Tachometer Malfunction: Procedure

1. Connect a Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Check for DTCs and note any codes that are output. Refer to DTC CHECK / CLEAR .
4. Clear the DTC. Refer to DTC CHECK / CLEAR .
5. Recheck for DTCs. Refer to DTC CHECK / CLEAR .
   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 a Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Check for DTCs and note any codes that are output. Refer to DTC CHECK / CLEAR .
4. Clear the DTC. Refer to DTC CHECK / CLEAR .
5. Recheck for DTCs. 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   5 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Active Test.
5. 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	Vehicle is stopped and engine is idling

   OK

   Engine speed displayed on the tester is approximately the same as that of the tachometer reading.

NG → See step   6 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. 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.: 12, 750	Approximately same as actual engine speed	Unit: rpm

   OK

   Engine speed displayed on the tester is approximately the same as that displayed on the combination meter.

   NOTE:

   Determine whether the value displayed on the tester is within the acceptable range by referring to reference values described in "ON-VEHICLE INSPECTION" See step  3.

NG → See step   9 

OK → See step   7