Meter: Overview Scion xB II

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1. METER GAUGE AND WARNING / INDICATOR Gauge: GAUGE CHART Item Detail Speedometer Based on signals received from the wheel speed sensor, ABS and traction actuator (skid control ECU) calculates vehicle speed and transmits data to meter (CAN line) Tachometer ECM transmits engine speed to meter (CAN line) Water Temperature Gauge ECM transmits water temperature signal to meter (CAN line) Fuel Gauge Fuel sender gauge transmits signal to meter (Direct line) Warning / Indicator: WARNING/INDICATOR CHART Item Detail TURN SIGNAL Receives turn signal from flasher relay (Direct line) HAZARD SIGNAL Receives hazard warning signal from flasher relay (Direct line) BEAM Receives high beam signal from DIMMER relay (Direct line) CHARGE Receives malfunction charge signal from ECM (CAN line and direct line) MIL Receives malfunction check signal from ECM (Direct line) DOOR Open door indicator illuminates when receiving signal from main body ECU (CAN line) DRIVER'S SEAT BELT Receives driver seat belt signal (unfastened) from center airbag sensor (CAN line) BRAKE Receives parking brake switch signal from main body ECU (CAN line) Receives brake fluid level warning signal from brake fluid level warning switch (Direct line) Receives malfunction signal from ABS and traction actuator (skid control ECU) (CAN line) CRUISE Receives malfunction signal from ECM (CAN line) SRS Receives malfunction signal from center airbag sensor (CAN line) SLIP Receives signal from ABS and traction actuator (skid control ECU) (CAN line) (Flashes when downhill assist control and hill-start assist control operate) ABS Receives malfunction signal from ABS and traction actuator (skid control ECU) (CAN line) VSC OFF Receives VSC control off signal or VSC system fail-safe control signal from ABS and traction actuator (skid control ECU) (CAN line) TAIL Receives headlight dimmer switch condition signal from T-LP relay (Direct line) EPS Receives malfunction signal from power steering ECU (CAN line) TIRE PRESSURE Receives malfunction signal from tire pressure warning ECU (Direct line) OIL PRESSURE Receives warning signal from engine oil pressure switch (Direct line) MAINT REQD Illuminates when oil is changed and vehicle is driven about 5,000 miles (8,000 km) Blinks when oil is changed and vehicle is driven about 4,500 miles (7,242 km) to 5,000 miles (8,000 km) FUEL Receives remaining fuel signal from fuel sender gauge (Direct line) Warning / Buzzer: WARNING/BUZZER CHART Item Detail KEY Reminder Buzzer ON Ignition switch off, key inserted, and door open Seat belt warning Buzzer ON Receives malfunction signal from center airbag sensor assembly LIGHT Reminder Buzzer ON When ignition switch off, light control switch in TAIL position, and driver side door open VSC Buzzer ON When skid control ECU detects strong understeer or oversteer
2. LIQUID CRYSTAL DISPLAY (LCD)

DESCRIPTION

This DTC is output when the combination meter detects the fuel sender gauge malfunction via the CAN.

