Tachometer Malfunction [08/2013 - ]: Procedure

1. Check if CAN communication DTCs are output. Refer to DIAGNOSIS SYSTEM [08/2013 - ] .

   Result

   Result	Proceed to
   CAN communication DTCs are not output.	A
   CAN communication DTCs are output.	B

B → See step   9 

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	OFF, 0, 1000, 2000, 3000, 4000, 5000, 6000, 7000	-

   OK

   Tachometer indication is normal.

NG → See step   7 

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	Approximately 900 rpm: Idling	-

   OK

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

   HINT: 

   • When the Data List values and tachometer values match, a signal output error of the power management control ECU or an internal malfunction of the combination meter assembly is suspected.
   • When the Data List values and tachometer values do not match, an internal malfunction of the combination meter assembly is suspected.

NG → See step   7 

OK: Go to next step 

1. Check if hybrid control system DTCs are output. Refer to DTC CHECK / CLEAR [08/2013 - ] .

   Result

   Result	Proceed to
   DTCs are not output.	A
   DTCs are 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:
   1. for Hybrid Control: Powertrain / Hybrid Control / Data List.
   2. for Combination Meter: Body Electrical / Combination Meter / Data List.
5. 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 rpm	While idling after the engine is warmed up and inspection mode: Approximately 900 rpm While driving at a constant speed: No significant fluctuation	-

   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Rpm	Engine speed/Min.: 0 rpm, Max.: 12750 rpm	Approximately 900 rpm: Idling	-

   Result

   Result	Proceed to
   The data list values of the ECUs do not match.	A
   The data list values of the ECUs match.	B

   HINT: 

   • When the Data List values of the ECUs match, an internal malfunction of the power management control ECU is suspected.
   • When the Data List values of the ECUs do not match, a signal output error of the power management control ECU or an internal malfunction of the combination meter assembly is suspected.

B → See step   10 

A: Go to next step 

1. Replace the combination meter assembly with a new or known good one. Refer to REMOVAL [08/2013 - ] .

   OK

   The operation of the tachometer returns to normal.

NG → See step   10 

OK → END