Tachometer Malfunction: Procedure
- CHECK CAN COMMUNICATION SYSTEM
- Check if a CAN communication DTC is output.Refer to DIAGNOSIS SYSTEM
.RESULT
Result Proceed to CAN communication DTC is not output A CAN communication DTC is output B
B → See step 5
A: Go to next step
- Check if a CAN communication DTC is output.Refer to DIAGNOSIS SYSTEM
.
- PERFORM ACTIVE TEST USING TECHSTREAM (TACHOMETER OPERATION)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Active Test.
- According to the display on the Techstream, perform the Active Test.COMBINATION METER
Tester Display Test Part Control Range Diagnostic Note TachoMeter Operation Tachometer 0/1000/2000/3000/4000/5000/ 6000/7000 rpm Perform the test with the vehicle stopped and the engine idling. OK
Tachometer indication is normal.
NG → See step 6
OK: Go to next step
- READ VALUE USING TECHSTREAM (ENGINE RPM)
- Connect the Techstream to the DLC3.
- Start the engine.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Combination Meter / Data List.
- According to the display on the Techstream, read the Data List.COMBINATION METER
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Rpm Engine speed/
Min.: 0, Max.: 12750Approximately same as actual engine speed (when engine is running) Unit: rpm OK
Engine speed displayed on the Techstream is almost the same as the tachometer indication.
HINT:
Check the engine speed when the engine is fully warmed up, and the air conditioning and all electrical accessories are off.
NG → See step 6
OK: Go to next step
- CHECK ENGINE CONTROL SYSTEM
- Check if a engine control DTC is output.Refer to DTC CHECK / CLEAR
.RESULT
Result Proceed to Engine control DTC is not output A Engine control DTC is output B
B → See step 7
A → See step 6
- Check if a engine control DTC is output.Refer to DTC CHECK / CLEAR
.
- GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL
- GO TO SFI SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING