Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WIRE HARNESS (MULTIPLEX NETWORK SWITCH)

Disconnect the P19 connector.

Fig 1: Identifying P19 Connector Terminals
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Measure the voltage and resistance according to the value(s) in the table below.

Standard voltage

STANDARD VOLTAGE SPECIFICATION TABLE

Tester Connection	Condition	Specified Condition
P19-12 (BDR) - Body ground	Always	10 to 14 V

Standard resistance

STANDARD VOLTAGE SPECIFICATION TABLE

Tester Connection	Condition	Specified Condition
P19-7 (GND) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE