Page 3817 of 5598

MWI-74
< DTC/CIRCUIT DIAGNOSIS >
A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000006221756
1.CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL
1. Turn ignition switch ON.
2. Check voltage between combination meter harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and A/C auto amp. connector.
3. Check continuity between combination meter harness connector and A/C auto amp. harness connector.
4. Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair harness or connector.
Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (
−)
Combination meter Ground
Connector Terminal
M34 19 5 V
Combination meter A/C auto amp. Continuity
Connector Terminal Connector Terminal
M34 19 M50 6 Existed
Combination meter GroundContinuity
Connector Terminal
M34 19 Not existed
Revision: 2010 May2011 QX56
Page 3818 of 5598

MWI
THE FUEL GAUGE INDICATOR DOES NOT OPERATE
MWI-75
< SYMPTOM DIAGNOSIS >
C
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SYMPTOM DIAGNOSIS
THE FUEL GAUGE INDICA TOR DOES NOT OPERATE
DescriptionINFOID:0000000006221757
Fuel gauge will not indicate from a certain position.
Diagnosis ProcedureINFOID:0000000006221758
1.CHECK COMBINATION METER OUTPUT SIGNAL
1. Connect CONSULT-III.
2. 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. Refer to MWI-69, "
Component Function Check".
Does monitor value match fuel gauge reading?
YES >> GO TO 2.
NO >> Replace combination meter. Refer to MWI-85, "
Removal and Installation".
2.CHECK FUEL LEVEL SENSOR SIGNAL CIRCUIT
Check the fuel level sensor signal circuit. Refer to MWI-69, "
DiagnosisProcedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK FUEL LEVEL SENSOR UNIT
Perform a unit check for the fuel level sensor unit. Refer to MWI-70, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace fuel level sensor unit. Refer to FL-5, "
Removal and Installation".
4.CHECK FLOAT INTERFERENCE
Check that the float arm interferes with or binds to other components in the fuel tank.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Repair or replace malfunctioning parts.
Revision: 2010 May2011 QX56
Page 3819 of 5598

MWI-76
< SYMPTOM DIAGNOSIS >
THE TRIP RESET AND ILLUMINATION CONTROL SWITCH IS INOPERATIVE
THE TRIP RESET AND ILLUMINATION CONTROL SWITCH IS INOPERA-
TIVE
DescriptionINFOID:0000000006221759
If any of the following malfunctions is found for t he trip reset and illumination control switch operation.
All switches are inoperative
The specified switch cannot be operated
Diagnosis ProcedureINFOID:0000000006221760
1.CHECK TRIP RESET AND ILLUMINATI ON CONTROL SWITCH SIGNAL CIRCUIT
Check the trip reset and illumination cont rol switch signal circuit. Refer to MWI-65, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK TRIP RESET AND ILLU MINATION CONTROL SWITCH
Perform a unit check for the trip reset and illumination control switch. Refer to MWI-66, "
Component Inspec-
tion".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NG >> Replace trip reset and illumination control switch. Refer to MWI-86, "
Removal and Installation".
Revision: 2010 May2011 QX56
Page 3820 of 5598
MWI
THE TRIP COMPUTER SWITCH IS INOPERATIVEMWI-77
< SYMPTOM DIAGNOSIS >
C
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M B A
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THE TRIP COMPUTER SW ITCH IS INOPERATIVE
DescriptionINFOID:0000000006221761
If any of the following malfunctions is f ound for the trip computer switch operation.
All switches are inoperative
The specified switch cannot be operated
Diagnosis ProcedureINFOID:0000000006221762
1.CHECK TRIP COMPUTER SWITCH SIGNAL CIRCUIT
Check the trip computer switch signal circuit. Refer to MWI-67, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK TRIP COMPUTER SWITCH
Perform a unit check for the trip computer switch. Refer to MWI-68, "
Component Inspection".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NG >> Replace trip computer switch. Refer to MWI-87, "
Removal and Installation".
Revision: 2010 May2011 QX56
Page 3821 of 5598

