Distance Control Switch Circuit

DESCRIPTION

The distance control switch is used to set the distance for vehicle-to-vehicle distance control mode. The distance control switch is installed in the steering pad switch assembly. The vehicle-to-vehicle distance set value can be changed by operating the steering pad switch assembly (distance control switch) while the dynamic radar cruise control system is controlling vehicle speed in vehicle-to-vehicle distance control mode.

WIRING DIAGRAM CAUTION / NOTICE / HINT

NOTICE:

• Before replacing the ECM, refer to Registration.

  w/o Smart Key System: Click here

  w/ Smart Key System: Click here

• The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

  Click here

• When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
• If the forward recognition camera has been replaced with a new one, be sure to perform Forward Recognition Camera Learning.

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PROCEDURE

1. READ VALUE ON TECHSTREAM (DISTANCE CONTROL SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Radar Cruise 2 / Data List.

(e) Read the Data List according to the display on the Techstream.

Powertrain > Radar Cruise2 > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
Distance Control Switch	Distance control switch signal	ON or OFF	ON: Distance control switch on OFF: Distance control switch off	-

OK:

The Data List item shown in the table changes according to the operation of the steering pad switch assembly (distance control switch).

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

1. INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

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(b) Inspect the steering pad switch assembly.

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NG

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

1. INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

(a) Remove the spiral cable with sensor sub-assembly.

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(b) Inspect the spiral cable with sensor sub-assembly.

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NG

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

OK

1. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA, ECM AND BODY GROUND)

(a) Disconnect the S8 spiral cable with sensor sub-assembly connector.

(b) Disconnect the F46 forward recognition camera connector.

(c) Disconnect the E20 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
S8-12 (DIST) - F46-3 (LKSW)	Always	Below 1 Ω
S8-2 (ECC) - E20-21 (ECCS)	Always	Below 1 Ω
S8-12 (DIST) or F46-3 (LKSW) - Body ground	Always	10 kΩ or higher
S8-2 (ECC) or E20-21 (ECCS) - Body ground	Always	10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

(a) Disconnect the E20 ECM connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
S8-2 (ECC) or E20-21 (E1) -Body ground	Always	Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. CHECK ECM (ECM TERMINALS)

(a) Disconnect the E20 and E17 ECM connectors.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E20-21 (ECCS) - E17-3 (E1)	Always	Below 1 Ω

OK

REPLACE FORWARD RECOGNITION CAMERA

NG

REPLACE ECM