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
Passenger side J/B ECU - Airbag sensor assembly	AIRBAG (PH-2) - MPX2 (A24-22)
Passenger side J/B ECU - EGM	MPX- (P4-4) - MPX1 (E2-21)

CHECK:

Check continuity of the wire harness between the connectors.

Fig 1: Checking Continuity Of Wire Harness Between Connectors

OK:

There is a continuity between the connectors.

HINT:

If there is OPEN in any wire harness, please repair it.

NG : Repair or replace wire harness.
OK : Replace passenger side J/B ECU (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).