Infiniti I35 (A33). Manual — part 384
INSPECTION/FUEL LEVEL SENSOR UNIT
=NHEL0046S08
1
CHECK GROUND CIRCUIT FOR FUEL LEVEL SENSOR UNIT
Check harness continuity between fuel level sensor unit and fuel pump harness connector terminal 5 and ground.
SEL182W
OK or NG
OK
©
GO TO 2.
NG
©
Repair harness or connector.
2
CHECK FUEL LEVEL SENSOR UNIT
Refer to “FUEL LEVEL SENSOR UNIT CHECK” (EL-140).
OK or NG
OK
©
GO TO 3.
NG
©
Replace fuel level sensor unit.
3
CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and fuel level sensor unit and fuel pump connector.
2. Check continuity between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 17 (G)
and fuel level sensor unit and fuel pump harness connector B19 terminal 2 (G).
Continuity should exist.
3. Check continuity between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 17 (G)
and ground.
Continuity should not exist.
SEL183WA
OK or NG
OK
©
Fuel level sensor unit is OK.
NG
©
Repair harness or connector.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses (Cont’d)
EL-137
INSPECTION/THERMAL TRANSMITTER
=NHEL0046S09
1
CHECK ECM OUTPUT
1. Disconnect combination meter.
2. Check voltage between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 18 (PU/W)
and ground.
Battery voltage should exist.
SEL413Y
OK or NG
OK
©
GO TO 2.
NG
©
Replace.
2
CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and ECM connector.
2. Check continuity between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 18
(PU/W) and ECM terminal 18 (PU/W).
Continuity should exist.
3. Check continuity between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 18
(PU/W) and ground.
Continuity should not exist.
SEL417Y
OK or NG
OK
©
Thermal transmitter is OK.
NG
©
Repair harness or connector.
METERS AND GAUGES
Trouble Diagnoses (Cont’d)
EL-138
3
CHECK WATER TEMPERATURE OUTPUT SIGNAL
1. Connect combination meter connector and ECM connector.
2. Start engine.
3. Check output signal between combination meter harness connector M33 (with TCS) or M214 (with VDC) terminal 18
(PU/W) and ground. (Use “SIMPLE OSCILLOSCOPE” in “SUB MODE” with CONSULT-II.)
SEL414Y
OK or NG
OK
©
Replace combination meter.
NG
©
Check ECM.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
Trouble Diagnoses (Cont’d)
EL-139
MEL372K
Electrical Components Inspection
=NHEL0047
FUEL LEVEL SENSOR UNIT CHECK
NHEL0047S01
I
For removal, refer to FE-6, “REMOVAL”.
Check the resistance between terminals 2 and 5.
Ohmmeter
Float position
mm (in)
Resistance
value
Ω
(+)
(−)
2
5
*1
Full
158 (6.22)
Approx. 4.5 - 5.5
*2
1/2
89.7 (3.531)
31.5 - 33.5
*3
Empty
22.1 (0.870)
80.0 - 80.3
*1 and *3: When float rod is in contact with stopper.
CEL219AA
VEHICLE SPEED SENSOR SIGNAL CHECK
NHEL0047S03
1.
Remove vehicle speed sensor from transmission.
2.
Turn vehicle speed sensor pinion quickly and measure voltage
across 1 and 2.
METERS AND GAUGES
Electrical Components Inspection
EL-140
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