Inspection Procedure

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Check wire harness.

PREPARATION:

Pull out the ECU connectors mentioned below.

DTC DETECTION ITEM

Wire harness side connector of ECU	Terminal
Accessory bus buffer - Gateway ECU	BUS-MPD2

CHECK:

Check the continuity between the connectors on the wire harness.

Fig 1: Checking Continuity Of Wire Harness Between Connectors

OK:

Continuity

NG : Repair or replace wire harness.
OK : Replace the accessory bus buffer.