Mitsubishi Lancer Evolution IX. Manual — part 278
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL
54A-49
DIAGNOSIS PROCEDURE
STEP 1. Check combination meter connector
C-01 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
AC310446
Connector: C-01
<L.H. drive vehicles>
Harness side
BF
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
Q: Is combination meter connector C-01 in good
condition?
YES :
Go to Step 2.
NO :
Repair or replace the damaged
component(s). If the functions, which are
described in "CIRCUIT OPERATION", work
normally, the input signal from the ignition
switch (IG1) should be normal.
STEP 2. Check the battery power supply circuit
to the combination meter. Voltage measurement
at combination meter connector C-01.
AC310446
Connector: C-01
<L.H. drive vehicles>
Harness side
BF
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
(1) Disconnect combination meter connector C-01
and measure the voltage available at the wiring
harness side of the connector.
AC301541
Connector C-01
(Harness side)
HT
(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 3.
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL
54A-50
STEP 3. Check the wiring harness between
combination meter connector C-01 (terminal 7)
and battery.
AC310447
Connectors: C-01, C-05, C-129
<L.H. drive vehicles>
AX
C-01
C-01
C-129
C-05(GR)
C-05
C-129
Harness side
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
AC310455
Connectors: C-05, C-129
<R.H. drive vehicles>
AL
C-129
C-05(GR)
C-05
C-129
NOTE: Also check intermediate connector C-129
and joint connector C-05 for loose, corroded, or dam-
aged terminals, or terminals pushed back in the con-
nector. If intermediate connector C-129 or joint
connector C-05 is damaged, repair or replace the
connector.
Q: Is the wiring harness between combination meter
connector C-01 (terminal 7) and battery in good
condition?
YES :
There is no action to be taken.
NO :
Repair the wiring harness. Check to see that
all meters operate.
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL
54A-51
STEP 4. Check the ignition switch (IG1) circuit to
the combination meter. Voltage measurement at
combination meter connector C-01.
AC310446
Connector: C-01
<L.H. drive vehicles>
Harness side
BF
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
(1) Disconnect combination meter connector C-01
and measure the voltage available at the wiring
harness side of the connector.
(2) Turn the ignition switch to the "ON" position.
AC301541
Connector C-01
(Harness side)
HT
(3) Measure the voltage between terminal 9 and
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 5.
STEP 5. Check the wiring harness between
combination meter connector C-01 (terminal 9)
and ignition switch (IG1).
AC310447
C-23(B)
C-01
AY
C-23
Connectors: C-01, C-23
<L.H. drive vehicles>
C-01
Harness side
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
COMBINATION METER ASSEMBLY
CHASSIS ELECTRICAL
54A-52
NOTE:
AC310449
Junction block
(Front view)
Connectors: C-211, C-214
<L.H. drive vehicles>
C-211
C-214
Harness side
AR
C-211
C-214
AC310459
Junction block
(Front view)
Connectors: C-211, C-214
<R.H. drive vehicles>
C-211
C-214
Harness side
AR
C-211
C-214
Also check junction block connector C-211 and
C-214, joint connector C-23 <LH drive vehicles> for
loose, corroded, or damaged terminals, or terminals
pushed back in the connector. If junction block con-
nector C-211 or C-214 or joint connector C-23 <LH
drive vehicles> is damaged, repair or replace the
connector.
Q: Is the wiring harness between combination meter
connector C-01 (terminal 9) and ignition switch
(IG1) in good condition?
YES :
There is no action to be taken.
NO :
Repair the wiring harness. Check to see that
all meters operate.
STEP 6. Check the earth circuit to the
combination meter. Resistance measurement at
combination meter connector C-01.
AC310446
Connector: C-01
<L.H. drive vehicles>
Harness side
BF
AC310456
Connector: C-01
<R.H. drive vehicles>
Harness side
AU
(1) Disconnect combination meter connector C-01
and measure the resistance available at the
wiring harness side of the connector.
AC301541HV
Connector: C-01
(Harness side)
(2) Measure the resistance between terminal 1 and
earth.
OK: 2 ohms or less
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