Contents Section: Meter / Gauge / Display (diagnostics) All sections

PROBLEM SYMPTOMS TABLE Lexus IS F I

Meter / Gauge / Display (diagnostics) 8 illustrations ~1678 words

PROBLEM SYMPTOMS TABLE

HINT

  1. Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptoms by checking the suspected areas in the order they are listed. Replace parts as necessary.
  2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.
SymptomSuspected AreaSee
Entire combination meter does not operate.Combination Meter CircuitRefer to Entire Combination Meter does not Operate
Light control rheostat malfunctionLight Control Rheostat CircuitRefer to Operating Light Control Rheostat does not Change Light Brightness
Meter Illumination is Always Dark.Meter Illumination CircuitRefer to Meter Illumination is Always Dark
Meter Illumination does not Dim at Night.Meter Illumination CircuitRefer to Meter Illumination does not Dim at Night
Satellite switch malfunctionSatellite Switch CircuitRefer to Satellite Switch Circuit

ENTIRE SYSTEM

SymptomSuspected AreaSee
Speedometer malfunctionSpeedometer CircuitRefer to Speedometer Malfunction
Tachometer malfunctionTachometer CircuitRefer to Tachometer Malfunction
Fuel receiver gauge malfunctionFuel Receiver Gauge CircuitRefer to Fuel Receiver Gauge Malfunction
Engine coolant temperature receiver gauge malfunctionEngine Coolant Temperature Receiver Gauge CircuitRefer to Engine Coolant Temperature Receiver Gauge Malfunction
Engine oil temperature gauge malfunctionOil Temperature Gauge CircuitRefer to Oil Temperature Gauge Malfunction
Voltage meter malfunctionVoltage Meter CircuitRefer to Voltage Meter Malfunction

METER/GAUGE

SymptomSuspected AreaSee
MIL (Check engine warning light) malfunctionMIL Circuit (for 2UR-GSE)Refer to MIL Circuit
Combination MeterRefer to REMOVAL - Step 9
Charge warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Generator (for 2UR-GSE)Refer to INSPECTION
Combination MeterRefer to REMOVAL - Step 9
Brake warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Brake Warning Light CircuitRefer to Brake Warning Light does not Come ON
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
Brake warning light does not go off.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Brake Warning Light CircuitRefer to Brake Warning Light Remains ON
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
ABS warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
ABS Warning Light CircuitRefer to ABS Warning Light does not Come ON
Combination MeterRefer to DATA LIST / ACTIVE TEST
ABS warning light does not go off.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
ABS Warning Light CircuitRefer to ABS Warning Light Remains ON
Combination MeterRefer to REMOVAL - Step 9
Airbag warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Airbag Warning Light CircuitRefer to SRS Warning Light does not Come ON
Combination MeterRefer to REMOVAL - Step 9
Airbag warning light does not go off.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Airbag Warning Light CircuitRefer to SRS Warning Light Remains ON
Combination MeterRefer to REMOVAL - Step 9
Driver side seat belt warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Driver Side Seat Belt Warning Light CircuitRefer to Driver Side Seat Belt Warning Light does not Operate
Combination MeterRefer to REMOVAL - Step 9
Front passenger side seat belt warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Front Passenger Side Seat Belt Warning Light CircuitRefer to Front Passenger Side Seat Belt Warning Light Malfunction
Combination MeterRefer to REMOVAL - Step 9
Front Passenger Side Seat Belt Warning LightRefer to REMOVAL
Door open warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Door Courtesy Light SwitchRefer to INSPECTION - Step 1
Combination MeterRefer to REMOVAL - Step 9
Fuel level warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Fuel Sender Gauge Assembly (for 2UR-GSE)Refer to INSPECTION
Combination MeterRefer to REMOVAL - Step 9
Master caution indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to DATA LIST / ACTIVE TEST
EPS warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Power Steering Warning Light CircuitRefer to PS Warning Light does not Come ON
Combination MeterRefer to REMOVAL - Step 9
EPS warning light remains on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Power Steering Warning Light CircuitRefer to PS Warning Light Remains ON
Combination MeterRefer to REMOVAL - Step 9
Tire pressure warning light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Tire Pressure Warning SystemRefer to Tire Pressure Warning Light Circuit
Combination MeterRefer to REMOVAL - Step 9

