Tachometer Malfunction: Procedure

1. Check if 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 . Refer to DIAGNOSTIC TROUBLE CODE CHART

B → GO TO CAN COMMUNICATION SYSTEM 

A: Go to next step 

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

   Needle indication is normal.

NG → REPLACE COMBINATION METER ASSEMBLY 

OK: Go to next step 

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Rpm	Engine speed/Min.: 0 rpm, Max.: 12750 rpm	Almost same as actual engine speed (When engine is running)	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 tester is almost the same as the actual engine speed.

NG → See step   4 

OK → REPLACE COMBINATION METER ASSEMBLY 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the tester ON.
4. Enter the following menus: DIAGNOSIS / OBD/MOBD / ENGINE / 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.: 16383.75 rpm	Almost same as actual engine speed (When engine is running)	-

   OK

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

NG → GO TO SFI SYSTEM 

OK: Go to next step 

1. Replace the ECM with a new or a normal one.

   OK

   The operation of the tachometer returns to normal.

NG → REPLACE COMBINATION METER ASSEMBLY 

OK → END