Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Transmission Range Sensor "A" Circuit Open (P070513,P070562)

Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual / Drivetrain / U881f (automatic Transmission / Transaxle) / Automatic Transaxle System / Transmission Range Sensor "A" Circuit Open (P070513,P070562)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P070513

Transmission Range Sensor "A" Circuit Open

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  • The engine switch is on (IG) and battery voltage is 10.5 V or more.
  • All of the following signals are OFF simultaneously:
    • NSW input signal
    • P input signal
    • R input signal
    • N input signal
    • D input signal
  • 60 seconds
  • 2-trip detection logic
  • Park/neutral position switch assembly
  • Open in park/neutral position switch assembly circuit
  • ECM

Comes on

DTC stored

SAE Code:

P0705

P070562

Transmission Range Sensor "A" Signal Compare Failure

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  • The engine switch is on (IG) and battery voltage is 10.5 V or more.
  • Any 2 or more of the following signals are ON simultaneously:
    • (NSW, P or N) input signal
    • R input signal
    • D input signal
  • 2 seconds
  • 2-trip detection logic
  • Park/neutral position switch assembly
  • Short in park/neutral position switch assembly circuit
  • ECM

Comes on

DTC stored

SAE Code:

P0705

MONITOR DESCRIPTION

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

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

For safety, the park/neutral position switch assembly 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 assembly sends a signal to the ECM according to the shift lever position (P, N, R, D or M).

The ECM determines that there is a problem with the switch or related parts if it receives more than 1 position signal simultaneously and will then illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

P0705: Park/neutral position switch assembly/Verify switch input

Required sensors/Components

Park/neutral position switch

Frequency of operation

Continuous

Duration

P070513: 60 sec.

P070562: 2 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

Engine switch

On (IG)

Battery voltage

8 V or more

Starter

OFF

TYPICAL MALFUNCTION THRESHOLDS

P070513

All of following conditions are met:

-

P position switch

OFF

N position switch

OFF

Park/neutral position switch (NSW)

OFF

R position switch

OFF

D position switch

OFF
P070562

Any two of the following conditions are met:

Conditions 1, 2 and 3

1. One of the following conditions is met:

Conditions (a), (b) or (c)

(a) P position switch

ON

(b) N position switch

ON

(c) Park/neutral position switch (NSW)

ON

2. R position switch

ON

3. D position switch

ON

COMPONENT OPERATING RANGE

Park/neutral position switch

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

CONFIRMATION DRIVING PATTERN

HINT:

  • After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.

    Click here

  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the engine switch off and wait for 2 minutes or more.
  5. Turn the engine switch on (IG) and turn the Techstream on.
  6. Wait with the shift lever in each position (P, R, N and D) for 60 seconds or more each with the engine switch on (IG). [*1]

    HINT:

    [*1] : Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  8. Input the DTC: P070513 or P070562.
  9. 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 shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • Perform the universal trip to clear permanent DTCs.

    Click here

  • Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

    Click here

PROCEDURE

1.

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

(a) Disconnect the D15 park/neutral position switch assembly connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D15-1 (RB) - Body ground

Engine switch on (IG)

11 to 14 V

D15-1 (RB) - Body ground

Engine switch off

Below 1 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

CHECK HARNESS AND CONNECTOR (OUTPUT SIGNAL)

(a) Disconnect the D15 park/neutral position switch assembly connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

D15-4 (B) - Body ground

Engine switch on (IG)

11 to 14 V

D15-4 (B) - Body ground

Engine switch off

Below 1 V
NG

GO TO STEP 6

OK

3.

INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

(a) Disconnect the D15 park/neutral position switch assembly connector.

*a

Component without harness connected

(Park/Neutral Position Switch Assembly)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (B) - 9 (L)

Shift lever in P or N

Below 1 Ω

1 (RB) - 3 (PL)

Shift lever in P

Below 1 Ω

1 (RB) - 2 (RL)

Shift lever in R

Below 1 Ω

1 (RB) - 8 (NL)

Shift lever in N

Below 1 Ω

1 (RB) - 7 (DL)

Shift lever in D, M, "+" or "-"

Below 1 Ω

4 (B) - 9 (L)

Shift lever not in P or N

10 kΩ or higher

1 (RB) - 3 (PL)

Shift lever not in P

10 kΩ or higher

1 (RB) - 2 (RL)

Shift lever not in R

10 kΩ or higher

1 (RB) - 8 (NL)

Shift lever not in N

10 kΩ or higher

1 (RB) - 7 (DL)

Shift lever not in D, M, "+" or "-"

10 kΩ or higher
NG

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

OK

4.

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

(a) Connect the D15 park/neutral position switch assembly connector.

(b) Disconnect the D2 ECM connector.

(c) Turn the engine switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

D2-108 (P) - Body ground
  • Engine switch on (IG)
  • Shift lever in P

11 to 14 V

D2-107 (R) - Body ground
  • Engine switch on (IG)
  • Shift lever in R

11 to 14 V*

D2-140 (N) - Body ground
  • Engine switch on (IG)
  • Shift lever in N

11 to 14 V

D2-139 (D) - Body ground
  • Engine switch on (IG)
  • Shift lever in D, M, "+" or "-"

11 to 14 V

D2-108 (P) - Body ground
  • Engine switch on (IG)
  • Shift lever not in P

Below 1 V

D2-107 (R) - Body ground
  • Engine switch on (IG)
  • Shift lever not in R

Below 1 V

D2-140 (N) - Body ground
  • Engine switch on (IG)
  • Shift lever not in N

Below 1 V

D2-139 (D) - Body ground
  • Engine switch on (IG)
  • Shift lever not in D, M, "+" or "-"

Below 1 V

HINT:

*: The voltage will drop slightly due to the illumination of the back up lights.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)
OK

5.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM A/T CODE REGISTRATION

6.

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - ECM)

(a) Disconnect the D15 park/neutral position switch assembly connector.

(b) Disconnect the D2 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D15-4 (B) - D2-106 (NSW)

Always

Below 1 Ω

D15-4 (B) or D2-106 (NSW) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)
OK

7.

REPLACE ECM

(a) Replace the ECM.

Click here

NEXT

PERFORM A/T CODE REGISTRATION

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