Toyota Venza: Starter Relay Circuit High (P0617)

Toyota Venza Service Manual / U660e Automatic Transmission / Transaxle / Automatic Transaxle System / Starter Relay Circuit High (P0617)

DESCRIPTION

While the engine is being cranked, battery voltage is applied to terminal STA of the TCM.

If the TCM detects the Starter Control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The TCM then illuminates the MIL and sets the DTC.

This monitor runs when the vehicle is driven at 20 km/h (12.4 mph) for over 20 seconds.

DTC No.	DTC Detection Condition	Trouble Area
P0617	When conditions (a), (b) and (c) are met, positive (+B) battery voltage 10.5 V or more applied to TCM for 20 seconds (1 trip detection logic): (a) Vehicle speed more than 20 km/h (12.4 mph) (b) Engine speed more than 1000 rpm (c) STA signal ON	Park/Neutral Position switch Starter relay circuit Cranking holding function circuit TCM

DTC No.

DTC Detection Condition

Trouble Area

P0617

When conditions (a), (b) and (c) are met, positive (+B) battery voltage 10.5 V or more applied to TCM for 20 seconds

(1 trip detection logic):

(a) Vehicle speed more than 20 km/h (12.4 mph)

(b) Engine speed more than 1000 rpm

Park/Neutral Position switch
Starter relay circuit
Cranking holding function circuit
TCM

MONITOR STRATEGY

Related DTCs	P0617: Starter signal
Required Sensors/Components (Main)	STARTER relay, PMP switch, ignition switch
Required Sensors/Components (Sub)	Vehicle speed sensor (VSS), Crankshaft Position (CKP) sensor
Frequency of Operation	Continuous
Duration	20 seconds
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever these DTCs are not present:	None
Battery voltage	10.5 V or more
Vehicle speed	12.43 mph (20 km/h) or more
Engine speed	1,000 rpm or more

TYPICAL MALFUNCTION THRESHOLDS

Starter signal

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Perform the universal trip to clear permanent DTCs (See page ).

HINT:

The following troubleshooting flowchart is based on the premise that the engine is cranked normally. If the engine does not crank, proceed to the problem symptoms table (See page
).
Read freeze frame data using the Techstream. The TCM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (See page ).

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 / ECT / Data List.

(e) Read the value displayed on the Techstream.

(f) Crank the engine.

(g) Read the value displayed on the Techstream.

OK:

Tester Display	Condition	Standard
Starter Signal	ignition switch ON	OFF
Starter Signal	Engine is cranking	ON

GO TO STEP 3

2.	INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Disconnect the park/neutral position switch connector.

(b) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

Standard Resistance:

Tester Connection	Shift Lever Position	Specified Condition
4 (B) - 9 (L)	P	Below 1 Ω
	N	Below 1 Ω
	Except P and N	10 kΩ or higher
1 (RB) - 9 (L)	P	10 kΩ or higher
	R	10 kΩ or higher
	N	10 kΩ or higher
	D	10 kΩ or higher

Text in Illustration

*1	Component without harness connected (Park/Neutral Position Switch)

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

3.	CHECK TCM (STA VOLTAGE)

(a) Connect the park/neutral position switch connector.

(b) Disconnect the TCM connector.

Standard Voltage:

Tester Connection	Condition	Specified Condition
B40-10 (STA) - Body ground	ignition switch ON and shift lever in P or N	Below 2 V
B40-10 (STA) - Body ground	ignition switch ON and shift lever not in P or N	Below 1 V

Text in Illustration

*1	Front view of wire harness connector (to TCM)

REPLACE TCM

4.	CHECK HARNESS AND CONNECTOR (TCM - PARK/NEUTRAL POSITION SWITCH)

(a) Disconnect the TCM connector.

(b) Remove the ST relay from the engine room relay block.

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
B40-10 (STA) - Body ground	ignition switch ON	Below 1 V

Text in Illustration

*1	Front view of wire harness connector (to TCM)

CHECK STARTER SIGNAL CIRCUIT

REPAIR OR REPLACE HARNESS OR CONNECTOR

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