Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: On-vehicle Inspection

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual / Vehicle Exterior / Power Outlets (ext) / Towing Converter Relay / On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT TOWING CONVERTER RELAY

HINT:

Remove interior parts so that the towing converter relay can be seen.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
1 (CTLB) - Body ground	Light control switch off	Below 1 V
1 (CTLB) - Body ground	Light control switch in tail position	11 to 14 V
2 (CTLS) - Body ground	Turn signal switch off	Below 1 V
	Turn signal switch on (left turn)	Below 1 V ←→ 11 to 14 V
	Brake pedal depressed	11 to 14 V
	Turn signal switch on (left turn) with brake pedal depressed	Below 1 V ←→ 11 to 14 V
3 (CTLA) - Body ground	Light control switch off	Below 1 V
3 (CTLA) - Body ground	Light control switch in tail position	11 to 14 V
4 (TRNL) - Body ground	Turn signal switch off	Below 1 V
4 (TRNL) - Body ground	Turn signal switch on (left turn)	Below 1 V ←→ 11 to 14 V
6 (CTRS) - Body ground	Turn signal switch off	Below 1 V
	Turn signal switch on (right turn)	Below 1 V ←→ 11 to 14 V
	Brake pedal depressed	11 to 14 V
	Turn signal switch on (right turn) with brake pedal depressed	Below 1 V ←→ 11 to 14 V
8 (COB1) - Body ground	Always	11 to 14 V
9 (COS1) - Body ground	Brake pedal not depressed	Below 1 V
9 (COS1) - Body ground	Brake pedal depressed	11 to 14 V
10 (TRNR) - Body ground	Turn signal switch off	Below 1 V
10 (TRNR) - Body ground	Turn signal switch on (right turn)	Below 1 V ←→ 11 to 14 V

If the result is not as specified, replace the towing converter relay.

*a	Component with harness connected (Towing Converter Relay)

(b) Disconnect the towing converter relay connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
5 (COZ1) - Body ground	Always	Below 1 Ω

If the result is not as specified, repair or replace the harness or connector.

*a	Front view of wire harness connector (to Towing Converter Relay)

Components

COMPONENTS ILLUSTRATION *1 DECK BOARD ASSEMBLY *2 DECK SIDE TRIM BOX RH *3 REAR DECK FLOOR BOX *4 REAR FLOOR FINISH PLATE *5 REAR NO. 3 FLOOR BOARD *6 REAR NO. 4 FLOOR BO ...

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during towi ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Oil Pump: Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE OIL PUMP RELIEF VALVE (a) Using a 27 mm socket wrench, remove the oil pump relief valve plug from the oil pump cover. (b) Remove the oil pump relief valve spring and oil pump relief valve from the oil pump cover hole. 2. REMOVE OIL PUMP COVER (a) Rem ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Check Bus 2 Line for Short to +B
DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminal 18 (CA4H) of the network gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 17 (CA4L) of the network gateway ECU and terminal 16 (BAT) of the DLC3. Symptom Trouble ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: On-vehicle Inspection

Components

Removal

Other materials:

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

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