Lexus NX: PBD Touch Sensor LH Circuit (B222A)
DESCRIPTION
This DTC is output when the multiplex network door ECU detects a power back door sensor assembly LH touch sensor malfunction.
| 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 replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU has been performed, initialize the power back door system.
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PROCEDURE
| 1. | CHECK FOR DTC |
(a) Clear the DTCs.
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(b) Check for DTCs.
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OK:
DTC B222A is not output
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
|
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| 2. | READ VALUE USING TECHSTREAM |
(a) Read the Data List according to the display on the Techstream.
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| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| PBD Touch Sensor (Left) | Power back door sensor assembly LH signal | ON, OFF or Open | ON: Power back door sensor assembly LH pressed OFF: Power back door sensor assembly LH not pressed Open: Power back door sensor assembly LH circuit open | - |
| Tester Display |
|---|
| PBD Touch Sensor (Left) |
| Result | Proceed to |
|---|---|
| On the Techstream screen, ON or OFF is displayed accordingly | A |
| On the Techstream screen, ON or OFF 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.
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| 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 Y26 multiplex network door ECU connector.
(b) Disconnect the Y9 power back door sensor assembly LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Y26-26 (OSL) - Y9-1 (OSL) | Always | Below 1 Ω |
| Y26-24 (OSE) - Y9-2 (OSLE) | Always | Below 1 Ω |
| Y26-26 (OSL) or Y9-1 (OSL) - Body ground | Always | 10 kΩ or higher |
| Y26-24 (OSE) or Y9-2 (OSLE) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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