Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: ABS Pump Motor Control Circuit Voltage Out of Range (C052C1C)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C052C1C | ABS Pump Motor Control Circuit Voltage Out of Range | When the +BS terminal voltage is from 9.5 to 17.4 V with the motor relay and motor fail safe relay OFF, an open or short in motor circuit continues for 2 seconds or more. | Skid control ECU (brake actuator assembly) |
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
After replacing the skid control ECU (brake actuator assembly), perform "Calibration".
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PROCEDURE
| 1. | CHECK HARNESS AND CONNECTOR (GND2 TERMINAL) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connectors.
OK:
The connector is securely connected.
(b) Disconnect the A41 skid control ECU (brake actuator assembly) connector.
(c) Check both the connector case and the terminals for deformation and corrosion.
OK:
No deformation or corrosion.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A41-30 (GND2) - Body ground | 1 minute or more after disconnecting the cable from the negative (-) battery terminal | Below 1 Ω |
| OK | .gif) | REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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