Lexus NX manuals

Lexus NX: Transmission Range Sensor Circuit (P0705-757)

Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (hybrid / Battery Control) / Hybrid Control System / Transmission Range Sensor Circuit (P0705-757)

DESCRIPTION

The shift lever position sensor sends 7 different switch signals to the hybrid vehicle control ECU. The hybrid vehicle control ECU uses these signals to detect the shift lever position (P, R, N, D or S). The hybrid vehicle control ECU also uses this information to determine the intended direction of travel (forward or reverse).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0705-757

Transmission Range Sensor Circuit

Shift sensor circuit malfunction (abnormal pattern)

A malfunction in the P, R, N, D or S circuit is detected based on the shift sensor input pattern.

(1 trip detection logic)
  • Wire harness or connector
  • Shift lever position sensor
  • Hybrid vehicle control ECU

Does not come on

Master Warning Light:

Comes on
Related Data List

DTC No.

ECU Data List

P0705-757
  • Shift Sensor Shift Pos
  • Shift Sensor SW - P
  • Shift Sensor SW - R
  • Shift Sensor SW - PR
  • Shift Sensor SW - N
  • Shift Sensor SW - DB1
  • Shift Sensor SW - DB2
  • Shift Sensor SW - PNB

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Turn the power switch on (IG).
  2. Slowly move the shift lever from P to S then back to P.

PROCEDURE

1.

READ VALUE USING TECHSTREAM (SHIFT SENSOR SW)

(a) Connect the Techstream the DLC3.

(b) Turn the power switch on (IG).

(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Shift Sensor SW - P, Shift Sensor SW - R, Shift Sensor SW - PR, Shift Sensor SW - N, Shift Sensor SW - DB1, Shift Sensor SW - DB2, Shift Sensor SW - PNB.

Powertrain > Hybrid Control > Data List

Tester Display

Shift Sensor SW - P

Shift Sensor SW - R

Shift Sensor SW - PR

Shift Sensor SW - N

Shift Sensor SW - DB1

Shift Sensor SW - DB2

Shift Sensor SW - PNB

(d) While slowly moving the shift lever from P to S, then back to P, read the Data List (Shift Sensor SW) displayed on the Techstream.

HINT:

Be sure to move the shift lever slowly.

ECU Data List

Shift Position

P

R

N

D

S

Shift Sensor SW-P

ON

OFF

OFF

OFF

OFF

Shift Sensor SW-R

OFF

ON

OFF

OFF

OFF

Shift Sensor SW-PR

ON

ON

OFF

OFF

OFF

Shift Sensor SW-N

OFF

OFF

ON

OFF

OFF

Shift Sensor SW-DB1

OFF

OFF

OFF

ON

ON

Shift Sensor SW-DB2

OFF

OFF

OFF

ON

ON

Shift Sensor SW-PNB

ON

OFF

ON

OFF

ON

(e) Check for DTCs.

OK:

DTC P0705-757 is not output.

(f) Turn the power switch off.

NG

GO TO STEP 3

OK

2.

CHECK FOR INTERMITTENT PROBLEMS

Click here

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

3.

CHECK SHIFT LEVER POSITION SENSOR

(a) Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A61-21 (P) - Body ground

Power switch on (IG)

Shift lever in P

11 to 14 V

Power switch on (IG)

Shift lever in any position except P

0 to 1.5 V

A61-15 (R) - Body ground

Power switch on (IG)

Shift lever in R

11 to 14 V

Power switch on (IG)

Shift lever in any position except R

0 to 1.5 V

A61-17 (PR) - Body ground

Power switch on (IG)

Shift lever in P or R

11 to 14 V

Power switch on (IG)

Shift lever in any position except P or R

0 to 1.5 V

A61-20 (N) - Body ground

Power switch on (IG)

Shift lever in N

11 to 14 V

Power switch on (IG)

Shift lever in any position except N

0 to 1.5 V

A61-26 (DB1) - Body ground

Power switch on (IG)

