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COMBINATION METERS (LHD MODELS)
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Trouble DiagnosesEKS002ZD
PRELIMINARY CHECK
1.CHECK WARNING LAMPS
1. Turn ignition switch ON.
2. Warning lamps should illuminate (seat belt warning or door warning etc.).
Do warning lamps illuminate?
Ye s > > G O T O 2 .
No >> Power supply and ground circuit check. Refer to DI-13, "
Power Supply and Ground Circuit Check"
.
2.CHECK DIAGNOSIS MODE OPERATION
Preform diagnosis mode. Refer to DI-10, "
Meter/Gauge Operation and Odo/Trip Meter Segment Check in
Diagnosis Mode" .
Can diagnosis mode be activated?
Ye s > > G O T O 3 .
No >> Power supply and ground circuit check. Refer to DI-13, "
Power Supply and Ground Circuit Check"
3.SEGMENTS CHECK
Check odo / trip meter segment.
Do all segments illuminate?
Ye s > > G O T O 4 .
No >> Replace combination meter.
4.FUEL WARNING LAMP ILLUMINATION CONFIRMATION
During fuel warning lamp check, confirm illumination of fuel warning lamp.
OK or NG
OK >> GO TO 5.
NG >> Replace the combination meter.
5.CHECK METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode.
OK or NG
OK >> Go to symptom chart.
NG >> Replace combination meter.
SKIA0899E
Condition of odo/trip
meter switchFuel warning lamp
Pushed Does not illuminate.
Released Illuminates.
SKIA4366E
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DI-12
COMBINATION METERS (LHD MODELS)
SYMPTOM CHART
Symptom Possible cause Repair procedure
Fuel warning lamp is
malfunctioning.
1. Sensor Signal
–Engine revolution signal
–Fuel gauge
–Water temp gauge
2. Unified meter control unit 1. Check the sensor for malfunctioning meter/gauge.
–INSPECTION/ENGINE SPEED SIGNAL (Refer to DI-13, "Inspec-
tion/Engine Speed Signal" .)
–INSPECTION/FUEL LEVEL SENSOR UNIT (Refer to DI-17,
"Inspection/Fuel Level Sensor Unit" .)
–INSPECTION/THERMAL TRANSMITTER (Refer to DI-14,
"Inspection/Water Temperature Gauge /Gasoline Engine Models"
or DI-15, "Inspection/Water Temperature Gauge (Diesel Engine
Models)" .)
2. Replace combination meter One of tachometer/fuel
gauge/water temp. gauge is
malfunctioning.
Speedometer and odo/trip
meter is malfunctioning.1. Sensor Signal
–Vehicle speed signal
2. Unified meter control unit 1. Check the sensor for malfunctioning meter/gauge.–INSPECTION/VEHICLE SPEED SIGNAL (Refer to DI-13,
"Inspection/Engine Speed Signal" .)
2. Replace combination meter
Multiple meter/gauge are
malfunctioning.
●Unified meter control unit●Replace combination meter.
Page 3571 of 3833

COMBINATION METERS (LHD MODELS)
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Power Supply and Ground Circuit CheckEKS002ZE
1.POWER SUPPLY CIRCUIT CHECK
OK or NG
OK >> GO TO 2.
NG >> Check the following:
●10A fuse [No. 11, located in fuse block (J/B)]
●10A fuse [No. 28, located in fuse block (J/B)]
●Harness for open or short between fuse and combination meter
2.GROUND CIRCUIT CHECK
OK or NG
OK >> Inspection end.
NG >> Check harness for open ground circuit.
Inspection/Engine Speed SignalEKS002ZF
1.CHECK ECM OUTPUT
1. Start engine.
2. Check voltage between combination meter harness connector
M46 terminals 54 (L/OR) and ground at idle and 2,000 rpm.
OK or NG
OK >> Engine speed signal is OK.
NG >> Check harness for open or short between ECM and
combination meter.
Terminals Ignition switch position
(+)
(−)OFF ACC ON
ConnectorTerminal
(wire color)
M46 45 (L) GroundBattery
voltageBattery
voltageBattery
voltage
M46 46 (W/L) Ground 0V 0VBattery
voltage
SKIA0982E
Terminals
Continuity (+)
(-)
ConnectorTerminal
(wire color)
M46 47 (B) Ground Yes
SKIA0983E
Higher rpm = Higher voltage
Lower rpm = Lower voltage
Voltage should change with rpm.
SKIA0984E
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DI-14
COMBINATION METERS (LHD MODELS)
Inspection/Water Temperature Gauge /Gasoline Engine Models
EKS002ZT
1. CHECK ECM OUTPUT
1. Disconnect combination meter.
2. Check voltage between combination meter harness connector
M46 terminal 55 (PU/W) and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect ECM connector.
2. Check continuity between combination meter harness connector
M46 terminal 55 (PU/W) and ECM harness connector F43 termi-
nal 32 (PU/W).
3. Check continuity between combination meter harness connector
M46 terminal 55 (PU/W) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
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 con-
nector M46 terminal 55 (PU/W) and ground. (Use “SIMPLE
OSCILLOSCOPE” in “SUB MODE” with CONSULT-II.)
OK or NG
OK >> Replace combination meter.
NG >> Check ECM.Battery voltage should exist.
SKIA0985E
Continuity should exist.
Continuity should not exist.
