METER / GAUGE SYSTEM Tachometer Malfunction

DESCRIPTION

The combination meter receives engine speed signals from the ECM via the CAN line. The combination meter displays engine speed data that is calculated based on the data received from the ECM.

WIRING DIAGRAM

*1	Combination Meter Assembly
*2	CAN Communication Line

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

   
   

   1. Check for DTCs Click here.

      Result

      Result	Proceed to
      CAN communication system DTC is not output	A
      CAN communication system DTC is output	B

   
   

   B

   Go to CAN COMMUNICATION SYSTEM Click here

   A

2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TACHOMETER)

   
   

   1. Use the Active Test to check the operation of the tachometer Click here.

      Combination Meter

      Tester Display	Test Part	Control Range	Diagnostic Note
      TachoMeter Operation	Tachometer	0, 1000, 2000, 3000, 4000, 5000, 6000 or 7000	Perform the test with the vehicle stopped and the engine idling.

      Tech Tips

      Make sure that the vehicle is stopped and the engine is idling.

      OK
      Needle indication is normal.

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

3. READ VALUE USING INTELLIGENT TESTER (TACHOMETER)

   
   

   1. Use the Data List to check if the tachometer is operating properly Click here.

      Combination Meter

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Engine Rpm	Engine speed/Min.: 0, Max.: 12750	Idling: 700 to 800	Unit: rpm

      OK
      Engine speed displayed on the intelligent tester is almost the same as actual engine speed.

   
   

   NG

   REPLACE COMBINATION METER ASSEMBLY Click here

   OK

4. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)

   
   

   1. Use the Data List to check the engine speed Click here.

      Engine

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Engine speed	ME Engine speed/Min.: 0, Max.: 16383 rpm	Idling: 600 to 700	-

      Result

      Result	Proceed to
      Engine speed displayed on intelligent tester is almost same as actual engine speed	A
      Engine speed displayed on intelligent tester is not same as actual engine speed (for 1AD-FTV)	B
      Engine speed displayed on intelligent tester is not same as actual engine speed (for 2AD-FHV)	C
      Engine speed displayed on intelligent tester is not same as actual engine speed (for 2AD-FTV)	D

   
   

   A

   REPLACE COMBINATION METER ASSEMBLY Click here

   C

   Go to ECD SYSTEM Click here

   D

   CHECK VEHICLE TYPE Click here

   B

5. CHECK VEHICLE TYPE

   
   

   1. Check vehicle type.

      Result

      Result	Proceed to
      for CCo	A
      for DPF	B

   
   

   A

   Go to ECD SYSTEM Click here

   B

   Go to ECD SYSTEM Click here

6. CHECK VEHICLE TYPE

   
   

   1. Check vehicle type.

      Result

      Result	Proceed to
      w/ Gear Shift Indicator	A
      w/o Gear Shift Indicator	B

   
   

   A

   Go to ECD SYSTEM Click here

   B

   Go to ECD SYSTEM Click here