DTC DETECTION CONDITION CHART

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1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER OR TECHSTREAM (FUEL RECEIVER GAUGE) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester ON. Operate the intelligent tester or Techstream according to the display and select "ACTIVE TEST" or "Active Test" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Combination Meter / ACTIVE TEST: BODY / COMBINATION METER / ACTIVE TEST Item Test Details Diagnostic Note FUEL GAUGE EMPTY / 1/2 / FULL Value selected during ACTIVE TEST is displayed Techstream Body Electrical / Combination Meter / Active Test: BODY ELECTRICAL / COMBINATION METER / ACTIVE TEST Item Test Details Diagnostic Note Fuel Meter Operation EMPTY / 1/2 / FULL Value selected during Active Test is displayed OK: Needle indication is normal. NG: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ) OK: Go to next step
2. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (FUEL SENDER GAUGE) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester ON. Operate the intelligent tester or Techstream according to the display and select "ACTIVE TEST" or "Active Test" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Combination Meter / ACTIVE TEST: BODY / COMBINATION METER / ACTIVE TEST Item Measurement Item / Range Normal Condition Diagnostic Note FUEL GAUGE Fuel sender gauge input Min.: 0 (0) Max.: 127.5 (134.7,112.2) Fuel sender input value Unit: Liters (US qts, lmp, qts) Techstream Body Electrical / Combination Meter / Active Test: BODY ELECTRICAL / COMBINATION METER / ACTIVE TEST Item Measurement Item / Range Normal Condition Diagnostic Note Fuel Input Fuel sender gauge input Min.: 0 (0) Max.: 127.5 (134.7, 112.2) Fuel sender input value Unit: Liters (US qts, lmp, qts) OK: Fuel value displayed on tester is approximately same as needle indication. NG: Go to step 3 OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) )
3. INSPECT FUEL SENDER GAUGE ASSEMBLY Remove the fuel sender gauge assembly. Check that the float position is between E and F. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 1 - 2 Float level is F 13.5 to 16.5 ohms 1 - 2 Float level is 1/2 195.3 to 221.3 ohms 1 - 2 Float level is E 405.5 to 414.5 ohms Reinstall the fuel sender gauge assembly. NG : REPLACE FUEL SENDER GAUGE ASSEMBLY (See «REMOVAL»(/scion/xb/ii-2007-2010/remont/fuel-system/#2az-fe-fuel) ) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - FUEL SENDER GAUGE) Disconnect the C37 combination meter assembly connector. Disconnect the H13 fuel sender gauge assembly. Measure the resistance according to the value(s) in the table below Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connector Condition Specified Condition C37-17 (L) - H13-2 Always Below 1 ohms C37-22 (E) - H13-3 Always Below 1 ohms C37-24 (ET) - Body ground Always Below 1 ohms C37-17 (L) or H13-2 - Body ground Always 10 kohms or higher C37-22 (E) or H13-3 - Body ground Always 10 kohms or higher Reconnect the fuel sender gauge assembly connector. Reconnect the combination meter assembly connector. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) )

The combination meter assembly and the ECM exchange signals through the CAN communication system.

DTC DETECTION CONDITIONS CHART

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The combination meter assembly receives signal from ABS and traction actuator (skid control ECU) through the CAN communication system.

DTC DETECTION CONDITIONS CHART

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This circuit provides power to the combination meter assembly.

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1. INSPECT FUSE (METER, ECU-B, IG2) Remove the METER fuse from the main body ECU. Remove the ECU-B and IG2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition METER fuse Always Below 1 ohms ECU-B fuse Always Below 1 ohms IG2 fuse Always Below 1 ohms Reinstall the fuses. NG : REPLACE FUSE OK: Go to next step
2. INSPECT INTEGRATION RELAY (IG2 RELAY) Remove the integration relay from the engine room relay block (See «REMOVAL»(/scion/xb/ii-2007-2010/remont/testing-diagnostics/#2az-fe-engine-control-system) ). Measure the resistance to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition 1E-1 - 1A-4 Always 10 kohms or higher Battery voltage applied to terminals 1A-2 and 1A-3 Below 1 ohms Reinstall the integration relay. NG : REPLACE INTEGRATION RELAY (See «REMOVAL»(/scion/xb/ii-2007-2010/remont/testing-diagnostics/#2az-fe-engine-control-system) ) OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (COMBINATION METER - BATTERY AND BODY GROUND) Disconnect the C37 meter connector. Measure the voltage according to the value(s) in the table below. Standard voltage TESTER CONNECTION SPECIFIED CONDITION VOLTAGE CHART Tester Connection Condition Specified Condition C37-1 (B) - Body ground Always 11 to 14 V C37-2 (IG+) - Body ground Ignition switch on (IG) 11 to 14 V Measure the resistance according to the value in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION RESISTANCE CHART Tester Connection Condition Specified Condition C37-24 (ET) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) )

The combination meter assembly controls the speedometer in accordance with vehicle speed signals from the speedometer sensor.

