Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MULTI-DISPLAY CONTROLLER

Disconnect the R32 controller connector.

Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.

Fig 1: Identifying R32 Controller Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Signal waveform

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
R32-20 (L4-) - Body ground	Audio sound is being produced	A waveform synchronized with sound is output
R32-21 (L4+) - Body ground
R32-22 (R4-) - Body ground
R32-23 (R4+) - Body ground

NG: Go to Step 2

OK: REPLACE MULTI-DISPLAY CONTROLLER (See REMOVAL )

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - REAR SEAT CONSOLE BOX)

Disconnect the R32 controller connector.
Disconnect the R16 box connector.

Measure the resistance according to the value(s) in the table below

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
R32-23 (R4+) - R16-10 (R+)	Always	Below 1 Ω
R32-22 (R4-) - R16-11 (R-)
R32-21 (L4+) - R16-12 (L+)
R32-20 (L4-) - R16-13 (L-)
R32-24 (SLD4) - R16-9 (SLD)
R32-23 (R4+) - Body ground	Always	10 kΩ or higher
R32-22 (R4-) - Body ground
R32-21 (L4+) - Body ground
R32-20 (L4-) - Body ground

Fig 2: Identifying R16 And R32 Connector Terminals (Multi-Display Controller - Rear Seat Console Box)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT REAR SEAT CONSOLE BOX

Fig 3: Inspecting Rear Seat Console Box

Disconnect the box connector.

Measure the resistance according to the value(s) in the table below.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
B-1 (SLD) - E-9 (SLD)	Always	Below 1 Ω
B-2 (R+) - E-10 (R+)
B-3 (R-) - E-11 (R-)
B-4 (L+) - E-12 (L+)
B-5 (L-) - E-13 (L-)

NG: REPLACE REAR SEAT CONSOLE BOX (See REMOVAL )

OK: Go to next step

REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK
1. Replace the disc player with a normal one and check if the same problem occurs again (see REMOVAL )
  OK: Same problem does not occur.
NG: REPLACE MULTI-DISPLAY CONTROLLER (See REMOVAL )

OK: END (DISC PLAYER IS DEFECTIVE)