WARNING LIGHT

SymptomSuspected AreaSee
Turn indicator light does not come on.Turn Indicator Light CircuitRefer to Turn Signal Light Circuit
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
High beam indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Lighting SystemRefer to Headlight (HI-BEAM) Circuit
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
Cruise indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Cruise Indicator Light CircuitRefer to Cruise Main Indicator Light Circuit
Combination MeterRefer to REMOVAL - Step 9
Slip indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
SLIP Indicator Light CircuitRefer to Slip Indicator Light does not Come ON
Combination MeterRefer to REMOVAL - Step 9
Slip indicator light does not go off.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
SLIP Indicator Light CircuitRefer to Slip Indicator Light Remains ON
Combination MeterRefer to REMOVAL - Step 9
TRAC OFF indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
TRAC OFF indicator Light CircuitRefer to TRAC OFF Indicator Light does not Come ON
Combination MeterRefer to REMOVAL - Step 9
TRAC OFF indicator light does not go off.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
TRAC OFF indicator Light CircuitRefer to TRAC OFF Indicator Light Remains ON
Combination MeterRefer to REMOVAL - Step 9
Head (for U.S.A.) indicator light malfunctionCombination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Lighting SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
Tail (for Canada) indicator light malfunctionCombination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Lighting SystemRefer to Taillight Circuit
Combination MeterRefer to REMOVAL - Step 9
A/T shift indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
ECM (for 2UR-GSE)Refer to REMOVAL - Step 6
Combination MeterRefer to REMOVAL - Step 9
AFS OFF indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Lighting SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
Sonar indicator light does not come on. (w/ Intuitive Parking Assist System)Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Intuitive Parking Assist SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
PCS indicator light does not come on. (w/ Pre-collision System)Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Pre-collision SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
Sport indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
ECM (for 2UR-GSE)Refer to DIAGNOSTIC TROUBLE CODE CHART
Pattern Select Switch (for AA80E)Refer to Pattern Select Switch Circuit
Combination MeterRefer to REMOVAL - Step 9
Snow indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
ECM (for 2UR-GSE)Refer to DIAGNOSTIC TROUBLE CODE CHART
Pattern Select Switch (for AA80E)Refer to Pattern Select Switch Circuit
Combination MeterRefer to REMOVAL - Step 9
Front fog indicator light does not come on.Combination Meter (LED)Refer to DATA LIST / ACTIVE TEST
Front Fog Light CircuitRefer to Front Fog Light Circuit
Combination MeterRefer to REMOVAL - Step 9

INDICATOR LIGHT

SymptomSuspected AreaSee
Key reminder warning buzzer does not sound.Combination Meter (Buzzer)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9
Seat belt warning buzzer does not sound.Combination Meter (Seat Belt Buzzer ON/OFF Setting)Refer to CUSTOMIZE PARAMETERS
Combination Meter (Buzzer)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9
Shift down reject buzzer does not sound.Combination Meter (Buzzer)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9
Multi-information display warning buzzer does not sound.Combination Meter (Buzzer)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9
Engine speed limit warning buzzer does not sound.Combination Meter (Buzzer)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9

