Tachometer Malfunction [09/2015 - ]: Procedure

1. Check for DTC (Refer to DIAGNOSIS SYSTEM [09/2015 - ] ).
   RESULT
   
   

   Result	Proceed to
   CAN communication system DTC is not output	A
   CAN communication system DTC is output	B

Result:  B

B 

Go to CAN COMMUNICATION SYSTEM 

(Refer to PRECAUTION [09/2015 - ] )

Result:  A

A 

See step  2

1. Operate the Techstream according to the display and select "Active Test".
   COMBINATION METER
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Tachometer operation	Tachometer	0, 1000, 2000, 3000, 4000, 5000, 6000 or 7000	-

   OK

   Needle indication is normal.

Result:  NG

NG 

REPLACE NO. 1 METER ECU 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  OK

OK 

See step  3

1. Operate the Techstream according to the display and select "Data List".
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Rpm	Engine speed / Min.: 0, Max.: 12750	Idling: 700 to 800	Unit: rpm

   OK

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

Result:  OK

OK 

REPLACE NO. 1 METER ECU 

(Refer to DISASSEMBLY [09/2015 - ] )

Result:  NG

NG 

See step  4

1. Operate the Techstream according to the display and select "Data List".
   HYBRID CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Revolution	Engine speed / Min.: 0, Max.: 16383.75	Idling: 950 to 1050	Unit: rpm

   OK

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

Result:  NG

NG 

Go to HYBRID CONTROL SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] )

Result:  OK

OK 

See step  5

1. Temporarily replace the No. 1 meter ECU with a new one (Refer to DISASSEMBLY [09/2015 - ] ).

Result:  NEXT

NEXT 

See step  6

1. Check that the operation of the tachometer returns to normal (Refer to OPERATION CHECK [09/2015 - ] ).

   OK

   Operation of tachometer returns to normal.

Result:  OK

OK 

END (NO. 1 METER ECU IS DEFECTIVE) 

Result:  NG

NG 

REPLACE HYBRID VEHICLE CONTROL ECU 

(Refer to REMOVAL [09/2015 - ] )