E"
(lowest).
Standard values:
2. Check that resistance value changes smoothly
when the float moves slowly between position "F"
(highest) and position "E" (lowest).
3. If all checks are correct, go to fuel tank gauge unit
float height check. If any check is not correct,
replace the fuel tank gauge unit.
FUEL TANK GAUGE UNIT FLOAT HEIGHT
1. Move the float and measure height A at position
"F" (highest) and B at position "E" (lowest) with
the float arm touching stopper.
Standard values:
2. If all checks are correct, go to fuel tank gauge unit
float height check. If any check is not correct,
replace the fuel tank gauge unit.
ENGINE COOLANT TEMPERATURE
GAUGE UNIT CHECK
M1543001500398
1. Drain the engine coolant. (Refer to GROUP 14,
On-vehicle Service P.14-22.)
2. Remove the engine coolant temperature gauge
unit. Engine speed (r/min) Indication allowance of
tachometer r/min
700
± 120
2, 000
− 175 + 225
3, 000
− 175 + 300
4, 000
− 225 + 375
5, 000
− 225 + 425
6, 000
− 225 + 475
7, 000
− 200 + 500
8, 000
− 100 + 500
AC005208
123
AE
Fuel tank gauge unit
Earth
Position F
Position E
Float Position Resistance of Gauge
Position F 3 ± 1 Ω
Position E 110 ± 1 Ω
Float Position Float Centre Hight
Position F (A) 24.1 ± 2.0 mm
Position E (B) 151.6 ± 2.0 mm
AC005209
AD
Position F
Position E
Stopper
A
B

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-62
3. Put engine coolant temperature gauge unit into
the hot water in specified temperature, and
ensure that basic resistance is within standard
value.
Standard value: 104 ± 13.5 Ω (at 70C°)
Reference value4. After inspection, apply specified sealant at
threads of engine coolant temperature gauge unit,
and tighten to the specified torque.
Semi-drying sealant: 3M 1215 or equivalent
5. Add engine coolant. (Refer to GROUP 14,
On-vehicle Service P.14-22.)
Temperature (°C) Resistance Ω
50 230
60 155
80 73
ACX00779
AI
Circuit tester
Thermometer
ACX00780
AH
11 ± 1 N·m

COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL54A-64
INSPECTIONM1543019502407
VEHICLE SPEED SENSOR CHECK
1. Remove the vehicle speed sensor and connect a
3 − 10 kiloohms resistor as shown in the
illustration.
2. Turn the shaft of the vehicle speed sensor and
check that there is voltage between terminals 2 −
3. (1 turn = 4 pulses)
3. If within the standard value, the vehicle speed
sensor is OK.
If not within the standard value, replace the
vehicle speed sensor.
Standard value: 0 or Battery Voltage (1turn =
4pulses)
OUTPUT SHAFT SPEED SENSOR CHECK

Refer to P.23A-38.
COMBINATION METER INTERNAL
RESISTANCE CHECK
Use circuit tester to measure combination meter
internal resistance.
Standard Value:
AC305188AB
Tu r n
Shaft
Resistor
3 – 10 k¶
measurin
g terminal
No.Terminal name Standard
value (Ω)
1-21 Engine coolant temperature
gauge to earth233 ± 3
31-51 Fuel gauge to earth 181 ± 2
AC005210AC

