MALFUNCTION OF STARTER KEY
(DTC CODE P0617 / DIAGNOSIS MONITOR CODE 45)

1. Set the starter key to the "LOCK" position and connect the signal check harness.
2. Disconnect the signal check harness connectors from the ECU.
3. Turn the starter key "ON" and measure voltage between the terminals V12 and V40 or V60.
   

   
   

   

   Make sure of an appropriate gear position and of safety.

   ECU terminal No.	Description of terminal
   V12	+B
   V40	GND
   V60	GND

    

   Starter key	Voltage (V)
   LOCK	1 or less
   START	19 or more

    

NO Faulty harness	YES Fault in engine ECU and/or ECU connectors

1. Confirm the DTCP0617 is inactive

   • Start the engine and let it idling condition.
   • Verify the DTC P0617 is inactive.

   

2. DTC Clear

   • Clear the DTC with Hino DX
   • Confirm the same DTC is not reoccurred

   

P0617 is reoccur: Return to first process Other DTC appear: Refer to concerned Trouble shooting

Complete