DESCRIPTION
Output to the rear seat cushion heater temperature sensor stops if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
---|---|---|---|
B14C2 | Rear Right Seat Heat Sensor Circuit | Seat heater temperature sensor malfunction |
|
WIRING DIAGRAM
PROCEDURE
1. | CLEAR DTC |
(a) Clear the DTCs.
Click here
|
2. | CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B14C2 is not output.
OK | ![]() | USE SIMULATION METHOD TO CHECK |
|
3. | INSPECT REAR SEAT CUSHION HEATER RH (SEAT HEATER ASSEMBLY) |
(a) Remove the rear seat cushion heater RH (seat heater assembly).
for 60/40 Split Seat Type: Click here
for Captain Seat Type: Click here
(b) Inspect the rear seat cushion heater RH (seat heater assembly).
for 60/40 Split Seat Type: Click here
for Captain Seat Type: Click here
NG | ![]() | REPLACE REAR SEAT CUSHION HEATER RH (SEAT HEATER ASSEMBLY) |
|
4. | CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - REAR SEAT CUSHION HEATER RH (SEAT HEATER ASSEMBLY)) |
(a) Disconnect the J42 and J48 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J42-23 (TFAR) - x5-5 (THR) | Always | Below 1 Ω |
J42-23 (TFAR) or x5-5 (THR) - Body ground | Always | 10 kΩ or higher |
J48-21 (SG-8) - x5-2 (PR) | Always | Below 1 Ω |
J48-21 (SG-8) or x5-2 (PR) - Body ground | Always | 10 kΩ or higher |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. | REPLACE SEAT HEATER CONTROL SUB-ASSEMBLY (FOR REAR RH SIDE) |
(a) Temporarily replace the seat heater control sub-assembly (for rear RH side) with a new or known good one.
Click here
|
6. | CLEAR DTC |
(a) Clear the DTCs.
Click here
|
7. | CHECK FOR DTC |
(a) Check for DTCs.
Click here
OK:
DTC B14C2 is not output.
OK | ![]() | END (SEAT HEATER CONTROL SUB-ASSEMBLY (FOR REAR RH SIDE) WAS DEFECTIVE) |
NG | ![]() | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Evaporator Temperature Sensor: Inspection
INSPECTION PROCEDURE 1. INSPECT NO. 1 COOLER THERMISTOR (a) Measure the resistance according to the value(s) in the table below. *a Component without harness connected (No. 1 Cooler Thermistor) *b Sensing Portion *c Resistance (kΩ) *d Temperature (°C (°F)) *e Allowable R ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Terminals Of Ecu
TERMINALS OF ECU HINT: Check from the rear of the connector while it is connected to the components. RADIO RECEIVER ASSEMBLY Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition J151-1 (VMTF) - J148-1 (GND1) Y - W-B Visual mute signal Engine swi ...