Lexus NX manuals

Lexus NX: Pattern Select Switch Sport Mode Circuit

Lexus NX Service Manual / Engine & Hybrid System / 2ar-fxe (hybrid / Battery Control) / Hybrid Control System / Pattern Select Switch Sport Mode Circuit

DESCRIPTION

When selecting SPORT mode, the switch operation signal is sent to the ECM. Following this, the drive torque is optimally controlled to obtain a sporty feel in response to the driver's accelerator pedal operation.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM (CAN BUS CHECK)

Click here

Result

Proceed to

All of the ECUs and sensors that are currently connected to the CAN communication system are displayed.

A

None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed.

B
B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK DTC OUTPUT (HEALTH CHECK)

Click here

DTCs are output.

GO TO DTC CHART
No DTCs are output.

3.

READ VALUE USING TECHSTREAM (PATTERN SWITCH (PWR/M))

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / Hybrid Control / Data List / Pattern Switch (PWR/M).

Powertrain > Hybrid Control > Data List

Tester Display

Pattern Switch (PWR/M)

(d) Read the value displayed on the Techstream.

Powertrain > Hybrid Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Pattern Switch (PWR/M)

SPORT mode transition availability

ON or OFF

In SPORT mode: ON

Not in SPORT mode: OFF

Result

Proceed to

The Techstream display changes according to the mode switch (integration control & panel assembly) operation.

A

The Techstream display does not change according to the mode switch (integration control & panel assembly) operation.

B

(e) Turn the power switch off.

A

CHECK FOR INTERMITTENT PROBLEMS

B

4.

INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY

(a) Remove the integration control & panel assembly.

Click here

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I66-7 (P) - I66-1 (GND)

Integration control & panel assembly being turned and held at SPORT position

Below 10 Ω

Integration control & panel assembly not turned

10 kΩ or higher

I66-8 (B) - I66-1 (GND)

Integration control & panel assembly being pushed and held

Below 10 Ω

Integration control & panel assembly not pushed

10 kΩ or higher

*a

Component without harness connected

(Integration Control & Panel Assembly)

(c) Install the integration control & panel assembly.

NG

REPLACE INTEGRATION CONTROL & PANEL ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL & PANEL ASSEMBLY - BODY GROUND)

Click here

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - ECO MODE SWITCH (INTEGRATION CONTROL & PANEL ASSEMBLY))

(a) Disconnect the A35 ECM connector.

(b) Disconnect the I66 integration control & panel assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A35-9 (PWMS) - I66-7 (P)

Always

Below 1 Ω

A35-9 (PWMS) or I66-7 (P) - Body ground

Always

10 kΩ or higher

A35-43 (SPCN) - I66-8 (B)

Always

Below 1 Ω

A35-43 (SPCN) or I66-8 (B) - Body ground

Always

10 kΩ or higher

*a

Front view of wire harness connector

(to ECM)

*b

Front view of wire harness connector

(to Integration Control & Panel Assembly)

(d) Reconnect the I66 integration control & panel assembly connector.

(e) Reconnect the A35 ECM connector.

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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