Operation CHARM: Car repair manuals for everyone.
Home >> Lexus >> 2009 >> LS 600h V8-5.0L (2UR-FSE) Hybrid >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C1AED

C1AED








PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM: C1AED: Rear Sensor Communication Malfunction

DTC C1AED - Rear Sensor Communication Malfunction

DESCRIPTION

This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor.





HINT:
*1: w/o Advanced parking guidance system
*2: w/ Advanced parking guidance system

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- USE SIMULATION METHOD TO CHECK
B -- CHECK PARKING ASSIST ECU
A -- Continue to next step.
2.
CHECK CLEARANCE WARNING ECU




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE CLEARANCE WARNING ECU
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - REAR CORNER SENSOR RH)




(a) Disconnect the L19 ECU connector.
(b) Disconnect the Z4 sensor connector.
(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. CHECK HARNESS AND CONNECTOR (REAR CORNER SENSOR RH - REAR CENTER SENSOR RH)




(a) Disconnect the Z4 and Z3 sensor connectors.
(b) 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.
5. CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR RH - REAR CENTER SENSOR LH)




(a) Disconnect the Z3 and Z2 sensor connectors.
(b) 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.
6. CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - REAR CORNER SENSOR LH)




(a) Disconnect the Z2 and Z1 sensor connectors.
(b) 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.
7. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH
A -- Continue to next step.
8. REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR RH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
9. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH
A -- Continue to next step.
10. REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR LH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
11. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE CLEARANCE WARNING ECU
A -- Continue to next step.
12. REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
13. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END (ULTRASONIC SENSOR IS DEFECTIVE)
A -- Continue to next step.
14. REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR LH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
15. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END (ULTRASONIC SENSOR IS DEFECTIVE)
A -- REPLACE CLEARANCE WARNING ECU
16.
CHECK PARKING ASSIST ECU




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:





(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:






NG -- REPLACE PARKING ASSIST ECU
OK -- Continue to next step.
17. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR CORNER SENSOR RH)




(a) Disconnect the L91 ECU connector.
(b) Disconnect the Z4 sensor connector.
(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.
18. CHECK HARNESS AND CONNECTOR (REAR CORNER SENSOR RH - REAR CENTER SENSOR RH)




(a) Disconnect the Z4 and Z3 sensor connectors.
(b) 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.
19. CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR RH - REAR CENTER SENSOR LH)




(a) Disconnect the Z3 and Z2 sensor connectors.
(b) 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.
20. CHECK HARNESS AND CONNECTOR (REAR CENTER SENSOR LH - REAR CORNER SENSOR LH)




(a) Disconnect the Z2 and Z1 sensor connectors.
(b) 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.
21. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- USE SIMULATION METHOD TO CHECK
B -- REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH
A -- Continue to next step.
22. REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR RH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
23. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH
A -- Continue to next step.
24. REPLACE REAR CORNER NO. 1 ULTRASONIC SENSOR LH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
25. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





C -- END (ULTRASONIC SENSOR IS DEFECTIVE)
B -- REPLACE PARKING ASSIST ECU
A -- Continue to next step.
26. REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR RH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
27. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END (ULTRASONIC SENSOR IS DEFECTIVE)
A -- Continue to next step.
28. REPLACE REAR CENTER NO. 1 ULTRASONIC SENSOR LH




(a) Replace the ultrasonic sensor with a normally functioning sensor Removal.
NEXT -- Continue to next step.
29. CHECK DTC OUTPUT
(a) Clear the DTCs Intuitive Parking Assist System.
(b) Check for DTCs Intuitive Parking Assist System.

Result





B -- END (ULTRASONIC SENSOR IS DEFECTIVE)
A -- REPLACE PARKING ASSIST ECU
pro multis · About Operation CHARM