BUZZER

SymptomSuspected AreaSee
Multi-information display does not light up.Combination Meter (Multi-information Display)Refer to DATA LIST / ACTIVE TEST
Combination MeterRefer to REMOVAL - Step 9
Multi-information display does not change when pressing the DISP switch.Steering Pad SwitchRefer to INSPECTION
Spiral CableRefer to INSPECTION
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
Door open warning display does not available.Main Body ECU RH (Cowl Side Junction Block RH)
Combination MeterRefer to REMOVAL - Step 9
Maintenance required display malfunction. (for U.S.A.)Combination Meter (Oil Maintenance Resetting Procedure)Refer to INITIALIZATION
Combination MeterRefer to REMOVAL - Step 9
ODO/TRIP display does not come on.Combination MeterRefer to REMOVAL - Step 9
Outside temperature display malfunctionOutside Temperature Sensor CircuitRefer to DTC B1412/12: Ambient Temperature Sensor Circuit
Combination MeterRefer to REMOVAL - Step 9
Instantaneous fuel consumption display malfunctionECM (for 2UR-GSE)
Combination MeterRefer to REMOVAL - Step 9
Average fuel consumption display or average fuel consumption after refueling display malfunctionECM (for 2UR-GSE)
Combination MeterRefer to REMOVAL - Step 9
Driving with parking brake unreleased display malfunctionParking Brake SwitchRefer to INSPECTION - Step 1
Combination MeterRefer to REMOVAL - Step 9
A/T shift display malfunctionAutomatic Transmission System (for AA80E)Refer to HOW TO PROCEED WITH TROUBLESHOOTING
Shift Paddle Switch Circuit (for AA80E)Refer to Shift Paddle Switch Circuit
Combination MeterRefer to REMOVAL
Dynamic Radar cruise control system display malfunction (w/ Dynamic Radar Cruise Control System)Cruise Control SystemRefer to Cruise Main Indicator Light Circuit
Combination MeterRefer to REMOVAL - Step 9
Moon roof open display malfunction (w/ Sliding Roof)Sliding Roof Control SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
Steering lock display malfunctionSteering Lock SystemRefer to HOW TO PROCEED WITH TROUBLESHOOTING
Combination MeterRefer to REMOVAL - Step 9
Key system display malfunctionSmart Access System with Push-button Start (for Start Function)Refer to HOW TO PROCEED WITH TROUBLESHOOTING
Combination MeterRefer to REMOVAL - Step 9
Low oil pressure display malfunctionOil Pressure Switch (for 2UR-GSE)Refer to INSPECTION - Step 1
Combination MeterRefer to REMOVAL - Step 9
Low engine oil level display malfunctionOil Level Sensor (for 2UR-GSE)Refer to INSPECTION - Step 1
Combination MeterRefer to REMOVAL - Step 9
High engine oil temperature display malfunctionEngine Oil Temperature Sensor (for 2UR-GSE)Refer to INSPECTION
Wire Harness or Connector
Combination MeterRefer to REMOVAL - Step 9
Low washer fluid display malfunctionWasher Fluid Level Warning SwitchRefer to INSPECTION - Step 1
Combination MeterRefer to REMOVAL - Step 9
Check PCS display malfunction (w/ Pre-collision System)Pre-Collision SystemRefer to PROBLEM SYMPTOMS TABLE
Combination MeterRefer to REMOVAL - Step 9
A/T fluid temperature warning display malfunctionAutomatic Transmission System (for AA80E)Refer to DIAGNOSTIC TROUBLE CODE CHART
Combination MeterRefer to REMOVAL - Step 9
DTC (Diagnostic Trouble Code) display malfunctionTire Pressure Warning ECURefer to HOW TO PROCEED WITH TROUBLESHOOTING
Combination MeterRefer to REMOVAL - Step 9