MWI-78
< SYMPTOM DIAGNOSIS >
THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON
THE OIL PRESSURE WARNING LAMP DOES NOT TURN ON
DescriptionINFOID:0000000006221763
The oil pressure warning lamp stays off when the ignition switch is turned ON.
Diagnosis ProcedureINFOID:0000000006221764
1.CHECK OIL PRESSURE WARNING LAMP
Perform auto active test. Refer to PCS-10, "
Diagnosis Description".
Is oil pressure warning lamp blinking?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT
Check the oil pressure switch signal circuit. Refer to MWI-71, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK OIL PRESSURE SWITCH
Perform a unit check for the oil pressure switch. Refer to MWI-71, "
Component Inspection".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Replace oil pressure switch. Refer to EM-58, "
Removal and Installation".
4.CHECK COMBINATION METER INPUT SIGNAL
Connect CONSULT-III and perform an input signal check for the combination meter. Refer to MWI-71, "
Com-
ponent Function Check".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace IPDM E/R. Refer to PCS-32, "
Removal and Installation".
Revision: 2010 May2011 QX56
Page 3822 of 5598

MWI
THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFFMWI-79
< SYMPTOM DIAGNOSIS >
C
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THE OIL PRESSURE WARNING LAMP DOES NOT TURN OFF
DescriptionINFOID:0000000006221765
The oil pressure warning lamp remains illuminated while the engine is running (normal oil pressure).
Diagnosis ProcedureINFOID:0000000006221766
1.CHECK OIL PRESSURE WARNING LAMP
Perform auto active test. Refer to PCS-10, "
Diagnosis Description".
Is oil pressure warning lamp blinking?
YES >> GO TO 2.
NO >> GO TO 5.
2.CHECK IPDM E/R OUTPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect the oil pressure switch connector.
3. Turn ignition switch ON.
4. Check voltage between the oil pressure switch harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK OIL PRESSURE SWITCH
Perform a unit check for the oil pressure switch. Refer to MWI-71, "
Component Inspection".
Is the inspection result normal?
YES >> Replace IPDM E/R. Refer to PCS-32, "Removal and Installation".
NO >> Replace oil pressure switch. Refer to EM-58, "
Removal and Installation".
4.CHECK OIL PRESSURE SWITCH SIGNAL CIRCUIT
Check the oil pressure switch signal circuit. Refer to MWI-71, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair harness or connector.
5.CHECK COMBINATION METER INPUT SIGNAL
Connect CONSULT-III and perform an input signal check for the combination meter. Refer to MWI-71, "
Com-
ponent Function Check".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace IPDM E/R. Refer to PCS-32, "
Removal and Installation".
Te r m i n a l s
Voltag e
(Approx.)
(+) (
−)
Oil pressure switch Ground
Connector Terminal
E206 1 12 V
Revision: 2010 May2011 QX56
Page 3823 of 5598

MWI-80
< SYMPTOM DIAGNOSIS >
THE PARKING BRAKE RELEASE WARNING CONTINUES DISPLAYING, OR
DOES NOT DISPLAY
THE PARKING BRAKE RELEASE WA RNING CONTINUES DISPLAYING,
OR DOES NOT DISPLAY
DescriptionINFOID:0000000006221767
The parking brake warning is displayed during vehi cle travel even though the parking brake is released.
The parking brake warning is not displayed even though driving the vehicle with the parking brake applied.
Diagnosis ProcedureINFOID:0000000006221768
1.CHECK PARKING BRAKE WARNING LAMP OPERATION
1. Start engine.
2. Check the operation of the brake warni ng lamp when operating the parking brake.
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> GO TO 2.
2.CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Check the parking brake switch signal circuit. Refer to WCS-43, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK PARKING BRAKE SWITCH UNIT
Perform a unit check for the parking brake switch. Refer to BRC-118, "
Component Inspection".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace parking brake switch. Refer to PB-5, "
Exploded View".
Condition Warning lamp status
Parking brake applied ON
Parking brake released OFF
Revision: 2010 May2011 QX56
Page 3824 of 5598
MWI
THE LOW WASHER FLUID WARNING CONTINUES DISPLAYING, OR DOES
NOT DISPLAY
MWI-81
< SYMPTOM DIAGNOSIS >
C
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M B A
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THE LOW WASHER FLUID WARNING CONTINUES DISPLAYING, OR
DOES NOT DISPLAY
DescriptionINFOID:0000000006221769
The warning is still displayed even after washer fluid is added.
The warning is not displayed even though the washer tank is empty.
Diagnosis ProcedureINFOID:0000000006221770
1.CHECK WASHER LEVEL SWITCH SIGNAL CIRCUIT
Check the washer level switch signal circuit. Refer to MWI-73, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK WASHER LEVEL SWITCH UNIT
Perform a unit check for the washer level switch. Refer to MWI-73, "
Component Inspection".
Is the inspection result normal?
YES >> Replace combination meter. Refer to MWI-85, "Removal and Installation".
NO >> Replace washer level switch. Refer to WW-62, "
Removal and Installation".
Revision: 2010 May2011 QX56