Meter (Diagnostic Codes & Symptom Tests): Overview — Meter (Diagnostic Codes & Symptom Tests) — Gauges & Instrument Panels

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Scheme 3: ON-VEHICLE INSPECTION

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INSPECT SPEEDOMETER Check the operation. Using a speedometer tester (calibrated chassis dynamometer), inspect the speedometer and confirm that the speedometer readings are within the acceptable range. REFERENCE: MPH Standard indication Acceptable range 20 mph 18.0 to 21.0 mph 40 mph 38.5 to 42.0 mph 60 mph 59.0 to 63.0 mph 80 mph 79.5 to 84.0 mph 100 mph 100.0 to 105.0 mph 120 mph 121.0 to 126.5 mph REFERENCE: KM/H Standard indication Acceptable range 20 km/h 21 to 25 km/h 40 km/h 41.7 to 46.2 km/h 60 km/h 62.7 to 67.2 km/h 80 km/h 83.4 to 88.4 km/h 100 km/h 104.3 to 109.3 km/h 120 km/h 125.1 to 130.6 km/h 140 km/h 145.8 to 151.8 km/h 160 km/h 166.2 to 173.2 km/h WARNING: Tire wear and excessively high or low tire pressure affect speedometer indications. Check the width of the speedometer needle deflection. Reference Below 0.3 degrees.
INSPECT OUTPUT SIGNAL OF VEHICLE SPEED SENSOR Check the output signal waveform. Remove the combination meter, but do not disconnect the connector. Start the engine. Check the signal waveform according to the condition(s) in the table below. Item Condition Terminal connection F1-17 (+S) - Body ground Tool setting 5 V/DIV, 20 msec/DIV Vehicle condition Driving at approx. 20 km/h (12.4 mph) OK Waveform is as shown in the illustration. HINT: As the vehicle speed increases, the cycle of the signal waveform narrows.
INSPECT TACHOMETER Check the operation. Connect a Techstream to the DLC3. Start the engine. Operate the Techstream according to the display and select "Data List". Refer to «DATA LIST / ACTIVE TEST»(ref-388784-S07703883922011031100000) . Body Electrical / Combination Meter / Data List: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine RPM Engine speed Min.: 0 Max.: 12,750 Approximately same as actual engine speed Unit: rpm Compare the engine speed displayed on the tester with the tachometer reading. REFERENCE Standard indication (rpm) Acceptable range (rpm) Data in ( ) are for reference 700 630 to 770 1,000 (900 to 1,100) 2,000 (1,850 to 2,150) 3,000 2,800 to 3,200 4,000 (3,800 to 4,200) 5,000 4,800 to 5,200 6,000 (5,750 to 6,250) 7,000 6,700 to 7,300
INSPECT FUEL RECEIVER GAUGE Disconnect the L7 fuel sender gauge connector. Check the fuel receiver gauge operation when the ignition switch is turned on. OK No. 1 segment flashes. Connect terminals 2 and 3 on the wire harness side connector of the fuel sender gauge. Check the fuel receiver gauge operation when the ignition switch is turned from off to on. OK All segments, from No. 1 to No. 8, illuminate. Reconnect the fuel sender gauge connector.
INSPECT FUEL LEVEL WARNING LIGHT Disconnect the L7 fuel sender gauge connector. Turn the ignition switch on and check that the fuel receiver gauge No. 1 segment flashes when the fuel volume is less than 6.3 liters (less then 15 % of the total fuel tank capacity.) OK Fuel Volume Flashing Speed (Interval) 6.3 liters (Less than 15 % of total fuel tank capacity) Flashes slowly (1.2 seconds) 4.2 liters (Less than 10 % of total fuel tank capacity) Flashes quickly (0.6 seconds)
INSPECT BRAKE WARNING LIGHT Inspect the parking brake warning light. Disconnect the F23 parking brake switch connector. Turn the ignition switch on. Ground the terminal of the wire harness side connector, then check the parking brake warning light. OK Brake warning light illuminates. Reconnect the parking brake switch connector. Inspect the brake fluid level warning light. Disconnect the A8 brake fluid level warning switch connector. Turn the ignition switch on. Connect a terminal to the other terminal of the wire harness side connector, then check the brake fluid level warning light. OK Brake warning light illuminates. Reconnect the brake fluid level warning switch connector.
INSPECT BRAKE FLUID LEVEL WARNING SWITCH Turn the ignition switch off. Remove the reservoir filler cap and strainer. Disconnect the A8 brake fluid level warning switch connector. Measure the resistance according to the value(s) in the table below. HINT: A float is located inside the reservoir. Its position can be changed by increasing or decreasing the level of brake fluid. Standard resistance Tester Connection Switch Condition Specified Condition 1 - 2 Switch off (Float up) 10 kohms or higher 1 - 2 Switch on (Float down) Below 1 ohms HINT: If there is no problem after finishing the above check, adjust the brake fluid level to the MAX level.
INSPECT OIL PRESSURE WARNING LIGHT Disconnect the C16 engine oil pressure switch connector. Turn the ignition switch on. Ground the terminal of the wire harness side connector, then check the engine oil pressure warning light. OK Engine oil pressure warning light illuminates.
INSPECT ENGINE COOLANT TEMPERATURE WARNING LIGHT (FOR HOT INDICATOR) Disconnect the C18 engine coolant temperature sensor connector. Turn the ignition switch on. Connect the terminal to the other terminal of the wire harness side connector, then check the engine coolant temperature warning light. OK Engine coolant temperature warning light illuminates. Reconnect the engine coolant temperature sensor connector. NOTE: DTCs may have been set. Check for DTCs and clear any that have been set.
INSPECT ENGINE COOLANT TEMPERATURE INDICATOR LIGHT (FOR COOL INDICATOR) Disconnect the C18 engine coolant temperature sensor connector. Turn the ignition switch on. OK Engine coolant temperature indicator light illuminates. Reconnect the engine coolant temperature sensor connector. NOTE: DTCs may have been set. Check for DTCs and clear any that have been set.

