Distance Control Switch Circuit

DESCRIPTION

The distance control switch sets the vehicle-to-vehicle distance control mode. The distance control switch is installed in the steering pad switch. The vehicle-to-vehicle distance set value can be changed by operating the steering pad switch (distance control switch) while the dynamic radar cruise control system is in operation. The steering pad switch uses the BEAN to communicate with each ECU. Therefore, it does not have a direct connection with the ECM. If there are any malfunctions in the communication line of the steering pad switch, one or more DTCs in the multiplex communication system are output.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

When the distance control ECU is replaced with a new one, initialization must be performed (Click here).

1. INSPECT DISTANCE CONTROL ECU

1. Turn the engine switch on (IG).

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   J17-16 (MODE) - J17-12 (GND)	Distance control switch ON (pushed)	0 to 2 V
   	Distance control switch OFF (pushed)	10 to 14 V

OK	PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2. INSPECT DISTANCE CONTROL ECU CIRCUIT

1. Disconnect the J17 connector.

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

Standard resistance:

Tester connection	Condition	Specified condition
J17-16 (MODE) - Body ground	Distance control switch ON (pushed)	Below 1 Ω
	Distance control switch OFF (pushed)	10 kΩ or higher

OK	REPLACE DISTANCE CONTROL ECU

NG

3. INSPECT STEERING PAD SWITCH ASSEMBLY

1. Remove the steering pad (Click here).
   

2. Disconnect K1 connector from the spiral cable.

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   K1-4 (DIST) - K1-6 (ECC)	Distance control switch ON (pushed)	Below 2.5 Ω
   K1-4 (DIST) - K1-6 (ECC)	Distance control switch OFF (pushed)	10 kΩ or higher

NG	REPLACE STEERING PAD SWITCH

OK

4. CHECK HARNESS AND CONNECTOR (ECM - SPIRAL CABLE)

NOTICE:

The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the page shown in the brackets.

HINT:

1. Removal (Click here)
   
2. Installation (Click here)
   

1. Remove the spiral cable.

2. Disconnect the J17 connector from the distance control ECU.

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

Standard resistance:

Tester Connection	Specified Condition
J24-11 (DIST) - J17-16 (MODE)	Below 1 Ω
J24-11 - Body ground	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE SPIRAL CABLE