SKIA0986E
55 (PU/W) – ground
SKIA0987E
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COMBINATION METERS (LHD MODELS)
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Inspection/Water Temperature Gauge (Diesel Engine Models)EKS002ZG
1.CHECK THERMAL TRANSMITTER
Refer to DI-22, "
THERMAL TRANSMITTER CHECK" .
OK or NG
OK >> GO TO 2.
NG >> Replace thermal transmitter.
2.CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and thermal transmit-
ter connector.
2. Check continuity between combination meter harness connector
M46 terminal 55 (PU/W) and thermal transmitter harness con-
nector F23 terminal 1 (PU/W).
3. Check continuity between combination meter harness connector
M46 terminal 55 (PU/W) and ground.
OK or NG
OK >> Thermal transmitter is OK.
NG >> Replace harness or connector.Continuity should exist.
Continuity should not exist.
SKIA0988E
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DI-16
COMBINATION METERS (LHD MODELS)
Inspection/Vehicle speed signal
EKS002ZH
1. CHECK ABS WARNING LAMP
●Turn the ignition switch ON, then ABS warning lamp turn ON.
OK or NG
OK >> Check 4WD control unit (with ESP) or 4WD/ABS control unit (without ESP).
NG >> GO TO 2.
2. CHECK HARNESS FOR OPEN OR SHORT
1. Disconnect combination meter connector and 4WD control unit (with ESP) or 4WD/ABS control unit (with-
out ESP) connector.
2. Check continuity between combination meter harness connector
M46 terminal 52 (R/B) and 4WD control unit (with ESP) or 4WD/
ABS control unit (without ESP) harness connector E122 terminal
20 (R/B).
3. Check continuity between combination meter harness connector
M46 terminal 52 (R/B) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK 4WD/ABS CONTROL UNIT (WITHOUT ESP) OR 4WD CONTROL UNIT (WITH ESP) OUTPUT
1. Connect combination meter connector.
2. Check voltage between combination meter harness connector
M46 terminal 52 (R/B) and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace combination meter.
4. CHECK VEHICLE SPEED INPUT SIGNAL
1. Connect 4WD control unit (with ESP) or 4WD/ABS control unit
(without ESP) connector.
2. Lift up drive wheels.
3. Start engine.
4. Check voltage signal between combination meter harness con-
nector M46 terminal 52 (R/B) and ground. (Use “SIMPLE
OSCILLOSCOPE” in “SUB MODE” with CONSULT-II.)
OK or NG
OK >> Replace combination meter.
NG >> Check 4WD control unit (with ESP) or 4WD/ABS control unit (without ESP). ABS warning lamp should illuminate.
Continuity should exist.
Continuity should not exist.
SKIA4423E
Approx. 9V
SKIA1004E
52 (R/B) – ground
SKIA0990E
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COMBINATION METERS (LHD MODELS)
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Inspection/Fuel Level Sensor UnitEKS002ZI
FUEL LEVEL SENSOR UNIT
The following symptoms do not indicate a malfunction.
●Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.
●If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
LOW-FUEL WARNING LAMP
Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the warning lamp
ON timing may be changed.
1.DIAGNOSIS MODE INSPECTION
Preform the combination meter diagnosis mode. Refer to DI-10, "
Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode" .
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2.HARNESS CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Check combination meter, fuel level sensor unit and terminals (meter-side, module-side, and harness-
side) for poor connection and bend.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace terminals or connectors.
3.CHECK FUEL LEVEL SENSOR FOR OPEN CIRCUIT
1. Disconnect combination meter connector, fuel level sensor unit
connector and sub fuel level sensor unit connector.
2. Check the following.
–Continuity between combination meter harness connector M46
terminal 51 (G) and sub fuel level sensor unit harness connector
B125 terminal 1 (G).
–Continuity between sub fuel level sensor unit harness connector
B125 terminal 3 (Y) and fuel level sensor unit harness connector
B31(Gasoline engine models) or B32 (Diesel engine models)
terminal 4 (Y).
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harnesses or connectors.Continuity should exist.
SKIA0991E
Continuity should exist.
SKIA1005E
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DI-18
COMBINATION METERS (LHD MODELS)
4. CHECK FUEL LEVEL SENSOR SHORT CIRCUIT
1. Checking the following.
–Continuity between combination meter harness connector M46
terminal 51 (G) and ground.
–Continuity between sub fuel level sensor harness connector
B125 terminal 3 (Y) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harnesses or connectors.
5. CHECK FUEL LEVEL SENSOR GROUND CIRCUIT
Check continuity between fuel level sensor unit harness connector
B31(Gasoline engine models) or B32 (Diesel engine models) termi-
nal 1 (B/W) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harnesses or connectors.
6. FUEL LEVEL SENSOR UNIT INSPECTION
Check the components. Refer to DI-21, "
Electrical Components Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace fuel level sensor unit or sub fuel level sensor unit.
7. CHECK INSTALLATION CONDITION
Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any compo-
nents inside the arm.
OK or NG
OK >> Replace combination meter.
NG >> Install fuel level sensor unit or sub fuel sensor unit properly.
The Fuel Gauge Pointer Fluctuates·Indicator Wrong Value·or Varies.EKS002ZJ
1. CHECK THE FUEL GAUGE POINTER FOR FLUCTUATION
Does the indication value fluctuate during driving or before/after stop?
Does the indication value vary?
Yes >> The pointer fluctuation may be caused by fuel level change in the fuel tank.
No >> Ask the customer about the situation when the symptom occurs in detail, and Preform the trouble
diagnosis. Continuity should not exist.
Continuity should not exist.
SKIA0992E
Continuity should exist.
SKIA1007E