Tachometer Malfunction: Procedure

1. 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   8 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
5. Check the operation by referring to the table below.
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Tacho Meter Operation	Tachometer	0, 1000, 2000, 3000, 4000, 5000, 6000, 7000 (RPM)	Confirm that the vehicle is stopped with the engine idling

   OK

   Tachometer indication is normal.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. Check the values by referring to the table below.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine RPM	Engine speed/Min.: 0 RPM, Max.: 12750 RPM	600 to 700 RPM (When idling)	If data received from the ECM exceeds the range that can be displayed on the meter, the meter continues to display the maximum value of the range.

   OK

   Engine speed displayed on the Techstream is almost the same as the tachometer indication.

6. Record the engine speed displayed on the Techstream.

   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 

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Data List.
5. Check the values by referring to the table below.
   ENGINE AND ECT
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Speed	Engine speed/Min.: 0 RPM, Max.: 16383 RPM	600 to 700 RPM (When idling)	-

   OK

   Engine speed displayed on the Techstream is almost the same as the previously recorded Techstream indication (Body Electrical / Combination Meter / Data List / Engine RPM).

NG → See step   7 

OK: Go to next step 

1. Replace the ECM with a new or a known good one. Refer to REMOVAL for 2GR-FE).

   OK

   The operation of the tachometer returns to normal.

NG → See step   6 

OK → END