DESCRIPTION
This DTC is output by the 4WD ECU assembly if a malfunction occurs in the linear solenoid power supply system.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
C120C | Linear Solenoid Power Supply System Malfunction |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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HINT:
Check the condition of each related circuit connector before troubleshooting.
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PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (IG1 TERMINAL) |
(a) Disconnect the R10 4WD ECU assembly connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Switch Condition | Specified Condition |
---|---|---|
R10-3 (IG1) -Body ground | Engine switch on (IG) | 11 to 14 V |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. | CHECK HARNESS AND CONNECTOR (GND TERMINAL) |
(a) Turn the engine switch off.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
R10-4 (GND) -Body ground | Always | Below 1 Ω |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | RECONFIRM DTC |
(a) Connect the R10 4WD ECU assembly connector.
(b) Clear the DTCs.
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(c) Turn the engine switch off.
(d) Turn the engine switch on (IG).
(e) Check that no DTCs other than DTC C120C are output.
Click here
Result | Proceed to |
---|---|
DTCs other than C120C are not output | A |
DTCs other than C120C are output | B |
A | ![]() | REPLACE 4WD ECU ASSEMBLY |
B | ![]() | REPAIR CIRCUIT INDICATED BY OUTPUT CODE |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Steering System: PIG Power Supply Voltage (C1552,C1554)
DESCRIPTION If a problem occurs in the system, the power source relay circuit and the motor relay circuit are shut off to stop power assist. The ECU must be replaced when there is a problem with the relays because the relays are built into the ECU. DTC No. Detection Item DTC Detection Conditi ...
Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Lexus Display
Audio system: Phonebook
Contact settings
Individual phonebooks from up to 5 phones can be registered to the
system.
The data for 2500 contacts (up to 4 numbers per contact) can be registered
into the system's phonebook.
"Contacts/Call History" screen
Go to "Contacts/Call History": "MENU" button → "Setup" → "Ph ...