C1627

PARK ASSIST / MONITORING: ADVANCED PARKING GUIDANCE SYSTEM: C1627: Vehicle Height Sensor Voltage is Low or High
C1627 - Vehicle Height Sensor Voltage is Low or High

DESCRIPTION

The rear height control sensor sub-assembly RH and headlight leveling ECU assembly are connected to the parking assist ECU. The parking assist ECU shares the vehicle height signals received from the rear height control sensor sub-assembly RH with the lighting system (auto leveling). The headlight leveling ECU assembly supplies power to the rear height control sensor sub-assembly RH via the parking assist ECU. This DTC is stored when the parking assist ECU judges that the power supply voltage for the rear height control sensor sub-assembly RH is too low or too high.





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.
* When the headlight leveling ECU assembly is replaced, perform initialization for the lighting system Initialization
* If initialization is necessary while performing an inspection, perform initialization first and then proceed to the next step.

PROCEDURE

1. CHECK DTC OUTPUT

(a) Clear the DTCs Advanced Parking Guidance System.

(b) Check for DTCs Advanced Parking Guidance System.

Result:





HINT
* If the power source voltage output by the headlight leveling ECU assembly is abnormal, the headlight leveling warning light may come on.
* If the DTC is not output again when rechecking for DTCs, it may have been stored due to a temporarily abnormal voltage.
* If DTC C1627 is output frequently, duplicate the problem symptoms and perform the inspection again, even though the DTC is not output when rechecking for DTCs How To Proceed With Troubleshooting.

B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - PARKING ASSIST ECU)

(a) Disconnect the A48 connector from the headlight leveling ECU assembly.

(b) Disconnect the L65 connector from the parking assist ECU.

(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.

3. CHECK HEADLIGHT LEVELING ECU ASSEMBLY

(a) Reconnect the A48 connector to the headlight leveling ECU assembly.

(b) Disconnect the L65 connector from the parking assist ECU.

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

Standard Voltage:





NG -- REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Removal
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY - PARKING ASSIST ECU)

(a) Disconnect the L65 connector from the parking assist ECU.

(b) Disconnect the S3 connector from the rear height control sensor sub-assembly RH.

(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.

5. CHECK REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY

(a) Reconnect the L65 connector to the parking assist ECU.

(b) Disconnect the S3 connector from the rear height control sensor sub-assembly RH.

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

Standard Voltage:





NG -- REPLACE PARKING ASSIST ECU Removal

OK -- REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH Removal