Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: PBD Touch Sensor LH Circuit (B222A)
DESCRIPTION
This DTC is stored when the multiplex network door ECU detects a malfunction in the power back door sensor assembly LH touch sensor.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B222A | PBD Touch Sensor LH Circuit | Multiplex network door ECU detects power back door sensor assembly LH touch sensor malfunction |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the multiplex network door ECU has been removed and installed or replaced, or if any of the connectors have been disconnected, initialize the power back door system.
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Back Door / Trouble Codes.
(e) Clear the DTCs.
Body Electrical > Back Door > Clear DTCs(f) Recheck for DTCs.
Body Electrical > Back Door > Trouble CodesOK:
DTC B222A is not output.
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
|
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| 2. | READ VALUE USING TECHSTREAM |
(a) Enter the following menus: Body Electrical / Back Door / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Back Door > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| PBD Touch Sensor (Left) | Power back door sensor assembly LH signal | OFF, ON or Open | OFF: Power back door sensor assembly LH not pressed ON: Power back door sensor assembly LH pressed Open: Power back door sensor assembly LH circuit open | - |
| Tester Display |
|---|
| PBD Touch Sensor (Left) |
| Result | Proceed to |
|---|---|
| On the Techstream screen, OFF or ON is displayed accordingly | A |
| On the Techstream screen, OFF or ON is not displayed accordingly or Open is displayed for power back door sensor assembly LH | B |
| A | | REPLACE MULTIPLEX NETWORK DOOR ECU |
|
| 3. | INSPECT POWER BACK DOOR SENSOR ASSEMBLY LH |
(a) Remove the power back door sensor assembly LH.
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(b) Inspect the power back door sensor assembly LH.
Click here
| NG | | REPLACE POWER BACK DOOR SENSOR ASSEMBLY LH |
|
| 4. | CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR SENSOR ASSEMBLY LH) |
(a) Disconnect the Z16 multiplex network door ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Z16-26 (OSL) - Z3-1 (OSL) | Always | Below 1 Ω |
| Z16-24 (OSE) - Z3-2 (OSLE) | Always | Below 1 Ω |
| Z16-26 (OSL) or Z3-1 (OSL) - Body ground | Always | 10 kΩ or higher |
| Z16-24 (OSE) or Z3-2 (OSLE) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
PBD Unit Pulse Sensor RH Circuit (B2227)
DESCRIPTION This DTC is stored when the multiplex network door ECU detects an error in the power back door unit assembly set RH pulse signal. DTC No. Detection Item DTC Detection Condition Tr ...
PBD Touch Sensor RH Circuit (B222B)
DESCRIPTION This DTC is stored when the multiplex network door ECU detects a malfunction of the power back door sensor assembly RH touch sensor. DTC No. Detection Item DTC Detection Condition ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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