DESCRIPTION

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

DTC No.	DTC Detection Condition	Trouble Area
B1500	When combination meter detects fuel sender gauge malfunction	Wire harness Combination meter assembly Fuel sender gauge assembly

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Scheme 11: WIRING DIAGRAM

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Scheme 12: PROCEDURE

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READ VALUE USING TECHSTREAM (FUEL SENDER GAUGE) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Operate the Techstream according to the display and select "Active Test". Refer to «DATA LIST / ACTIVE TEST»(ref-388784-S07703883922011031100000) . Body Electrical / Combination Meter / Data List: Tester Display 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, Imp, qts) OK Fuel value displayed on tester is approximately same as needle indication. NG --> See step 2 OK --> See step 4
INSPECT FUEL SENDER GAUGE ASSEMBLY Remove the fuel sender gauge assembly. Refer to «REMOVAL»(ref-388742-S36527371672011031100000) . Check that the float moves smoothly between E and F. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1 - 2 Float level is F 12 to 18 ohms 1 - 2 Float level is E 405 to 415 ohms Reinstall the fuel sender gauge assembly. NG --> See step 5 OK: Go to next step
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - FUEL SENDER GAUGE ASSEMBLY) Disconnect the F2 combination meter assembly connector. Disconnect the L7 fuel sender gauge assembly. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connector Condition Specified Condition F2-9 (L) - L7-2 (FS) Always Below 1 ohms F2-9 (L) or L7-2 (FS) - Body ground Always 10 kohms or higher L7-3 (FE) - Body ground Always Below 1 ohms Reconnect the fuel sender gauge assembly connector. Reconnect the combination meter assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
REPLACE FUEL SENDER GAUGE ASSEMBLY. Refer to «REMOVAL»(ref-388742-S36527371672011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)

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

DTC No.	DTC Detection Conditions	Trouble Areas
U0100	When either of following conditions detected: Vehicle speed 5 km/h (3.1 mph) or more and IG voltage 10.5 V or more No communication with ECM continues for 3 seconds or more (No communication to ECM or skid control ECU continues for 60 seconds or more)	CAN communication system ECM

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Scheme 14: WIRING DIAGRAM

The combination meter assembly receives signal from skid control ECU through the CAN communication system.