The combination meter assembly controls the tachometer in accordance with engine speed signals from the ECM through the CAN communication system.

The combination meter assembly controls the fuel receiver gauge in accordance with the resistance of the fuel sender gauge that varies depending on the fuel remaining amount in the fuel tank.

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The ECM sends engine coolant temperature sensor signals to the combination meter assembly via CAN communication. Then the combination meter assembly indicates the engine coolant temperature.

The combination meter assembly controls the buzzers in accordance with signals from the center airbag sensor assembly, the main body ECU and the taillight relay.

HINT

The main body ECU receives signals from the center airbag sensor assembly and transmits them to the combination meter assembly.

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1. CHECK BUZZER (SEAT BELT, KEY REMINDER, TAILLIGHT REMINDER) Check that the seat belt, key reminder and taillight reminder warning buzzers sound. Result RESULT CHART Result Proceed to Seat belt warning buzzer does not sound (where equipped with seat belt warning system) A Key reminder warning buzzer does not sound (where equipped with key reminder warning system) B Taillight reminder warning buzzer does not sound (Meter illuminations normal) C No warning buzzers sound D HINT: Seat belt warning buzzer on: Ignition switch is on (IG), driver or front passenger seat belt is unfastened, and vehicle speed is 12.4mph (20 km/h) or more. Key reminder warning buzzer on: Ignition switch is off, key is in ignition key cylinder, and driver side door is open. Taillight reminder warning buzzer on: Ignition switch is off, taillight relay switch is on (IG), and driver side door is open. B: Go to step 5 C: Go to step 11 D: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ) A: Go to next step
2. CHECK SUPPLEMENTAL RESTRAINT SYSTEM Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester on. Enter the following menus: Intelligent tester - Select: DIAGNOSIS / OBD / MOBD / CENTER AIRBAG SENSOR / DTC INFO Techstream - Select: Body / Center airbag sensor / Trouble Codes. Result RESULT CHART Result Proceed to No SRS DTCs are output A SRS DTCs are output B B: Go TO «SUPPLEMENTAL RESTRAINT SYSTEM»(/scion/xb/ii-2007-2010/remont/airbag/#supplemental-restraint-system) . A: Go to next step
3. CHECK OCCUPANT CLASSIFICATION SYSTEM Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester on. Enter the following menus: Intelligent tester - Select: DIAGNOSIS / OBD / MOBD / OCCUPANT DETECTION / DTC INFO. Techstream - Select: Body / Occupant Detection / Trouble Codes. Result RESULT CHART Result Proceed to No occupant classification system DTCs are output A Occupant classification system DTCs are output B B: Go TO «OCCUPANT CLASSIFICATION SYSTEM»(/scion/xb/ii-2007-2010/remont/airbag/#supplemental-restraint-system) . A: Go to next step
4. CHECK KEY REMINDER FUNCTION Ignition switch is off. Key is in ignition key cylinder. Driver side door is open. OK: Key reminder warning buzzer ON. NG: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ). OK: REPLACE MAIN BODY ECU (See «REMOVAL»(ref-289758-S04540263592008070700000) )
5. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE)) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester on. Operate the intelligent tester or Techstream according to the display and select "DATA LIST" or "Data List" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Main Body / DATA LIST: BODY / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note D DOR CTY SW Driver side door courtesy light switch signal ON or OFF ON: Driver side door is open OFF: Driver side door is closed - Techstream Body Electrical / Main Body / Data List: BODY ELECTRICAL / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy light switch signal ON or OFF ON: Driver side door is open OFF: Driver side door is closed - NG: Go to step 9 OK: Go to next step
6. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (UNLOCK WARNING SWITCH) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester on. Operate the intelligent tester or Techstream according to the display and select "DATA LIST" or "Data List" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Main Body / DATA LIST: BODY / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note KEY UNLK WRN SW Unlock warning switch signal ON or OFF ON: Key is in ignition key cylinder OFF: No key is in ignition key cylinder - Techstream Body Electrical / Main Body / Data List: BODY ELECTRICAL / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note Key Unlock Warning SW Unlock warning switch signal ON or OFF ON: Key is in ignition key cylinder OFF: No key is in ignition key cylinder - NG: Go to step 7 OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ).
7. INSPECT UNLOCK WARNING SWITCH ASSEMBLY Remove the unlock warning switch assembly (See «REMOVAL»(ref-289775-S20485330292008070700000) ). Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition 1 - 2 Not pushed 10 kohms or higher 1 - 2 Pushed Below 1 ohms Reinstall the unlock warning switch assembly (See «INSTALLATION»(ref-289775-S28600373062008070700000) ). NG: REPLACE UNLOCK WARNING SWITCH ASSEMBLY (See «REMOVAL»(ref-289775-S20485330292008070700000) ). OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU) Disconnect the C6 unlock warning switch assembly connector Disconnect the 2E main body ECU connector Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition C6-1 - 2E-23 (KSW) Always Below 1 ohms C6-2 - Body ground Always Below 1 ohms Reconnect the unlock warning switch assembly connector Reconnect the main body ECU connector. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE MAIN BODY ECU (See «REMOVAL»(ref-289758-S04540263592008070700000) ).
9. INSPECT FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) Disconnect the H1 front door courtesy light switch LH connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition H1-1 - Body ground Not pushed (ON) Below 1 ohms H1-1 - Body ground Pushed (OFF) 10 kohms or higher Reconnect the front door courtesy light switch LH connector. NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) (See «REMOVAL»(ref-289762-S20463811592008070700000) ). OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) Disconnect the H1 front door courtesy light switch connector. Disconnect the 2A main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition H1-1 - 2A-21 (DCTY) Always Below 1 ohms Reconnect the front door courtesy light switch connector. Reconnect the main body ECU connector. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE MAIN BODY ECU (See «REMOVAL»(ref-289758-S04540263592008070700000) ).
11. READ VALUE OF INTELLIGENT TESTER OR TECHSTREAM (FRONT DOOR COURTESY SWITCH (DRIVER SIDE)) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and turn the tester on. Operate the intelligent tester or Techstream according to the display and select "DATA LIST" or "Data List" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Main Body / Data List: BODY / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note D DOR CTY SW Driver side door courtesy light switch signal ON or OFF ON: Driver side door is open OFF: Driver side door is closed - Techstream Body Electrical / Main Body / Data List: BODY ELECTRICAL / MAIN BODY / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy light switch signal ON or OFF ON: Driver side door is open OFF: Driver side door is closed - NG: Go to step 12 OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ).
12. INSPECT FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) Disconnect the H1 front door courtesy light switch LH connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition H1-1 - Body ground Not pushed (ON) Below 1 ohms H1-1 - Body ground Pushed (OFF) 10 kohms or higher Reconnect the front door courtesy light switch LH connector NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) (See «REMOVAL»(ref-289762-S20463811592008070700000) ). OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) Disconnect the H1 front door courtesy light switch connector. Disconnect the 2A main body ECU connector. Measure the resistance according to the value in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition H1-1 - 2A-21 (DCTY) Always Below 1 ohms Reconnect the front door courtesy light switch connector. Reconnect the main body ECU connector. NG: REPLACE FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) (See «REMOVAL»(ref-289762-S20463811592008070700000) ). OK: REPLACE MAIN BODY ECU (See «REMOVAL»(ref-289758-S04540263592008070700000) ).

The combination meter assembly controls the combination meter illumination in accordance with the light control signal from the light control rheostat.