MULTI-INFORMATION DISPLAY

Scheme 51

Scheme 51: TERMINALS OF ECU

Scheme 52

Scheme 52

Scheme 53

Scheme 53

Scheme 54

Scheme 54

Scheme 55

Scheme 55

Scheme 56

Scheme 56

Scheme 57

Scheme 57

Scheme 58

Scheme 58
  1. COMBINATION METER Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J34-1 (E2) - Body ground W-B - Body ground Ground Always Below 1 V J34-2 (FE) - Body ground BR - Body ground Ground (Fuel ground) Always Below 1 V J34-3 (GND) - Body ground W - Body ground Ground (Engine oil temperature sensor ground) Always Below 1 V J34-4 (INT) - Body ground LG - Body ground Tire pressure select switch signal Engine switch on (IG), tire pressure select display ON 8 to 15 V Engine switch on (IG), tire pressure select display off Below 1.5 V J34-5 (+S) - Body ground P - Body ground Speed signal (Output) Wheel turned slowly Pulse generation (See waveform 1) J34-6 (MPX+) - Body ground BR - Body ground Multiplex communication signal Engine switch on (IG) Pulse generation J34-7 (GAGE) - Body ground L - Body ground Engine oil temperature sensor signal Engine switch on (IG), engine oil temperature is about 0°C (32°F) 4 to 6 V Engine switch on (IG), engine oil temperature is about 100°C (212°F) 0.5 to 2.5 V J34-8 (TC) - Body ground P - Body ground Light control rheostat signal Engine switch on (IG), the light control rheostat knob is at the MAX. position (turns fully clockwise) 4 to 6 V Engine switch on (IG), the light control rheostat knob is at the MIN. position (turns fully counterclockwise) Below 1 V J34-9 (ILL+) - Body ground V - Body ground Light control rheostat signal Engine switch on (IG), combination switch is except on OFF 4 to 6 V J34-11 (B) - Body ground G - Body ground Turn indicator light signal Engine switch on (IG), turn signal LH indicator light OFF Below 1 V Engine switch on (IG), turn signal LH indicator light blinks 11 to 14 V J34-12 (IG+) - Body ground BE - Body ground Engine switch signal Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V J34-13 (ES) - Body ground W-B - Body ground Ground (Signal ground) Always Below 1 V J34-14 (ET) - Body ground Y - Body ground Ground (Rheostat ground) Always Below 1 V J34-15 (INT) - Body ground P - Body ground Tire pressure initial switch signal Engine switch on (IG), tire pressure initial message is displayed 8 to 15 V Engine switch on (IG), tire pressure initial message is not displayed Below 1.5 V J34-16 (S) - Body ground W - Body ground Tachometer signal Engine switch on (IG), engine idle speed Pulse generation (See waveform 2) J34-17 (SI) - Body ground V - Body ground Speed signal (Input) Engine switch on (IG), wheel turned slowly Pulse generation (See waveform 1) J34-18 (MPX-) - Body ground BR - Body ground Multiplex communication signal Engine switch on (IG) Pulse generation J34-19 (FR) - Body ground SB - Body ground Fuel signal Engine switch on (IG), fuel level is FULL Below 1 V Engine switch on (IG), fuel level is EMPTY 4 to 7 V J34-20 (MSSL) - Body ground Y - Body ground Steering pad switch signal Engine switch on (IG), DISP switch is not pressed 4 to 6 V Engine switch on (IG), DISP switch is pressed Below 1 V J34-21 (TR) - Body ground B - Body ground Light control rheostat signal Engine switch on (IG), the light control rheostat knob is at the MIN. position (turns fully counterclockwise). Below 1 V Engine switch on (IG), the light control rheostat knob is at the MAX. position (turns fully clockwise). 4 to 6 V J34-23 (B) - Body ground L - Body ground Battery Always 11 to 14 V J34-24 (B) - Body ground LG - Body ground Battery Always 11 to 14 V J35-3 (PBLT) - Body ground P - Body ground Front seat inner belt assembly (for passenger side) signal Sit in the front passenger seat, engine switch on (IG), front passenger side seat belt is unfastened 11 to 14 V Sit in the front passenger seat, engine switch on (IG), front passenger side seat belt is fastened Below 1 V J35-5 (RSEL) - Body ground GR - Body ground Satellite switch RH signal Engine switch on (IG), satellite switch RH is not pressed 11 to 14 V Engine switch on (IG), satellite switch RH is pressed Below 1 V J35-6 (LSEL) - Body ground BE - Body ground Satellite switch LH signal Engine switch on (IG), satellite switch LH is not pressed 11 to 14 V Engine switch on (IG), satellite switch