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 power 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)	-

   OK

   Tachometer indication is normal.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the power 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	While idling after the engine is warmed up and inspection mode: approximately 900 RPM	-

   NOTE:

   Enter the inspection mode. Refer to INSPECTION MODE PROCEDURE .

   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. Set the vehicle in the maintenance mode using the Techstream. Refer to INSPECTION MODE PROCEDURE .
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain / Hybrid Control / Data List.
6. Check the values by referring to the table below.
   HYBRID CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Revolution	Engine speed/ Min.: 0 RPM, Max.: 16383.75 RPM	While idling after the engine is warmed up and inspection mode: approximately 900 RPM While driving at a constant speed: No significant fluctuation	-

   NOTE:

   Enter the inspection mode. Refer to INSPECTION MODE PROCEDURE .

   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 power management control ECU with a new or a known good one. Refer to REMOVAL .

   OK

   The operation of the tachometer returns to normal.

NG → See step   6 

OK → END