Home › Suspension › Suspension Control System › SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION
Last Modified: 11-27-2007 1.6 C
Service Category: Suspension Section: Suspension Control System
Model Year: 2008 Model: LX570 Doc ID: RM000003FQJ000X
Title: SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: DESCRIPTION (2008 LX570)

DTC

C1795

Access Mode Switch Circuit (Test Mode DTC)

DESCRIPTION

According to the signal from the easy access mode switch, the suspension control ECU turns easy access mode control on/off.

DTC Code

Detection Condition

Trouble Area

C1795

The test mode procedure is performed.
  • Harness or connector
  • Combination switch (Easy access mode switch)
  • Suspension control ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

PROCEDURE

1.

READ VALUE USING TECHSTREAM (ACCESS MODE SWITCH)

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG) and the Techstream on.

(d) Enter the following menus: Chassis / AHC / Data List.

(e) According to the display on the Techstream, read the Data List.

AHC

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Access Mode Switch

Easy access mode switch /

ON or OFF

ON: Easy access mode switch pushed and held

OFF: Easy access mode switch not pushed

-

OK:

On the Techstream screen, item changes between ON and OFF according to switch operation.

OK

2.

TEST MODE INSPECTION

(a) Refer to the Test Mode Procedure and perform the signal check. Check that test mode DTC C1795 is cleared SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: TEST MODE PROCEDURE (2008 LX570) .

Result

Result

Proceed to

DTC C1795 is not cleared

A

DTC C1795 is cleared

B
A

3.

INSPECT COMBINATION SWITCH (EASY ACCESS MODE SWITCH)

(a) Remove the combination switch SUSPENSION CONTROL: ACCESS MODE SWITCH: REMOVAL (2008 LX570) .

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

3 (ECU1) - 6 (GND)

Pushed and held

Below 1 Ω

Not pushed

10 kΩ or higher
OK

4.

CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - SWITCH)

(a) Disconnect the K30 ECU connector.

(b) Disconnect the E87 switch connector.

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



Standard Resistance:

Tester Connection

Condition

Specified Condition

K30-10 (LMSW) - E87-3 (ECU1)

Always

Below 1 Ω

K30-10 (LMSW) - Body ground

Always

10 kΩ or higher

E87-6 (GND) - Body ground

Always

Below 1 Ω
OK