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Last Modified: 11-27-2007 1.6 C
Service Category: Vehicle Exterior Section: Lighting (ext)
Model Year: 2008 Model: LX570 Doc ID: RM000002R6W007X
Title: LIGHTING (EXT): LIGHTING SYSTEM: DESCRIPTION (2008 LX570)

DTC

B2410

Headlight Swivel Motor LH Communication Malfunction

DTC

B2411

Headlight Swivel Motor RH Communication Malfunction

DESCRIPTION

These DTCs are stored when the AFS ECU detects errors in its own communications with the headlight (headlight swivel motor).

DTC Code

DTC Detection Condition

Trouble Area

B2410

The AFS ECU detects errors in its own communications with the headlight swivel motor LH.
  • AFS ECU
  • Headlight swivel motor LH
  • Headlight LH
  • Harness or connector

B2411

The AFS ECU detects errors in its own communications with the headlight swivel motor RH.
  • AFS ECU
  • Headlight swivel motor RH
  • Headlight RH
  • Harness or connector

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

Perform a visual check of the headlight (swivel motor) before replacing it.

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs LIGHTING (EXT): LIGHTING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(b) Check for DTCs LIGHTING (EXT): LIGHTING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC B2410 or B2411 output does not occur.

OK

2.

CHECK HARNESS AND CONNECTOR (AFS ECU - BATTERY AND BODY GROUND)


(a) Disconnect the E91 ECU connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

E91-14 (IGS) - Body ground

Engine switch on (IG)

11 to 14 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E91-22 (E1) - Body ground

Always

Below 1 Ω
OK

3.

CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT)


(a) Disconnect the E91 ECU connector.

(b) Disconnect the A40 and A46 light connectors.

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

Standard Resistance:

for LH

for RH

Tester Connection

Condition

Specified Condition

E91-29 (SML) - A40-1 (SML)

Always

Below 1 Ω

E91-29 (SML) - Body ground

Always

10 kΩ or higher

Tester Connection

Condition

Specified Condition

E91-10 (SMR) - A46-1 (SMR)

Always

Below 1 Ω

E91-10 (SMR) - Body ground

Always

10 kΩ or higher
OK

4.

CHECK HEADLIGHT SWIVEL MOTOR (OPERATION)

(a) Temporarily replace the headlight with a new or normally functioning one.

(b) Check for DTCs LIGHTING (EXT): LIGHTING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

OK:

DTC B2410 or B2411 output does not occur.

OK