Mitsubishi Galant (2004+). Manual — part 1463
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-95
TROUBLESHOOTING HINTS
• Malfunction of the fuel pump module or fuel level
sensor (sub).
• Malfunction of the combination meter
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector.
DIAGNOSIS
Required Special Tool:
• MB991223: Harness Set
STEP 1. Check the fuel pump module.
Check to see if the fuel pump module is normal. Refer to
Q: Is the fuel pump module normal?
YES : Go to Step 2.
NO : Replace the fuel pump module (Refer to GROUP
13C, Fuel Tank
). The fuel gauge should
now operate normally.
STEP 2. Check the fuel level sensor (sub).
Check to see if the fuel level sensor (sub) is normal. Refer to
Q: Is the fuel level sensor (sub) normal?
YES : Go to Step 3.
NO : Replace the fuel level sensor (Refer to GROUP 13C,
Fuel Tank
).
STEP 3. Check fuel pump module connector D-18 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is fuel pump module connector D-18 in good condition?
YES : Go to Step 4.
NO : Repair or replace the component(s). Refer to GROUP
00E, Harness Connector Inspection
AC305268
D-18 (GR)
AP
CONNECTOR: D-18
HARNESS SIDE
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-96
STEP 4. Test at fuel pump module connector D-18 to check
the power circuit to the fuel pump module.
(1) Remove the rear seat (Refer to GROUP 52A, Rear Seat
Assembly
(2) Use special tool MB991219 to connect a test lamp (12 V -
3.4 W) between the wiring harness connector terminals 1
and 2.
(3) Turn the Ignition switch to "ON" position.
(4) Check if the test lamp illuminates.
OK: Illuminates
Q: Is the check result satisfactory?
YES : Go to Step 11.
NO : Go to Step 5.
STEP 5. Measure the resistance at fuel pump module
connector D-18 to check the ground circuit to the fuel
pump module.
(1) Disconnect fuel pump module connector D-18, and
measure at the wiring harness side.
(2) Measure the resistance value between terminal 1 and
ground.
• The resistance should be 2 ohms or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 7.
NO : Go to Step 6.
AC305268
D-18 (GR)
AP
CONNECTOR: D-18
HARNESS SIDE
AC306950
AB
TEST LAMP
MB991219
AC305268
D-18 (GR)
AP
CONNECTOR: D-18
HARNESS SIDE
AC209364
CONNECTOR D-18
(HARNESS SIDE)
JS
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-97
STEP 6. Check the wiring harness between fuel pump
module connector D-18 (terminal 1) and ground.
Q: Is the wiring harness between fuel pump module
connector D-18 (terminal 1) and ground in good
condition?
YES : Go to Step 7.
NO : Repair the wiring harness. The fuel gauge should now
operate normally.
STEP 7. Check combination meter connector C-101 and
fuel level sensor (sub) connector D-17 for loose, corroded
or damaged terminals, or terminals pushed back in the
connector.
Q: Is combination meter connector C-101 and fuel level
sensor (sub) connector D-17 in good condition?
YES : Go to Step 8.
NO : Repair or replace the component(s). Refer to GROUP
00E, Harness Connector Inspection
to Step 4.
AC305268
D-18 (GR)
AP
CONNECTOR: D-18
HARNESS SIDE
AC305231CT
CONNECTOR: C-101
HARNESS SIDE
AC305268
AQ
CONNECTOR: D-17
HARNESS SIDE
COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR
TSB Revision
CHASSIS ELECTRICAL
54A-98
STEP 8. Check the wiring harness between combination
meter connector C-101 (terminal 13) and fuel level sensor
(sub) connector D-17 (terminal 2).
NOTE: Also check intermediate connectors C-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector C-28 is damaged, repair or
replace the connector as described in GROUP 00E, Harness
Connector Inspection
.
Q: Is the wiring harness between combination meter
connector C-101 (terminal 13) and fuel level sensor
(sub) connector D-17 (terminal 2) in good condition?
YES : Go to Step 9.
NO : Repair the wiring harness. The fuel gauge should now
operate normally.
AC305268
AQ
CONNECTOR: D-17
HARNESS SIDE
AC305232BA
CONNECTORS: C-28, C-101
C-28
C-101
C-28
HARNESS SIDE
C-101
9
21
33
35
24
12
3 4
7
8
5 6
39
28
41
30
18
4243
31
1920
32
40
29
1617
38
27
15
37
36
26
14
13
25
2
1
34
23
11
10
22
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