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 luggage room J/B ECU.
CHECK:

Check that the operation of luggage compartment door closer system is normal.

HINT:

With this inspection, whether or not the luggage room J/B ECU functions normally can be diagnosed.
1. NG : Replace luggage room J/B ECU (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
2. OK : Go to next step.

Check wire harness.

PREPARATION:

Pull out the ECU connectors mentioned below.

DTC DETECTION ITEM

Wire harness side connector of ECU	Terminal
Luggage room J/B EGU - Combination switch.	MPX+ (L14-2) - MPX2 (C,14-10)
Luggage room J/B ECU - Gateway ECU	MPX- (L14-13) - MPL1 (G3-6)

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 luggage room J/B ECU (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).