Home Vehicle Exterior Door/Hatch TAIL GATE CLOSER SYSTEM
Last Modified: 11-27-2007 1.6 C
Service Category: Vehicle Exterior Section: Door/Hatch
Model Year: 2008 Model: LX570 Doc ID: RM000003EUL000X
Title: DOOR / HATCH: TAIL GATE CLOSER SYSTEM: DESCRIPTION (2008 LX570)

DTC

B225C

Tail Gate Panel Position Switch LH

DESCRIPTION

The No. 2 main body ECU receives the close position switch signal from the lower tail gate lock LH and detects the open/closed status of the lower tail gate. DTC B225C is stored when the ECU receives a close position switch malfunction signal from the lower tail gate lock LH.

DTC Code

DTC Detection Condition

Trouble Area

B225C

A close position switch malfunction (open or short circuit) signal from the lower tail gate lock LH is received.

  • Lower tail gate lock LH
  • Harness or connector
  • No. 2 main body ECU

WIRING DIAGRAM



INSPECTION PROCEDURE

PROCEDURE

1.

READ VALUE USING TECHSTREAM (CLOSE POSITION SWITCH)

(a) Check the Data List for proper functioning of the close position switch.

Body No. 4

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Position Switch LH

Close position switch LH signal/ON or OFF

ON: Lower tail gate closed

OFF: Lower tail gate open

-

OK:

The display is as specified in the normal condition.

OK

2.

CHECK DTC OUTPUT

(a) Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

(b) Check for DTCs DOOR / HATCH: TAIL GATE CLOSER SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(c) Clear the DTCs DOOR / HATCH: TAIL GATE CLOSER SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(d) Starting with the lower tail gate closed, open and close the lower tail gate 6 times.

(e) Recheck for DTCs DOOR / HATCH: TAIL GATE CLOSER SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC B225C is not output.

OK

3.

INSPECT LOWER TAIL GATE LOCK ASSEMBLY LH



(a) Remove the lower tail gate lock LH DOOR / HATCH: TAIL GATE: DISASSEMBLY (2008 LX570)+ .

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

7 (HND) - 8 (GND)

Over-latch

Below 1 Ω

7 (HND) - 8 (GND)

Full-latch

10 kΩ or higher

7 (HND) - 8 (GND)

Half-latch

10 kΩ or higher

7 (HND) - 8 (GND)

Open-latch

10 kΩ or higher

OK

4.

CHECK HARNESS AND CONNECTOR (LOCK - ECU AND BODY GROUND)



(a) Disconnect the f3 lock connector.

(b) Disconnect the L34 ECU connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

f3-7 (HND) - L34-10 (LMT)

Always

Below 1 Ω

f3-8 (GND) - Body ground

Always

Below 1 Ω

f3-7 (HND) - Body ground

Always

10 kΩ or higher

OK