C1AEE

PARK ASSIST / MONITORING: ADVANCED PARKING GUIDANCE SYSTEM: C1AEE: APGS Sensor Communication Circuit
C1AEE - APGS Sensor Communication Circuit

DESCRIPTION

The parking assist ECU communicates with the No. 1 ultrasonic sensor (front left side sensor), and the No. 1 ultrasonic sensor (front right side sensor) via the No. 1 ultrasonic sensor (front left side sensor). This DTC is stored when the parking assist ECU judges that there is an abnormality in the communication circuit to the No. 1 ultrasonic sensor (front left side sensor) or the No. 1 ultrasonic sensor (front right side sensor) that is connected via the front left side sensor, immediately after the power switch is turned on (IG), or while the sensors are operating (neither P nor R is selected and the vehicle is not stopped).





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* When "System initializing" message is displayed on the navigation receiver assembly after the battery terminal disconnected, correct the steering angle neutral point Initialization.
* Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the advanced parking guidance system may be needed Calibration.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT LEFT SIDE SENSOR)

(a) Disconnect the L64 connector from the parking assist ECU.

(b) Disconnect the C2 connector from the No. 1 ultrasonic sensor (front left side sensor).

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK NO. 1 ULTRASONIC SENSOR

(a) Remove the No. 1 ultrasonic sensor (front left side sensor) Removal.

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





Standard Resistance:





Text in Illustration





NG -- REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SIDE SENSOR) Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT LEFT SIDE SENSOR - FRONT RIGHT SIDE SENSOR)

(a) Disconnect the C2 connector from the No. 1 ultrasonic sensor (front left side sensor).

(b) Disconnect the C1 connector from the No. 1 ultrasonic sensor (front right side sensor).

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT LEFT SIDE SENSOR) C1AE0

NEXT -- Continue to next step.

5. CHECK DTC OUTPUT

(a) Clear the DTCs Advanced Parking Guidance System.

(b) Check for DTCs Advanced Parking Guidance System.

Result:





B -- END (FRONT LEFT SIDE SENSOR WAS DEFECTIVE)
A -- Continue to next step.

6. REPLACE NO. 1 ULTRASONIC SENSOR (FRONT RIGHT SIDE SENSOR) C1AE5

NEXT -- Continue to next step.

7. CHECK DTC OUTPUT

(a) Clear the DTCs Advanced Parking Guidance System.

(b) Check for DTCs Advanced Parking Guidance System.

Result:





B -- END (FRONT RIGHT SIDE SENSOR WAS DEFECTIVE)

A -- REPLACE PARKING ASSIST ECU Removal