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1. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (RHEOSTAT) Connect an intelligent tester or a Techstream to the DLC3. Turn the ignition switch on (IG) and the tester on. Operate the intelligent tester or Techstream according to the display and select "DATA LIST" or "Data List" (See «DATA LIST / ACTIVE TEST»(ref-289740-S15223829392008070700000) ). Intelligent tester Body / Combination Meter / Data List: BODY / COMBINATION METER / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note TAIL CANCEL SW Tail cancel switch ON or OFF ON: Headlight dimmer switch (Light control switch) --> TAIL or HEAD OFF: Headlight dimmer switch (Light control switch) --> OFF - RHEOSTAT Rheostat volume Min.: 0 Max.: 100 Light control rheostat switch is dark --> bright Unit: % Techstream Body Electrical / Combination Meter / Data List: BODY ELECTRICAL / COMBINATION METER / DATA LIST Item Measurement Item / Range Normal Condition Diagnostic Note Tail Cancel SW Tail cancel switch ON or OFF ON: Headlight dimmer switch (Light control switch) --> TAIL or HEAD OFF: Headlight dimmer switch (Light control switch) --> OFF - Rheostat value Rheostat volume Min.: 0 Max.: 100 Light control rheostat switch is dark --> bright Unit: % OK: Light brightness can be changed within the specified range by actual operation. NG: Go to step 2 OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ).
2. INSPECT FUSE (PANEL) Remove the PANEL fuse from the main body ECU. Measure the resistance according to the value in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition PANEL fuse Always Below 1 ohms Reinstall the PANEL fuse. NG: REPLACE FUSE OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (PANEL FUSE - LIGHT CONTROL RHEOSTAT) Disconnect the C30 light control rheostat connector. Measure the voltage according to the value in the table below. Standard voltage TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Switch Condition Specified Condition C30-5 (T) - Body ground Ignition switch on (IG), light control switch on (TAIL) 11 to 14 V Reconnect the light control rheostat connector. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - LIGHT CONTROL RHEOSTAT) Disconnect the C37 combination meter assembly connector. Disconnect the C30 light control rheostat connector. Measure the resistance according to the value(s) in the table below. Standard resistance TESTER CONNECTION SPECIFIED CONDITION CHART Tester Connection Condition Specified Condition C30-5 (T) - C37-13 (ILL+) Always Below 1 ohms C30-2 (RV) - C37-6 (ILL-) Always Below 1 ohms C30-8 (TC) - C37-14 (TC) Always Below 1 ohms C30-3 (E) - Body ground Always Below 1 ohms C30-5 (T) or C37-13 (ILL+) - Body ground Always 10 kohms or higher 30-2(RV) or C37-6(ILL-) - Body ground Always 10 kohms or higher C30-3 (E) or C37-14 (TC) - Body ground Always 10 kohms or higher Reconnect the combination meter assembly connector. Reconnect the light control rheostat connector. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT LIGHT CONTROL RHEOSTAT Remove the light control rheostat but without disconnecting the connector. Turn the ignition switch on (IG). Using an oscilloscope, check the signal waveform of the light control rheostat. SIGNAL WAVEFORM REFERENCE Item Contents Terminal connection C30-2 (RV) - Body ground Tool setting 5V/DIV, 50 ms /DIV Vehicle condition Ignition switch on (IG) OK: Waveform is (Scheme 93) HINT: Duty ratio changes as the illumination dims. (A becomes longer) Reinstall the light control rheostat. NG: REPLACE LIGHT CONTROL RHEOSTAT (See «REMOVAL»(ref-289740-S32212947212008070700000) ). OK: REPLACE COMBINATION METER ASSEMBLY (See «REMOVAL»(ref-289740-S22813805032008070700000) ).

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY (See «REMOVAL»(/scion/xb/ii-2007-2010/remont/gauges-instrument-panels/#instrument-panel) ).
3. REMOVE COMBINATION METER ASSEMBLY Remove the 4 screws and remove the combination meter. Separate the wire harness. Disconnect the 2 connectors.

See also:
• MIL CIRCUIT
• SRS WARNING LIGHT DOES NOT COME ON
• REMOVAL
• REMOVAL