Toyota Venza: Starter Relay Circuit High (P0617)

Toyota Venza Service Manual / 1ar-fe Engine Control / Sfi System / Starter Relay Circuit High (P0617)

MONITOR DESCRIPTION

While the engine is being cranked, 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 stores the DTC.

This monitor runs when the vehicle is driven at 20 km/h (12.43 mph) or more for over 20 seconds.

DTC No.	DTC Detection Condition	Trouble Area
P0617	When all of the following conditions are met, and a positive (+B) battery voltage of 10.5 V or higher is applied to the ECM for 20 seconds (1 trip detection logic): (a) The vehicle speed is 20 km/h (12.43 mph) or more. (b) The engine speed is 1000 rpm or more. (c) The STA signal is ON.	Park/neutral position switch assembly Starter signal circuit ECM

MONITOR STRATEGY

Related DTCs	P0617: Verify Starter Signal
Required Sensors/Components (Main)	ST relay Park/neutral position switch Ignition switch
Required Sensors/Components (Related)	Vehicle speed sensor Crankshaft position sensor
Frequency of Operation	Continuous
Duration	20 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Battery voltage	10.5 V or higher
Vehicle speed	20 km/h (12.43 mph) or more
Engine speed	1000 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

Starter signal

CONFIRMATION DRIVING PATTERN

Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page ).

Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the Techstream on [A].
Idle the engine for 5 minutes or more [B].
Drive the vehicle at 24 km/h (15 mph) or more for 20 seconds or more [C].
CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Enter the following menus: Powertrain / Engine / Trouble Codes [D].
Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P0617.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

HINT:

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.

If the judgment result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (See page ).
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.	READ VALUE USING TECHSTREAM (STARTER SIGNAL)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine / Data List / Starter Signal.

(e) Check the value displayed on the Techstream when the vehicle is driven at 20 km/h (12.43 mph) or more.

Condition	Starter Signal	Proceed to
Driving at 20 km/h (12.43 mph) or more	OFF (Starter signal OFF)	A
Driving at 20 km/h (12.43 mph) or more	ON (Starter signal ON)	B

CHECK FOR INTERMITTENT PROBLEMS

2.	INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Inspect the park/neutral position switch assembly (See page for U760E, See page
for U760F).

Result	Proceed to
OK (w/ smart key system)	A
OK (w/o smart key system)	B
NG (for U760E)	C
NG (for U760F)	D

GO TO STEP 4

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

3.	REPAIR OR REPLACE HARNESS OR CONNECTOR (STA SIGNAL CIRCUIT)

(a) Repair or replace harness or connector (park/neutral position switch assembly - power management control ECU - ECM - ST relay)

GO TO STEP 5

4.	REPAIR OR REPLACE HARNESS OR CONNECTOR (STA SIGNAL CIRCUIT)

(a) Repair or replace harness or connector (park/neutral position switch assembly - ECM - ST relay).

5.	CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Clear the DTCs (See page ).

(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(g) Enter the following menus: Powertrain / Engine / Trouble Codes.

(h) Read the DTCs.

Result	Proceed to
DTC P0617 is output	A
DTC is not output	B

REPLACE ECM

END

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