Scan Tool Method
Multiplex self-diagnostic system OBD-II DTCs are retrieved through Data Link Connector 3 (DLC3). DLC3 is located under left side of instrument panel. Connect scan tool to DLC3. Turn ignition on. Follow LEXUS or OBD-II scan tool instructions to retrieve DTCs. See MULTIPLEX DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS table. If DTC(s) are present, perform appropriate test. See DIAGNOSTIC TESTS .
MULTIPLEX DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS
| OBD-II DTC/2-Digit DTC | Description | ||
|---|---|---|---|
| B1211/11 | Driver's Door ECU To Body ECU Communication | ||
| B1212/12 | Passenger's Front Door ECU To Body ECU Communication | ||
| B1214/14 | Door System Bus Communication Circuit Short To Power | ||
| B1215/15 | Door System Bus Communication Circuit Short To Ground | ||
| B1216/16 | Right Rear Door ECU To Body ECU Communication | ||
| B1217/17 | Left Rear Door ECU To Body ECU Communication | ||
| B1221/21 | (1) Power Window Master Switch Circuit | ||
| B1222/22 | (1) Driver's Door Lock Control Switch Circuit | ||
| B1223/23 | (1) Passenger's Front Window Switch Circuit | ||
| B1224/24 | (1) Passenger's Door Lock Control Switch Circuit | ||
| B1225/25 | (1) Right Rear Window Switch Circuit | ||
| B1226/26 | (1) Left Rear Window Switch Circuit | ||
| B1231/31 | Driver's Jam Protection Limit Switch Circuit | ||
| B1232/32 | Driver's Jam Protection Pulse Switch Circuit | ||
| B1233/33 | Passenger's Front Jam Protection Limit Switch Circuit | ||
| B1234/34 | Passenger's Front Jam Protection Pulse Switch Circuit | ||
| B1235/35 | Right Rear Jam Protection Limit Switch Circuit | ||
| B1236/36 | Right Rear Jam Protection Pulse Switch Circuit | ||
| B1237/37 | Left Rear Jam Protection Limit Switch Circuit | ||
| B1238/38 | Left Rear Jam Protection Pulse Switch Circuit | ||
| B1241/41 | Body ECU Switch Circuit Diagnosis | ||
| B1242/42 | Wireless Door Lock Tuner Circuit Malfunction | ||
| B1244/44 | Light Sensor Circuit Malfunction | ||
| B1256/56 | Instrument Control Panel Circuit Diagnosis | ||
| B1261/61 | ECM To Body ECU Communication | ||
| B1272/72 | Memory Power Seat ECU To Body ECU Communication | ||
| B1273/73 | Sliding Roof Control ECU To Body ECU Communication | ||
| B1275/75 | Accessory Bus Buffer To Body ECU Communication | ||
| B1276/76 | A/C And Combination Meter Integrated ECU To Body ECU Communication | ||
| B1277/77 | Instrument Control Panel To Body ECU Communication | ||
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