DTC No.	DTC Detection Conditions	Trouble Areas
U0129	When either of following conditions detected: 15 seconds have elapsed since engine started and IG voltage 10.5 V or more No communication with skid control ECU continues for 3 seconds or more (No communication with ECM or skid control ECU continues for 60 seconds or more)	ABS and traction actuator (Skid control ECU) CAN communication system

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Scheme 15: WIRING DIAGRAM

This circuit is the power source circuit for the combination meter. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission. The constant power source is mainly used as a backup power source of the meter CPU, however, it is also used for communication. If a voltage of 12 V is not applied to terminal IG2 when the ignition switch is turned on, the indicator will not operate.

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Scheme 16: WIRING DIAGRAM

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Scheme 17: PROCEDURE

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INSPECT FUSES (MET, ECU-B, AM2) Remove the MET fuse from the main body ECU. Remove the ECU-B and AM2 fuse from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition METER fuse Always Below 1 ohms ECU-B fuse Always Below 1 ohms AM2 fuse Always Below 1 ohms Reinstall the fuses. NG --> REPLACE FUSE OK: Go to next step
INSPECT INTEGRATION NO. 2 RELAY (IG2 RELAY) Remove the integration relay from the engine room relay block. Refer to «REMOVAL»(ref-388735-S08410464852011031100000) . Measure the resistance to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition 1B-1 - 1B-4 Always 10 kohms or higher Battery voltage applied to terminals 1B-2 and 1B-3 Below 1 ohms Reinstall the integration relay. NG --> See step 5 OK: Go to next step
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND) Disconnect the F1 combination meter assembly connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition F1-2 (ECUB) - Body ground Always 11 to 14 V F1-1 (IG2) - Body ground Ignition switch on 11 to 14 V Measure the resistance according to the value in the table below. Standard resistance Tester Connection Condition Specified Condition F1-13 (ET) - Body ground Always Below 1 ohms Reconnect the combination meter assembly connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
REPLACE INTEGRATION NO. 2 RELAY. Refer to «REMOVAL»(ref-388735-S08410464852011031100000)

The meter ECU receives vehicle speed signals from the skid control ECU via the CAN communication lines. The vehicle speed sensor detects the voltage that varies according to the vehicle speed. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pules of the voltage.

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 amount of fuel remaining in the fuel tank.

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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Scheme 20: WIRING DIAGRAM