Shift lever in D or S

11 to 14 V

Power switch on (IG)

Shift lever in any position except D or S

0 to 1.5 V

A61-14 (DB2) - Body ground

Power switch on (IG)

Shift lever in D or S

11 to 14 V

Power switch on (IG)

Shift lever in any position except D or S

0 to 1.5 V

A61-34 (PNB) - Body ground

Power switch on (IG)

Shift lever in P, N or S

11 to 14 V

Power switch on (IG)

Shift lever in any position except P, N or S

0 to 1.5 V

*a

Component with harness connected

(Hybrid Vehicle Control ECU)

(c) Turn the power switch off.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

4.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Disconnect the C42 shift lever position sensor connector.

Click here

(b) Turn the power switch on (IG).

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C42-7 (+B) - Body ground

Power switch on (IG)

11 to 14 V

NOTICE:

Turning the power switch on (IG) with the shift lever position sensor connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

*a

Front view of wire harness connector

(to Shift Lever Position Sensor)

(d) Turn the power switch off.

(e) Reconnect the C42 shift lever position sensor connector.

NG

GO TO STEP 6

OK

5.

INSPECT SHIFT LEVER POSITION SENSOR

(a) Disconnect the C42 shift lever position sensor connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C42-7 (+B) - C42-3 (PR)

Shift lever in P

Below 1 Ω

C42-7 (+B) - C42-4 (PNB)

Below 1 Ω

C42-7 (+B) - C42-8 (P)

Below 1 Ω

C42-7 (+B) - C42-1 (DB1), C42-2 (N), C42-6 (DB2) and C42-9 (R)

10 kΩ or higher

C42-7 (+B) - C42-3 (PR)

Shift lever in R

Below 1 Ω

C42-7 (+B) - C42-9 (R)

Below 1 Ω

C42-7 (+B) - C42-1 (DB1), C42-2 (N), C42-4 (PNB), C42-6 (DB2) and C42-8 (P)

10 kΩ or higher

C42-7 (+B) - C42-2 (N)

Shift lever in N

Below 1 Ω

C42-7 (+B) - C42-4 (PNB)

Below 1 Ω

C42-7 (+B) - C42-1 (DB1), C42-3 (PR), C42-6 (DB2), C42-8 (P) and C42-9 (R)

10 kΩ or higher

C42-7 (+B) - C42-1 (DB1)

Shift lever in D

Below 1 Ω

C42-7 (+B) - C42-6 (DB2)

Below 1 Ω

C42-7 (+B) - C42-2 (N), C42-3 (PR), C42-4 (PNB), C42-8 (P) and C42-9 (R)

10 kΩ or higher

C42-7 (+B) - C42-1 (DB1)

Shift lever in S

Below 1 Ω

C42-7 (+B) - C42-4 (PNB)

Below 1 Ω

C42-7 (+B) - C42-6 (DB2)

Below 1 Ω

C42-7 (+B) - C42-2 (N), C42-3 (PR), C42-8 (P) and C42-9 (R)

10 kΩ or higher

*a

Component without harness connected

(Shift Lever Position Sensor)

(c) Reconnect the C42 shift lever position sensor connector.

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR
NG

REPLACE SHIFT LEVER POSITION SENSOR

6.

CHECK HARNESS AND CONNECTOR (SHIFT LEVER POSITION SENSOR - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the C42 shift lever position sensor connector.

(b) Disconnect the A61 hybrid vehicle control ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C42-7 (+B) - A61-1 (PSFT)

Power switch off

Below 1 Ω

C42-7 (+B) or A61-1 (PSFT) - Body ground and other terminals

Power switch off

10 kΩ or higher

*a

Front view of wire harness connector

(to Shift Lever Position Sensor)

*b

Rear view of wire harness connector

(to Hybrid Vehicle Control ECU)

(d) Reconnect the A61 hybrid vehicle control ECU connector.

(e) Reconnect the C42 shift lever position sensor connector.

OK

REPAIR OR REPLACE POWER SOURCE CIRCUIT
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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