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	CAN Line
*2	Combination Meter Assembly

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 (for LHD) DTC is output	B
      CAN communication system (for RHD) DTC is output	C

   
   

   B

   Go to CAN COMMUNICATION SYSTEM Click here

   C

   Go to CAN COMMUNICATION SYSTEM Click here

   A

2. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (TACHOMETER)

   
   

   1. Operate the intelligent tester according to the display and select Active Test Click here.

      Combination Meter

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

      Tech Tips

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

      OK
      Needle indication is normal.

      Result

      Result	Proceed to
      OK	A
      NG (w/ Multi-information Display)	B
      NG (w/o Multi-information Display)	C

   
   

   B

   REPLACE COMBINATION METER ASSEMBLY Click here

   C

   REPLACE COMBINATION METER ASSEMBLY Click here

   A

3. READ VALUE USING INTELLIGENT TESTER (TACHOMETER)

   
   

   1. Operate the intelligent tester according to the display and select Data List 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.

      Result

      Result	Proceed to
      NG	A
      OK (w/ Multi-information Display)	B
      OK (w/o Multi-information Display)	C

   
   

   B

   REPLACE COMBINATION METER ASSEMBLY Click here

   C

   REPLACE COMBINATION METER ASSEMBLY Click here

   A

4. READ VALUE USING INTELLIGENT TESTER (ENGINE SPEED)

   
   

   1. Operate the intelligent tester according to the display and select Data List Click here.

      Result

      Result	Proceed to
      Engine speed displayed on the intelligent tester is almost same as actual engine speed	A
      Engine speed displayed on the intelligent tester is not same as actual engine speed (for 1GR-FE)	B
      Engine speed displayed on the intelligent tester is not same as actual engine speed (for 1UR-FE)	C
      Engine speed displayed on the intelligent tester is not same as actual engine speed (for 3UR-FE)	D
      Engine speed displayed on the intelligent tester is not same as actual engine speed (for 1VD-FTV)	E

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

   
   

   B

   REPLACE ECM Click here

   C

   REPLACE ECM Click here

   D

   REPLACE ECM Click here

   E

   REPLACE ECM Click here

   A

5. CHECK COMBINATION METER ASSEMBLY

   
   

   1. Check the combination meter type.

      Result

      Result	Proceed to
      w/ Multi-information Display	A
      w/o Multi-information Display	B

   
   

   A

   REPLACE COMBINATION METER ASSEMBLY Click here

   B

   REPLACE COMBINATION METER ASSEMBLY Click here