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Scheme 22: PROCEDURE

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CHECK BUZZERS (SEAT BELT, TAILLIGHT REMINDER, PARKING BRAKE) Check that the seat belt, taillight reminder and parking brake warning buzzers sound. Result Result Proceed to Seat belt warning buzzer does not sound (where equipped with seat belt warning system) A Taillight reminder warning buzzer does not sound (Meter illuminations normal) B Parking brake warning buzzer does not sound C No warning buzzers sound D HINT: Seat belt warning buzzer on: Ignition switch is on, driver or front passenger seat belt is unfastened, and vehicle speed is 20 km/h (12.4 mph) or more. Taillight reminder warning buzzer on: Ignition switch is off, taillight relay switch is on, and driver side door is open. Parking brake warning buzzer on: Ignition switch is on, parking brake is operating, and vehicle speed is 5 km/h (3.1 mph) or more. D --> See step 17 C --> See step 12 B --> See step 6 A: Go to next step
CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No CAN communication system DTCs are output A CAN communication system DTCs are output B B --> See step 18 A: Go to next step
CONFIRM DTC OUTPUT (BRAKE CONTROL SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No brake control DTCs are output A Brake control system DTCs are output B B --> See step 19 A: Go to next step
CONFIRM DTC OUTPUT (SUPPLEMENTAL RESTRAINT SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No SRS DTCs are output A SRS DTCs are output B B --> See step 20 A: Go to next step
CONFIRM DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No occupant classification system DTCs are output A Occupant classification system DTCs are output B B --> See step 21 A --> See step 22
CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No CAN communication system DTCs are output A CAN communication system DTCs are output B B --> See step 23 A: Go to next step
READ VALUE USING TECHSTREAM (FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Operate the Techstream according to the display and select "Data List". Refer to «DATA LIST / ACTIVE TEST»(ref-388784-S07703883922011031100000) . Body Electrical / Main Body / Data List: Tester Display 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 --> See step 10 OK: Go to next step
INSPECT COMBINATION METER ASSEMBLY Disconnect the F2 combination meter assembly connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Switch Condition Specified Condition F2-7 (ILL+) - Body ground Headlight dimmer switch Tail or Head position 11 to 14 V Reconnect the combination meter assembly connector. NG --> See step 9 OK --> See step 24
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - MAIN BODY ECU) Disconnect the F2 combination meter assembly connector. Disconnect the 4Q main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F2-7 (ILL+) - 4Q-2 Always Below 1 ohms F2-7 (ILL+) or 4Q-2 - Body ground Always 10 kohms or higher Reconnect the combination meter assembly connector. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 25
INSPECT FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE) Disconnect the L4 front door courtesy light switch LH connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition L4-1 - Body ground Not pushed (ON) Below 1 ohms L4-1 - Body ground Pushed (OFF) 10 kohms or higher Reconnect the front door courtesy light switch LH connector. NG --> See step 26 OK: Go to next step
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH - MAIN BODY ECU) Disconnect the L4 front door courtesy light switch connector. Disconnect the 4A main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition L4-1 - 4A-21 (DCTY) Always Below 1 ohms L4-1 or 4A-21 (DCTY - Body ground) Always 10 kohms or higher 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
CONFIRM DTC OUTPUT (CAN COMMUNICATION SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No CAN communication system DTCs are output A CAN communication system DTCs are output B B --> See step 27 A: Go to next step
CONFIRM DTC OUTPUT (BRAKE CONTROL SYSTEM) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Check for DTCs and note any codes that are output. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Clear the DTC. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-388784-S31557478092011031100000) . Result Result Proceed to No brake control DTCs are output A Brake control system DTCs are output B B --> See step 28 A: Go to next step
READ VALUE USING TECHSTREAM (PARKING BRAKE SWITCH) Connect a Techstream to the DLC3. Turn the ignition switch on and turn the tester on. Operate the Techstream according to the display and select "Data List". Refer to «DATA LIST / ACTIVE TEST»(ref-388784-S07703883922011031100000) . Body / Main body / Data List: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Parking Brake SW Parking brake switch signal ON / OFF ON: Parking brake lever is pulled OFF: Parking brake lever is lowered - NG --> See step 15 OK --> See step 29
INSPECT PARKING BRAKE SWITCH Remove the parking brake switch. Refer to «REMOVAL»(ref-388785-S29020157822011031100000) . Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Switch Condition Specified Condition 1 - Body ground Parking brake switch on (Switch pin released) Below 1 ohms Parking brake switch off (Switch pin pushed in) 10 kohms or higher Reinstall the parking brake switch. NG --> See step 30 OK: Go to next step
CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH - MAIN BODY ECU) Disconnect the F23 parking brake switch connector. Disconnect the 4C main body ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F23-1 - 4C -2 (PKB) Always Below 1 ohms F23-1 or 4C -2 (PKB) - Body ground Always 10 kohms or higher Reconnect the parking brake switch connector. Reconnect the main body ECU connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE MAIN BODY ECU
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388782-S09945294852011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388763-S19508479222011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388787-S32764356412011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388797-S07344878272011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388782-S09945294852011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
GO TO LIGHTING SYSTEM (TAILLIGHT ILLUMINATE). Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388783-S18656258832011031100000)
REPLACE FRONT DOOR COURTESY LIGHT SWITCH (DRIVER SIDE). Refer to «REMOVAL»(ref-388749-S16424327992011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388782-S09945294852011031100000)
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-388763-S19508479222011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
REPLACE PARKING BRAKE SWITCH. Refer to «REMOVAL»(ref-388785-S29020157822011031100000)

