INSPECTION
PROCEDURE
1. INSPECT SEMICONDUCTOR POWER INTEGRATION ECU
(a) IG2 RELAY:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the semiconductor power integration ECU. |
|
(b) EFI-MAIN RELAY:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the semiconductor power integration ECU. |
|
(c) A/F RELAY:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the semiconductor power integration ECU. |
|
(d) H-LP RH-LO RELAY:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
1E-2 - Battery negative (-) | Battery positive (+) → B-1 Battery negative (-) → 1D-8 | 11 to 14 V |
If the result is not as specified, replace the semiconductor power integration ECU.
(e) H-LP LH-LO RELAY:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition | Specified Condition |
---|---|---|
1E-3 - Battery negative (-) | Battery positive (+) → B-1 Battery negative (-) → 1D-8 | 11 to 14 V |
If the result is not as specified, replace the semiconductor power integration ECU.
(f) Semiconductor power integration ECU ground:
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the semiconductor power integration ECU. |
|
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System (w/o Automatic Headlight Beam Level Control System): Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System Pre-collision Sys ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Vehicle Stability Control System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE If there are no DTCs output and the problem still occurs, check the suspected areas for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page. NOTICE: When replacing the skid control ECU (brake actuator assembly), senso ...