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 DTC OUTPUT

Check for DTCs (see DTC CHECK / CLEAR )

Result

RESULT REFERENCE

Result	Proceed to
No DTC is output	A
DTC U1114 is output	B
DTC U1127 is output	C

B: GO TO CAN COMMUNICATION SYSTEM (See DTC U1114 LOST COMMUNICATION WITH MAIN SWITCH MODULE )

C: GO TO LIN COMMUNICATION SYSTEM (See DTC U1127 LOST COMMUNICATION WITH CENTER CONSOLE SWITCH ECU )

A: Go to next Step

READ VALUE USING Intelligent tester OR TECHSTREAM (REAR SUNSHADE SWITCH)

Use the Data List to check if the rear sunshade switch is functioning properly

Intelligent tester

CENTER CONSOLE

NORMAL CONDITION CHART

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
R SHADE SW	Rear sunshade switch / ON or OFF	ON Rear sunshade switch is pressed OFF Rear sunshade switch is not pressed	-

Techstream

Center Console Switch

NORMAL CONDITION CHART

Tester Display	Measurement item/Range	Normal Condition	Diagnostic Note
Rear Shade Switch	Rear sunshade switch / ON or OFF	ON Rear sunshade switch is pressed OFF Rear sunshade switch is not pressed	-

OK: Rear sunshade raises or lowers.

NG: Go to step 3

OK: REPLACE NO. 1 CONSOLE SWITCH (See REMOVAL )

INSPECT NO. 2 CONSOLE SWITCH

Disconnect the No 2 console switch connector
Measure the resistance according to the value (s) in the table below

Standard resistance

RESISTANCE REFERENCE

Tester Connection	Switch Condition	Specified Condition
8-12	Rear sunshade switch is pushed	Below 200 Ω
8-12	Rear sunshade switch is not pushed	10 kΩ or higher

NG: REPLACE NO. 2 CONSOLE SWITCH (See REMOVAL )

Fig 1: Identifying No 2 Console Switch Connector Terminals

OK: REPLACE NO. 1 CONSOLE SWITCH (See REMOVAL )