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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Scheme 28: WIRING DIAGRAM

Scheme 29

Scheme 29: PROCEDURE

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READ VALUE USING TECHSTREAM (RHEOSTAT) Connect a Techstream to the DLC3. Turn the ignition switch on and the tester on. Operate the Techstream according to the display and select "Data List". Refer to «DATA LIST / ACTIVE TEST»(ref-388784-S07703883922011031100000) . Body Electrical / Combination Meter / Data List: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Tail Cancel SW Tail cancel switch ON or OFF ON: Headlight dimmer switch (Light control switch) --> OFF OFF: Headlight dimmer switch (Light control switch) --> TAIL or HEAD - Rheostat value Rheostat volume Min.: 0 Max.: 100 Light control rheostat switch is dark (0) --> bright (100) Unit: % OK Light brightness can be changed within the specified range by actual operation. NG --> See step 2 OK --> See step 6
INSPECT FUSE (PANEL1) Remove the PANEL1 fuse from the main body ECU. Measure the resistance according to the value in the table below. Standard resistance Tester Connection Condition Specified Condition PANEL1 fuse Always Below 1 ohms Reinstall the PANEL1 fuse. NG --> REPLACE FUSE OK: Go to next step
CHECK HARNESS AND CONNECTOR (PANEL1 FUSE - LIGHT CONTROL RHEOSTAT) Disconnect the F28 light control rheostat connector. Measure the voltage according to the value in the table below. Standard voltage Tester Connection Switch Condition Specified Condition F28-5 (T) - Body ground Ignition switch on, light control switch on (TAIL or HEAD) 11 to 14 V Reconnect the light control rheostat connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - LIGHT CONTROL RHEOSTAT) Disconnect the F2 combination meter assembly connector. Disconnect the F28 light control rheostat connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition F28-5 (T) - F2-7 (ILL+) Always Below 1 ohms F28-2 (RV) - F2-6 (ILL-) Always Below 1 ohms F28-8 (TC) - F2-8 (TC) Always Below 1 ohms F28-3 (E) - Body ground Always Below 1 ohms F28-5 (T) or F2-7 (ILL+) - Body ground Always 10 kohms or higher 30-2 (RV) or F2-6 (ILL-) - Body ground Always 10 kohms or higher F28-8 (TC) or F2-8 (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
INSPECT LIGHT CONTROL RHEOSTAT Remove the light control rheostat but without disconnecting the connector. Turn the ignition switch on. Using an oscilloscope, check the signal waveform of the light control rheostat. Item Contents Terminal connection F28-2 (RV) - Body ground Tool setting 5V/DIV, 50 ms /DIV Vehicle condition Ignition switch on OK Waveform is as shown in the illustration. HINT: Duty ratio changes as the illumination dims. (A becomes longer) Reinstall the light control rheostat. NG --> See step 8 OK --> See step 7
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
REPLACE COMBINATION METER ASSEMBLY. Refer to «REMOVAL»(ref-388748-S40821231082011031100000)
REPLACE LIGHT CONTROL RHEOSTAT. Refer to «REMOVAL»(ref-388748-S24465956282011031100000)

The meter CPU receives vehicle speed signals from this circuit. The vehicle speed sensor detects the voltage that varies according to the vehicle speed. The skid control ECU supplies power to the vehicle speed sensor. The skid control ECU detects vehicle speed signals based on the pulses of the voltage. The skid control ECU transmits vehicle speed signals as pulses to the meter CPU. A voltage of 12 V is output from the combination meter assembly and then input to the skid control ECU. The signal is changed to a pulse signal at the transistor in the combination meter assembly.

A voltage of 12 V or 5 V is output from each ECU or relay and then input to the combination meter assembly.

Each ECU controls the respective system based on the pulse signal.