Lexus NX: Back Door Motor Circuit (B2220)
DESCRIPTION
This DTC is output when the multiplex network door ECU detects a malfunction in the motor built into the power back door unit assembly set LH or RH.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2220 | Back Door Motor Circuit | Motor malfunction detected in power back door unit assembly set LH or RH |
|
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 B2220 is not output
| OK | .gif) | USE SIMULATION METHOD TO CHECK |
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| 2. | INSPECT POWER BACK DOOR UNIT ASSEMBLY SET LH |
(a) Fully open the back door.
| (b) Disconnect the 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 |
|---|---|---|
| 1 (BD+) - Body ground | Always | 10 kΩ or higher |
| 2 (BD-) - Body ground | Always | 10 kΩ or higher |
| 1 (BD+) - 2 (BD-) | Always | Below 1 MΩ |
| NG | | REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH |
|
| 3. | INSPECT POWER BACK DOOR UNIT ASSEMBLY SET RH |
(a) Fully open the back door.
| (b) Disconnect the power back door unit assembly set RH connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 (BD+2) - Body ground | Always | 10 kΩ or higher |
| 2 (BD-2) - Body ground | Always | 10 kΩ or higher |
| 1 (BD+2) - 2 (BD-2) | Always | Below 1 MΩ |
| NG | | REPLACE POWER BACK DOOR UNIT ASSEMBLY SET RH |
|
| 4. | CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH) |
(a) Disconnect the Y27 multiplex network door ECU connector.
(b) Disconnect the Y19 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 |
|---|---|---|
| Y27-7 (BD+) - Y19-1 (BD+) | Always | Below 1 Ω |
| Y27-6 (BD-) - Y19-2 (BD-) | Always | Below 1 Ω |
| Y27-7 (BD+) or Y19-1 (BD+) - Body ground | Always | 10 kΩ or higher |
| Y27-6 (BD-) or Y19-2 (BD-) - Body ground | Always | 10 kΩ or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 5. | CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET RH) |
(a) Disconnect the Y27 multiplex network door ECU connector.
(b) Disconnect the Y18 power back door unit assembly set RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| Y27-8 (BD+2) - Y18-1 (BD+2) | Always | Below 1 Ω |
| Y27-9 (BD-2) - Y18-2 (BD-2) | Always | Below 1 Ω |
| Y27-8 (BD+2) or Y18-1 (BD+2) - Body ground | Always | 10 kΩ or higher |
| Y27-9 (BD-2) or Y18-2 (BD-2) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MULTIPLEX NETWORK DOOR ECU |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
PBD Unit Pulse Sensor LH Circuit (B2226)
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 Are
PBD Unit Pulse Sensor RH Circuit (B2227)
DESCRIPTION This DTC is output when the multiplex network door ECU detects a power back door unit assembly set RH pulse malfunction. DTC No. Detection Item DTC Detection Condition Trouble Are
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 Troubl
SEE MORE:
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
If the problem only occurs in certain locations or at certain times of day, check for wave interference.
If optional components are installed, check for wave interfere
Ignition Coil "A" Primary / Secondary Circuit (P0351-P0354)
DESCRIPTION HINT:
These DTCs indicate malfunctions relating to the primary circuit.
If DTC P0351 is output, check the No. 1 ignition coil assembly (No. 1 cylinder) circuit.
If DTC P0352 is output, check the No. 2 ignition coil assembly (No. 2 cylinder) circuit.
If DTC P0353 is output, check
