Lexus RX (RX 350L, RX450h) 2016-2022 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

Click here

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

Click here

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

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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