Dynamic Radar Cruise Control System - Distance Control Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT DISTANCE CONTROL ECU
INSPECT DISTANCE CONTROL ECU CIRCUIT
INSPECT STEERING PAD SWITCH ASSEMBLY
CHECK HARNESS AND CONNECTOR (ECM - SPIRAL CABLE)
DYNAMIC RADAR CRUISE CONTROL SYSTEM - 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
- When the distance control ECU is replaced with a new one, initialization must be performed .
| 1.INSPECT DISTANCE CONTROL ECU |
Turn the engine switch on (IG).
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 |
| | PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
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| 2.INSPECT DISTANCE CONTROL ECU CIRCUIT |
Disconnect the J17 connector.
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 |
| | REPLACE DISTANCE CONTROL ECU |
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| 3.INSPECT STEERING PAD SWITCH ASSEMBLY |
Remove the steering pad .
Disconnect K1 connector from the spiral cable.
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 |
| | REPLACE STEERING PAD SWITCH |
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| 4.CHECK HARNESS AND CONNECTOR (ECM - SPIRAL CABLE) |
- 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.
Disconnect the J17 connector from the distance control ECU.
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 |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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