ON-VEHICLE SERVICE
HEATER, AIR CONDITIONER AND VENTILATION55-76
FAN CONTROL RELAY CONTINUITY
CHECK
IDLE-UP OPERATION CHECK
M1552001600371
1. Before inspection and adjustment, set vehicle in
the following condition:
•Engine coolant temperature: 80 − 90 °C•Lamps, electric cooling fan and accessories: Set
to OFF
•Transmission: Neutral ("N" or "P" for vehicles with
A/T)
•Steering wheel: Straightforward
2. Check whether or not the idle speed is the
standard value. <1300, 1600> Refer to GROUP
13A, On-vehicle Service − Basic Idle Speed
Adjustment P.13A-387.
<2000> Refer to GROUP 13B, On-vehicle Service
− Basic Idle Speed Adjustment P.13B-324.
Standard value: 750 ± 50 r/min
3. When the A/C is running after turning the A/C
switch to ON, and the blower switch to the 3(MH)
or 4(HI) position, check to be sure that the idle
speed is at the standard value.
Standard value: 850 ± 50 r/min
NOTE: It is not necessary to make an adjustment,
because the idling speed is automatically
adjusted by the ISC system. If, however, a
deviation from the standard value occurs for some
reason, check the ISC system.
CLEAN AIR FILTER REPLACEMENT
PROCEDURE
M1552020100030
1. Remove the glove box (Refer to GROUP 52A,
Instrument Panel P.52A-2).
2. Remove the two screws as shown, and replace
the clean air filter.
3. Install the glove box. Battery voltage Tester
connectionSpecified
condition
Not applied 2 − 4 Open circuit
•Connect
terminal 1 to
the positive
battery
terminal
•Connect
terminal 3 to
the negative
battery
terminal2 − 4 Less than 2
ohms
AC305307
Fan control relay
13
4 2
3 4
1 2
AC
AC305114AB
Air filter
Instrument panel

METER AND GAUGE
CIRCUIT DIAGRAMS90-87
METER AND GAUGE
M1901003501072
RELAY
BOXBATTERYFRONT-ECU
(TAIL LAMP RELAY)
TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
ODO/TRIP
ENGINE
SPEED
DETECTION
CONNECTOR ENGINE-
ECU
ENGINE-
A/T-ECU
DIAGNOSIS
CONNECTOR
·TAIL LAMP, POSITION LAMP,
LICENCE PLATE LAMP AND
LIGHTING MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER ·FRONT FOG LAMP
·HEADLAMP
·HEADLAMP
LEVELLING SYSTEM
·REAR FOG LAMP
IGNITION
SWITCH (IG1)
COMBINATION
METER
CONTROL CIRCUIT
ENGINE
COOLANT
TEMPERATURE
GAUGE UNITFUEL
GAUGE
UNIT
NOTE
: SEDAN
: WAGON
: M/T
: A/T
FRONT SIDE : EXCEPT 4G6
: 4G6
WHITE METER>

METER AND GAUGE
CIRCUIT DIAGRAMS90-89
METER AND GAUGE
M1901003501083
DIAGNOSIS
CONNECTOR
RELAY
BOXBATTERYFRONT-ECU
TAIL
LAMP RELAY
TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZERTAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
ODO/TRIP
ENGINE
SPEED
DETECTION
CONNECTOR ENGINE-
ECU
ENGINE-
A/T-ECU
RHEOSTAT ·TAIL LAMP, POSITION LAMP,
LICENCE PLATE LAMP AND
LIGHTING MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER
WINDSHIELD WIPER
AND WASHER ·FRONT FOG LAMP
·HEADLAMP
·HEADLAMP
LEVELLING SYSTEM
·REAR FOG LAMP
IGNITION
SWITCH (IG1)
COMBINATION
METER
CONTROL CIRCUIT
ENGINE
COOLANT
TEMPERATURE
GAUGE UNITFUEL
GAUGE
UNIT
NOTE
: SEDAN
: WAGON
: M/T
: A/T
: EXCEPT 4G6
: 4G6
FRONT
SIDE ·TAIL LAMP, POSITION LAMP,
LICENCE PLATE LAMP AND
LIGHTING MONITOR BUZZER
·TURN-SIGNAL LAMP AND
HAZARD WARNING LAMP
·WINDSHIELD WIPER
AND WASHER ·FRONT FOG LAMP
·HEADLAMP
·REAR FOG LAMP
·REAR WIPER AND WASHER