Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: 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 | | 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 | | Light control switch in tail position | 11 to 14 V | | 4 (TRNL) - Body ground | Turn signal switch off | Below 1 V | | 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 | | Brake pedal depressed | 11 to 14 V | | 10 (TRNR) - Body ground | Turn signal switch off | Below 1 V | | 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.
| (c) Measure the resistance according to the value(s) in the table below. 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 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) 2016-2026 Repair Manual > Lumbar Switch: Inspection
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual