Dynamic Radar Cruise Control System Ecu Power Source Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK DRIVING SUPPORT ECU ASSEMBLY (B VOLTAGE)
CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BODY GROUND)
DYNAMIC RADAR CRUISE CONTROL SYSTEM - ECU Power Source Circuit |
DESCRIPTION
This circuit provides power to operate the driving support ECU assembly. The driving support ECU assembly determines information about the vehicle in front based on data from the radar sensor, and then decides how much acceleration and/or deceleration is needed to maintain the set distance. The driving support ECU assembly also requests the skid control ECU to apply brakes and sounds the pre-crash safety city buzzer.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK DRIVING SUPPORT ECU ASSEMBLY (B VOLTAGE) |
Disconnect the E164 driving support ECU assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Condition
| Specified Condition
|
E164-7 (B) - Body ground
| Engine switch on (IG)
| 11 to 14 V
|
Text in Illustration*a
| Front view of wire harness connector
(to Driving Support ECU Assembly)
|
| | REPAIR OR REPLACE POWER SOURCE CIRCUIT |
|
|
| 2.CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BODY GROUND) |
Disconnect the E164 driving support ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
E164-28 (GND) - Body ground
| Always
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK |
|
|
|
| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here) |
|
