DESCRIPTION
DTC C1621 is stored if the parking assist ECU determines that the input/output signal communication with the rear television camera assembly is abnormal.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
C1621 | Back Camera Current Malfunction | Rear television camera assembly power supply malfunction |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY) |
(a) Disconnect the J158 parking assist ECU connector.
(b) Disconnect the Z11 rear television camera assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J158-33 (CB+) - Z11-6 (CB+) | Always | Below 1 Ω |
J158-32 (CGND) - Z11-5 (CGND) | Always | Below 1 Ω |
J158-33 (CB+) or Z11-6 (CB+) - Body ground | Always | 10 kΩ or higher |
J158-32 (CGND) or Z11-5 (CGND) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. | CHECK PARKING ASSIST ECU (CB+, CGND) |
(a) Connect the J158 parking assist ECU connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J158-32 (CGND) - Body ground | Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Switch Condition | Specified Condition |
---|---|---|
J158-33 (CB+) - J158-32 (CGND) | Engine switch on (IG) | 5.5 to 7.05 V |
OK | ![]() | REPLACE REAR TELEVISION CAMERA ASSEMBLY |
NG | ![]() | REPLACE PARKING ASSIST ECU |
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Air Conditioning System: Lost Communication with Rear Panel LIN (B14B3)
DESCRIPTION The No. 2 air conditioning control assembly communicates with the air conditioning amplifier assembly via LIN communication. If the LIN communication system is malfunctioning, the air conditioning amplifier assembly does not operate even if the No. 2 air conditioning control assembly is ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Vehicle Stability Control System: Zero Point Calibration of Yaw Rate Sensor Undone (X204C)
DESCRIPTION Code Tester Display Measurement Item Trouble Area X204C Zero Point Calibration of Yaw Rate Sensor Undone History of incomplete yaw rate sensor zero point calibration
Sensor installation
Yaw rate and acceleration sensor (airbag sensor assembly)*1
Yaw rate sensor ...