DTC P0617 2AD-FHV

 

While the engine is being cranked, positive battery voltage is applied to terminal STA of the ECM.
If the ECM detects the starter control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and sets the DTC.
This monitor runs when the vehicle has been driven at 20 km/h (12.4 mph) for more than 20 seconds.

Toyota fault code list DTC P0617

DTC No.	DTC Detection Condition	Trouble Area
P0617	When conditions (a), (b) and (c) are met, positive (+B) battery voltage of 10.5 V or more applied to ECM for 20 seconds (1 trip detection logic): (a) Vehicle speed is more than 20 km/h (12.4 mph) (b) Engine speed is more than 1,000 rpm (c) STA signal is ON	Starter relay circuit Ignition switch ECM

 

NOTICE:

After replacing the ECM, the new ECM needs registration and initialization.

HINT:

The following troubleshooting process is based on the premise that the engine is cranked normally. If the engine will not crank, proceed to the problem symptoms table.

 

1.CHECK IF VEHICLE IS EQUIPPED WITH ENTRY AND START SYSTEM

 

Result:

Result	Proceed to
w/o Entry and Start System	A
w/ Entry and Start System	B

B	Go to step 8

A

2.READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch ON and turn the tester ON.

3. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

4. Check the value displayed on the tester when the ignition switch is turned to the on (IG) and Start positions.

    

   OK:

   Ignition Switch Condition	Tester Display (Starter Signal)
   ON	OFF
   START	ON

 

OK	CHECK FOR INTERMITTENT PROBLEMS

NG

3.INSPECT IGNITION SWITCH ASSEMBLY

1. Disconnect the E5 ignition switch connector.

2. Measure the resistance of the ignition switch.

    

   Standard resistance:

   Condition	Tester Condition	Specified Condition
   OFF	Between all terminals	1 M? or more
   ACC	2 - 3	1 ? or less
   ON	2 - 4, 6 - 7	1 ? or less
   START	1 - 2, 2 - 4, 6 - 7, 7 - 8	1 ? or less

3. Reconnect the ignition switch connector.

 

OK	Go to step 5

NG

4.REPLACE IGNITION SWITCH ASSEMBLY

 

NEXT

5.READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch ON and turn the tester ON.

3. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

4. Check the value displayed on the tester when the ignition switch is turned to the on (IG) and Start positions.

    

   OK:

   Ignition Switch Condition	Tester Display (Starter Signal)
   ON	OFF
   START	ON

 

OK	SYSTEM IS OK

NG

6.REPAIR OR REPLACE HARNESS AND CONNECTOR (IGNITION SWITCH - STA TERMINAL OF ECM)

 

NEXT

7.CHECK WHETHER DTC OUTPUT RECURS

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch on (IG) and turn the tester ON.

3. Clear DTCs.

4. Drive the vehicle at more than 12.4 mph (20 km/h) for over 20 seconds.

5. Enter the following menus: Powertrain / Engine and ECT / Data List / DTC.

6. Read DTCs.

    

   Result:

   Display (DTC Output)	Proceed to
   P0617	A
   No DTC	B

 

B	SYSTEM IS OK

A
REPLACE ECM

8.READ VALUE OF INTELLIGENT TESTER (STARTER SIGNAL)

1. Connect the intelligent tester to the DLC3.

2. Turn the ignition switch on (IG) and turn the tester ON.

3. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

4. Check the value displayed on the tester when the ignition switch is turned to the on (IG) and Start positions.

    

   OK:

   Ignition Switch Condition	Tester Display (Starter Signal)
   On (IG)	OFF
   Engine starts	ON

 

OK	REPLACE ECM

NG

9.INSPECT CLUTCH START SWITCH

1. Disconnect the A4 clutch start switch connector.

2. Measure the resistance when the clutch start switch is ON and OFF.

    

   Standard resistance:

   Ignition Switch Position	Tester Connection	Specified Condition
   On (pushed)	1 - 2	Below 1 ?
   Off (not pushed)	1 - 2	10 k? or higher

3. Reconnect the clutch start switch connector.

 

NG	REPLACE CLUTCH START SWITCH

OK
CHECK CRANKING HOLDING FUNCTION CIRCUIT