Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Terminals Of Ecu
TERMINALS OF ECU
CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
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| *A | w/o Seat Heater System | *B | w/ Seat Heater System |
(a) Disconnect the J43 air conditioning amplifier assembly connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| J43-2 (IG+) - J43-4 (GND) | GR - W-B | Power source (IG) | Engine switch on (IG) | 11 to 14 V |
| J43-2 (IG+) - J43-4 (GND) | GR - W-B | Power source (IG) | Engine switch off | Below 1 V |
| J43-1 (B) - J43-4 (GND) | R - W-B | Battery power supply | Always | 11 to 14 V |
| J43-4 (GND) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
(c) Reconnect the J43 air conditioning amplifier assembly connector.
(d) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| J43-17 (FDEF) - J43-4 (GND) | W - W-B | Wiper Deicer signal | Engine switch on (IG), Front wiper deicer switch off | 11 to 14 V |
| J43-17 (FDEF) - J43-4 (GND) | W - W-B | Wiper Deicer signal | Engine switch on (IG), Front wiper deicer switch on | Below 2.2 V |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE:
If the battery voltage is low, the seat heater system may not operate. When "Operation of Electrical Items Restricted." is not displayed on the multi-information disp ...
Data List / Active Test
DATA LIST / ACTIVE TEST ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive func ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Electrical Key Oscillator (for Front Floor): Installation
INSTALLATION PROCEDURE 1. INSTALL NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY (a) Engage the clamp to install the No. 1 indoor electrical key antenna assembly as shown in the illustration. NOTICE: Be careful when installing the No. 1 indoor electrical key antenna assembly. If the No. 1 indoor elect ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Sfi System: Throttle / Pedal Position Sensor / Switch "A" Circuit Short to Ground (P012011,P012015,P01201C,P022011,P022015,P21352B)
DESCRIPTION HINT: These DTCs relate to the throttle position sensor. The throttle position sensor is mounted on the throttle body with motor assembly and detects the opening angle of the throttle valve. This sensor is a non-contact type sensor. It uses Hall-effect elements in order to yield accurate ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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