Toyota Corolla Cross: PBD Unit Pulse Sensor LH Circuit No Signal (B222631)
DESCRIPTION
This DTC is output when the multiplex network door ECU detects a power back door unit assembly set LH pulse malfunction.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
B222631 | PBD Unit Pulse Sensor LH Circuit No Signal |
Multiplex network door ECU detects power back door unit assembly set LH pulse 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. |
CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Back Door > Clear DTCs
|
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| 2. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Back Door > Trouble Codes|
Result | Proceed to |
|---|---|
|
B222631 is output | A |
|
B222631 is not output |
B |
| B |
.gif) | USE SIMULATION METHOD TO CHECK |
|
| 3. |
CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH) |
(a) Disconnect the U40 multiplex network door ECU connector.
(b) Disconnect the U14 power back door unit assembly set LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
U40-11 (DSG) - U14-4 (DSG) |
Always | Below 1 Ω |
|
U40-4 (DSV) - U14-3 (DSV) |
Always | Below 1 Ω |
|
U40-5 (DS2) - U14-6 (DS2) |
Always | Below 1 Ω |
|
U40-13 (DS1) - U14-5 (DS1) |
Always | Below 1 Ω |
|
U40-11 (DSG) or U14-4 (DSG) - Body ground |
Always | 10 kΩ or higher |
|
U40-4 (DSV) or U14-3 (DSV) - Body ground |
Always | 10 kΩ or higher |
|
U40-5 (DS2) or U14-6 (DS2) - Body ground |
Always | 10 kΩ or higher |
|
U40-13 (DS1) or U14-5 (DS1) - Body ground |
Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. |
CHECK MULTIPLEX NETWORK DOOR ECU |
(a) Disconnect the U14 power back door unit assembly set LH connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
U14-4 (DSG) - Body ground |
Always | Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
U14-5 (DS1) - Body ground |
Always | 7 V or higher |
|
U14-6 (DS2) - Body ground |
Always | 7 V or higher |
|
U14-3 (DSV) - Body ground |
Always | 7 V or higher |
| NG | | REPLACE MULTIPLEX NETWORK DOOR ECU |
|
| 5. |
CHECK POWER BACK DOOR UNIT ASSEMBLY SET LH |
(a) Using an oscilloscope, check the waveform of each terminal from the rear of the U40 multiplex network door ECU connector.
|
*a | Component with harness connected (Multiplex Network Door ECU) |
*b | Waveform (CH1) |
|
*c | Waveform (CH2) |
- | - |
Measurement Condition:
|
Item | Condition |
|---|---|
|
Tester Connection |
|
| Tool setting |
2 V/DIV., 2 ms./DIV. |
|
Vehicle condition | Open and close the back door by hand. |
HINT:
The period changes in accordance to the speed at which the back door is opened and closed by hand.
OK:
The waveform displayed is as shown in the illustration.
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH |
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