Toyota Venza: Transmission Range Sensor Circuit Malfunction (PRNDL Input) (P0705)

Toyota Venza Service Manual / U660e Automatic Transmission / Transaxle / Automatic Transaxle System / Transmission Range Sensor Circuit Malfunction (PRNDL Input) (P0705)

DESCRIPTION

The park/neutral position switch detects the shift lever position and sends signals to the TCM.

DTC No.	DTC Detection Condition	Trouble Area
P0705	(A) Any 2 or more signals of the following are ON simultaneously (2-trip detection logic) NSW input signal is ON. R input signal is ON. D input signal is ON. (B) All switches are OFF simultaneously for NSW, R and D.	Open or short in park/neutral position switch circuit Park/neutral position switch TCM

DTC No.

DTC Detection Condition

Trouble Area

P0705

(A) Any 2 or more signals of the following are ON simultaneously (2-trip detection logic)

NSW input signal is ON.
R input signal is ON.
D input signal is ON.

(B) All switches are OFF simultaneously for NSW, R and D.

Open or short in park/neutral position switch circuit
Park/neutral position switch
TCM

MONITOR DESCRIPTION

These DTCs indicate a problem with the park/neutral position switch and the wire harness in the park/neutral position switch circuit.

The park/neutral position switch detects the shift lever position and sends signals to the TCM.

For safety, the park/neutral position switch detects the shift lever position so that the engine can be started only when the shift lever is in P or N.

The park/neutral position switch sends a signal to the TCM according to the shift lever position (R or D). The TCM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously. The TCM will turn on the MIL and store the DTC.

MONITOR STRATEGY

Related DTCs	P0705: Park/neutral position switch/Verify switch input
Required sensors/Components	Park/neutral position switch
Frequency of operation	Continuous
Duration	Condition (A): 2 sec. Condition (B): 60 sec.
MIL operation	2 driving cycles
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present	None
Ignition switch	ON
Battery voltage	10.5 V or more
Starter	OFF

TYPICAL MALFUNCTION THRESHOLDS

When either condition below is met: Condition (A) or (B)

Condition (A)

When 2 or more of the following signals are input at the same time:

Park neutral position switch	ON
R position switch	ON
D position switch	ON

Condition (B)

When all conditions below are met:

Park neutral position switch	OFF
R position switch	OFF
D position switch	OFF

COMPONENT OPERATING RANGE

Park/neutral position switch

The park/neutral position switch sends only one signal to the TCM

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

Warm up the engine.
Turn the ignition switch off.
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / ECT / Data List.

According to the display on the Techstream, read the Data List.

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
Neutral Position SW Signal	PNP switch status / ON or OFF	ON: Shift lever is in P or N OFF: Shift lever is not in P or N	When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.
Shift SW Status (R Range)	PNP switch status / ON or OFF	ON: Shift lever is in R OFF: Shift lever is not in R	When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.
Shift SW Status (D Range)	PNP switch status / ON or OFF	ON: Shift lever is in D or S OFF: Shift lever is not in D or S	When the shift lever position displayed on the Techstream differs from the actual position, adjustment of the PNP switch or the shift cable may be incorrect.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (BATTERY - PARK/NEUTRAL POSITION SWITCH)

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

(b) Turn the ignition switch to ON.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
B2-1 (RB) - Body ground	Ignition switch ON	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to Park/Neutral Position Switch)

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.	CHECK HARNESS AND CONNECTOR (OUTPUT SIGNAL)

(a) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
B2-4 (B) - Body ground	Ignition switch ON	11 to 14 V

Text in Illustration

*1	Front view of wire harness connector (to Park/Neutral Position Switch)

GO TO STEP 5

3.	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 - 9	P or N	Below 1 Ω
4 - 9	Except P and N	10 Ω or higher
1 - 2	R	Below 1 Ω
1 - 2	Except R	10 Ω or higher
1 - 7	D, S, "+" or "-"	Below 1 Ω
1 - 7	Except D, S, "+" and "-"	10 Ω or higher

Text in Illustration

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

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

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

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

(b) Disconnect the TCM connectors.

(c) Turn the ignition switch to ON, and measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

Standard Voltage:

Tester Connection	Shift Lever Position	Specified Condition
B40-15 (R) - Body ground	R	11 to 14 V*
B40-15 (R) - Body ground	Except R	Below 1 V
B40-16 (D) - Body ground	D, S, "+" or "-"	11 to 14 V
B40-16 (D) - Body ground	Except D, S, "+" and "-"	Below 1 V

Text in Illustration

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

HINT:

*: The voltage will drop slightly due to lighting up of the back up light.

REPLACE TCM

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

(a) Turn the ignition switch off.

(b) Disconnect the TCM connector.

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

Standard Resistance (Check for Open):

Tester Connection	Condition	Specified Condition
B2-4 (B) - B40-11 (NSW)	Always	Below 1 Ω

Standard Resistance (Check for Short):

Tester Connection	Condition	Specified Condition
B2-4 (B) or B40-11 (NSW) - Body ground	Always	10 kΩ or higher

Text in Illustration

Front view of wire harness connector

(to Park/Neutral Position Switch)

Front view of wire harness connector

(to TCM)

REPLACE TCM

REPAIR OR REPLACE HARNESS OR CONNECTOR

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