DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
CHECK ANTI-LOCK BRAKE SYSTEM (VEHICLE SPEED)
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SPEEDOMETER)
READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED)
READ VALUE USING INTELLIGENT TESTER (WHEEL SPEED SENSOR)
METER / GAUGE SYSTEM - Speedometer Malfunction
DESCRIPTION
The combination meter receives vehicle speed signals from the skid control ECU via the CAN line. 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.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK CAN COMMUNICATION SYSTEM |
Check for DTCs ().
Result| Result | Proceed to |
| CAN communication DTC is not output | A |
| CAN communication system (for LHD) DTC is output | B |
| CAN communication system (for RHD) DTC is output | C |
| | Go to CAN COMMUNICATION SYSTEM ()
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| | Go to CAN COMMUNICATION SYSTEM ()
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| 2.CHECK ANTI-LOCK BRAKE SYSTEM (VEHICLE SPEED) |
| | Go to DIAGNOSTIC TROUBLE CODE CHART ()
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| 3.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (SPEEDOMETER) |
Operate the intelligent tester according to the display and select Active Test ().
Combination Meter| Tester Display | Test Part | Control Range | Diagnostic Note |
| Speed Meter Operation | Speedometer | 0, 40, 80, 120, 160, 200, 240 or 280 | Perform the test with the vehicle stopped and engine idling. |
Make sure that the vehicle is stopped and the engine is idling. The doors will be locked automatically when performing the speedometer Active Test. This is a normal function.
The displayed value has the same units (km/h, mph) as the main scale of the vehicle speedometer.
The needle position should be within the acceptable tolerance.
- OK:
- Needle indication is normal.
Result| Result | Proceed to |
| OK | A |
| NG (w/ Multi-information Display) | B |
| NG (w/o Multi-information Display) | C |
| | REPLACE COMBINATION METER ASSEMBLY ()
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| | REPLACE COMBINATION METER ASSEMBLY ()
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| 4.READ VALUE USING INTELLIGENT TESTER (VEHICLE SPEED) |
Operate the intelligent tester according to the display and select Data List ().
Combination Meter| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Vehicle Speed meter | Vehicle speed/Min.: 0 (0), Max.: 255 (158) | Almost same as actual speed (when driving) | Unit: km/h (mph) |
- OK:
- Vehicle speed displayed on the intelligent tester is almost the same as actual vehicle speed measured using speedometer tester (calibrated chassis dynamometer).
Result| Result | Proceed to |
| NG | A |
| OK (w/ Multi-information Display) | B |
| OK (w/o Multi-information Display) | C |
| | REPLACE COMBINATION METER ASSEMBLY ()
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| | REPLACE COMBINATION METER ASSEMBLY ()
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| 5.READ VALUE USING INTELLIGENT TESTER (WHEEL SPEED SENSOR) |
Operate the intelligent tester according to the display and select Data List ().
ABS/VSC/TRAC| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| FR Wheel Speed | Wheel speed sensor FR reading/Min.: 0 (0), Max.: 326 (202) | Actual wheel speed | A similar speed is indicated on the speedometer. |
| FL Wheel Speed | Wheel speed sensor FL reading/Min.: 0 (0), Max.: 326 (202) | Actual wheel speed | A similar speed is indicated on the speedometer. |
| RR Wheel Speed | Wheel speed sensor RR reading/Min.: 0 (0), Max.: 326 (202) | Actual wheel speed | A similar speed is indicated on the speedometer. |
| RL Wheel Speed | Wheel speed sensor RL reading/Min.: 0 (0), Max.: 326 (202) | Actual wheel speed | A similar speed is indicated on the speedometer. |
- OK:
- Vehicle speed displayed on the intelligent tester is almost the same as actual vehicle speed measured using speedometer tester (calibrated chassis dynamometer).
Result| Result | Proceed to |
| NG (for LHD) | A |
| NG (for RHD) | B |
| OK (w/ Multi-information Display) | C |
| OK (w/o Multi-information Display) | D |
| | REPLACE HYDRAULIC BRAKE BOOSTER ASSEMBLY ()
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| | REPLACE COMBINATION METER ASSEMBLY ()
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| | REPLACE COMBINATION METER ASSEMBLY ()
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| A | |
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| REPLACE HYDRAULIC BRAKE BOOSTER ASSEMBLY ()
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