LH is pressed Below 1 V J35-7 (SET) - Body ground V - Body ground Satellite switch ON/OFF signal Engine switch on (IG), satellite switch ON/OFF is not pressed 11 to 14 V Engine switch on (IG), satellite switch ON/OFF is pressed Below 1 V J35-9 (ILL-) - Body ground W - Body ground Illumination signal Engine switch on (IG) 11 to 14 V J35-10 (B) - Body ground R - Body ground Turn indicator light signal Engine switch on (IG), turn signal RH indicator light OFF Below 1 V Engine switch on (IG), turn signal RH indicator light blinks 11 to 14 V J35-12 (EFI) - Body ground SB - Body ground MIL (Check engine indicator light) signal Engine switch on (IG), MIL ON Below 1 V Engine switch on (IG), MIL OFF 11 to 14 V J35-15 (SW) - Body ground LG - Body ground Brake fluid level warning light signal Engine switch on (IG), brake warning light OFF 11 to 14 V Engine switch on (IG), brake warning light ON Below 1.5 V Waveform 1 (Reference) : Using an oscilloscope: OK: Item Condition Tool setting 5 V/DIV., 20 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) HINT: When the system is functioning normally, one drive wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. Waveform 2 (Reference): Using an oscilloscope: OK: Item Condition Tool setting 5 V/DIV., 10 ms./DIV. Vehicle condition Engine idle speed
  2. INTEGRATION CONTROL AND PANEL ASSEMBLY (w/o Navigation System) Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J54-3 (ILL+) - Body ground G - Body ground Illumination signal Combination switch OFF Below 1 V Combination switch Head 11 to 14 V J54-4 (IG+) - Body ground B - Body ground Engine switch signal Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V J54-5 (ACC) - Body ground BE - Body ground Engine switch signal Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V J54-8 (E) - Body ground W-B - Body ground Ground Always Below 1 V J54-10 (ILL-) - Body ground W - Body ground Illumination Signal Engine switch on (IG), combination switch Head, and light control rheostat position MAX. Pulse generation (See waveform) J54-14 (B) - Body ground LG - Body ground Battery Always 11 to 14 V Waveform (Reference) : Using an oscilloscope: OK: Item Condition Tool setting 5 V/DIV., 200 ms./DIV. Vehicle condition Engine switch on (IG), light control rheostat is in the MID. position.
  3. CLOCK ASSEMBLY (w/ Navigation System) Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J98-3 (E) - Body ground W-B - Body ground Ground Always Below 1 V J98-5 (ILL+) - Body ground G - Body ground Illumination signal Combination switch OFF Below 1 V Combination switch Head 11 to 14 V J98-6 (ACC) - Body ground BE - Body ground Engine switch signal Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V J98-7 (B) - Body ground LG - Body ground Battery Always 11 to 14 V J98-14 (ILL-) - Body ground W - Body ground Illumination signal Engine switch on (IG), combination switch Head, and light control rheostat position MAX. Pulse generation (See waveform) J98-15 (IG+) - Body ground B - Body ground Engine switch signal Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V Waveform (Reference) : Using an oscilloscope: OK: Item Condition Tool setting 5 V/DIV., 200 ms./DIV. Vehicle condition Engine switch on (IG), light control rheostat is in the MID. position.
  4. COMBINATION METER INNER CIRCUIT Combination Meter Inner Circuit Terminal No. Wire Harness Side (Symbol) J34 1 Ground (E2) 2 Fuel Sender Gauge Assembly (Sub) (FE) 3 Engine Oil Temperature Sensor (GND) 4 Tire Pressure Warning ECU (INT) 5 Each part that uses speed signal (+S) 6 Multiplex Communication Line (MPX+) 7 Engine Oil Temperature Sensor (GAGE) 8 Light Control Rheostat (TC) 9 Light Control Rheostat (ILL+) 10 - 11 Turn Signal Flasher (B) 12 GAUGE Fuse (IG+) 13 Ground (ES) 14 Light Control Rheostat (ET) 15 Tire Pressure Warning ECU (INT) 16 ECM (S) 17 Skid Control ECU (SI) 18 Multiplex Communication Line (MPX-) 19 Fuel Sender Gauge Assembly (FR) 20 Steering Pad Switch (MSSL) 21 Light Control Rheostat (TR) 22 - 23 DOME Fuse (B) 24 MPX-B Fuse (B) J35 1 - 2 - 3 Clock Assembly (PBLT) 4 - 5 Satellite Switch (RSEL) 6 Satellite Switch (LSEL) 7 Satellite Switch (SET) 8 - 9 Illumination Parts (ILL-) 10 Turn Signal Flasher (B) 11 - 12 ECM (EFI) 13 - 14 - 15 Brake Fluid Level Warning Switch (SW) 16