Page 3297 of 5121

MWI
POWER SUPPLY AND GROUND CIRCUIT
MWI-43
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000003900506
1.CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible links are not blown.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
Signal name Fuse and fusible link No.
Battery power supplyI
10
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
BCM
Ground Connector Terminal
M118 1
Battery voltage
M119 11
BCM
GroundContinuity
Connector Terminal
M119 13 Existed
Signal name Fuses and fusible link No.
Battery power supplyE
50
51
Page 3298 of 5121
MWI-44
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
2. Disconnect IPDM E/R connector.
3. Check voltage between IPDM E/R harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.
Te r m i n a l s
Vo l ta g e
(Approx.) (+)
(−)
IPDM E/R
Connector Terminal
Ground
E9 1 Battery voltage
IPDM E/R
GroundContinuity
Connector Terminal
E10 12
Existed
E11 41
Page 3299 of 5121

MWI
FUEL LEVEL SENSOR SIGNAL CIRCUIT
MWI-45
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
FUEL LEVEL SENSOR SIGNAL CIRCUIT
DescriptionINFOID:0000000003792570
The fuel level sensor unit and fuel pump detect the fuel level in the fuel tank and transmit the fuel gauge signal
to the combination meter.
Component Function CheckINFOID:0000000003792571
1.CHECK COMBINATION METER OUTPUT SIGNAL
Select the “Data Monitor” for the “METER/M&A” and compare the “FUEL METER” monitor value with the fuel
gauge reading on the combination meter.
Does monitor value match fuel gauge reading?
YES >> INSPECTION END
NO >> Replace combination meter.
Diagnosis ProcedureINFOID:0000000003792572
1.CHECK COMBINATION METER INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector terminal and ground.
Does it match fuel gauge reading?
YES >> GO TO 2.
NO >> Replace the combination meter.
2.CHECK FUEL LEVEL SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and fuel level sensor unit and fuel pump connector.
3. Check continuity between combination meter harness connector terminal and fuel level sensor unit and
fuel pump harness connector terminal.
Fuel gauge pointer Reference value of data monitor [lit.]
Full Approx. 64.6
Three quarters Approx. 53.5
Half Approx. 36.0
A quarter Approx. 18.5
Empty Approx. 8.0
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (-)
Combination meter
Ground Terminal Connector
M34 34
JPNIA0740ZZ
Page 3300 of 5121

MWI-46
< COMPONENT DIAGNOSIS >
FUEL LEVEL SENSOR SIGNAL CIRCUIT
4. Check continuity between combination meter harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK FUEL LEVEL SENSOR GROUND CIRCUIT
Check continuity between fuel level sensor unit and fuel pump harness connector terminal and combination
meter harness connector terminal.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Component InspectionINFOID:0000000003792573
1.REMOVE FUEL LEVEL SENSOR UNIT
Remove the fuel level sensor unit. Refer to FL-5, "
Removal and Installation".
>> GO TO 2.
2.CHECK FUEL LEVEL SENSOR UNIT
Check the resistance between fuel level sensor unit.
* : When float rod is in contact with stopper.
Te r m i n a l s
Continuity (+) (-)
Combination meter Fuel level sensor unit and fuel pump
Connector Terminal Connector Terminal
M34 34 B40 2 Existed
Te r m i n a l s
Continuity (+) (-)
Combination meter
Ground Connector Terminal
M34 34 Not existed
Te r m i n a l s
Continuity (+) (-)
Fuel level sensor unit and fuel pump Combination meter
Connector Terminal Connector Terminal
B40 5 M34 24 Existed
Te r m i n a l s
ConditionResistance
(Ω)Height
[mm (in)] Fuel level sensor unit
(+) (-)
Con-
nectorTe r m i -
nalCon-
nectorTe r m i -
nal
B402B405Full (A)
*6167.8
(6.61)
Empty (B)
*8035.9
(1.413)JPNIA1018ZZ
Page 3301 of 5121
MWI
FUEL LEVEL SENSOR SIGNAL CIRCUIT
MWI-47
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace fuel level sensor unit.
Page 3302 of 5121

MWI-48
< COMPONENT DIAGNOSIS >
METER CONTROL SWITCH SIGNAL CIRCUIT
METER CONTROL SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000003792574
Transmits the following signals to the combination meter.
Diagnosis ProcedureINFOID:0000000003792575
1.CHECK METER CONTROL SWITCH INPUT SIGNAL
1. Turn the ignition switch ON.
2. Check voltage between the following terminals of the combination meter.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK METER CONTROL SWITCH SIGNAL CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the combination meter and meter control switch connectors.
3. Check continuity between combination meter harness connector terminals and meter control switch har-
ness connector terminals.
4. Check continuity between combination meter harness connector terminals and ground.
Is the inspection result normal?
(enter) switch is pressed (select) switch signal
Te r m i n a l s
ConditionVol tag e
(Approx.) Combination meter
(+) (-)
Connector Terminal Connector Terminal
M3411
M34 10When (enter) switch is pressed0 V
Other than the above 5 V
12When (select) switch is pressed0 V
Other than the above 5 V
Te r m i n a l s
Continuity Combination meter Meter control switch
(+) (-)
Connector Terminal Connector Terminal
M3410
M832
Existed 11 7
12 6
Te r m i n a l s
Continuity (+) (-)
Combination meter
Ground Connector Terminal
M3410
Not existed 11
12
Page 3303 of 5121
MWI
METER CONTROL SWITCH SIGNAL CIRCUIT
MWI-49
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
MB A
O
P
YES >> INSPECTION END
NO >> Repair harness or connector.
Component InspectionINFOID:0000000003792576
1.CHECK METER CONTROL SWITCH
1. Turn the ignition switch OFF.
2. Disconnect the meter control switch connector.
3. Check continuity between the following terminals of the meter control switch.
Is inspection result OK?
YES >> INSPECTION END
NO >> Replace the meter control switch.
Connector Terminal No. Operation and status Continuity
M8362Press the (select) switchExisted
Other than the above Not existed
72Press the (enter) switchExisted
Other than the above Not existed
Page 3304 of 5121

MWI-50
< COMPONENT DIAGNOSIS >
OIL PRESSURE SWITCH SIGNAL CIRCUIT
OIL PRESSURE SWITCH SIGNAL CIRCUIT
DescriptionINFOID:0000000003792577
Detects the engine oil pressure and transmits the oil pressure switch signal to IPDM E/R.
Component Function CheckINFOID:0000000003792578
1.CHECK COMBINATION METER INPUT SIGNAL
Select the “Data Monitor” for the “METER/M&A” and check the “OIL W/L” monitor value.
>> INSPECTION END
Diagnosis ProcedureINFOID:0000000003792579
1.CHECK OIL PRESSURE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and oil pressure switch connector.
3. Check continuity between IPDM E/R harness connector terminal and oil pressure switch harness connec-
tor terminal.
4. Check continuity between IPDM E/R harness connector terminal and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Component InspectionINFOID:0000000003792580
1.CHECK OIL PRESSURE SWITCH UNIT
“OIL W/L”
Ignition switch ON : On
Engine running : Off
Te r m i n a l s
Continuity (+) (-)
IPDM E/R Oil pressure switch
Connector Terminal Connector Terminal
F12 75 F63 1 Existed
Te r m i n a l s
Continuity (+) (-)
IPDM E/R
Ground Connector Terminal
F12 75 Not existed