Inspection Procedure

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR LH

Disconnect the connector from headlight beam level control motor LH.

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

Standard:

Fig 1: Inspecting Headlight Beam Level Control Motor LH Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TESTER SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
1 (LH2) - 5 (LHB1)	Always	26 to 30 Ω.
3 (LH4) - 5 (LHB1)	Always	26 to 30 Ω
4 (LH1) - 5 (LHB1)	Always	26 to 30 Ω
6 (LH3) - 5 (LHB1)	Always	26 to 30 Ω

NG: REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR LH (See REPLACEMENT )
OK: Go to next step.

CHECK HARNESS AND CONNECTOR (HEADLIGHT BEAM LEVEL CONTROL MOTOR LH - HEADLIGHT BEAM LEVEL)

Disconnect the H3 connector of headlight beam level control motor LH and the H17 connector of the headlight beam level control ECU.

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

Fig 2: Disconnecting H3 Connector Of Headlight Beam Level Control Motor LH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

TESTER SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
H3-1 (LH2) - H17-26 (LH2)	Always	Below 1 Ω
H3-3 (LH4) - H17-25 (LH4)	Always	Below 1 Ω
H3-4 (LH1) - H17-24 (LH1)	Always	Below 1 Ω
H3-5 (LHB1) - H17-22 (LHG)	Always	Below 1 Ω
H3-6 (LH3) - H17-23 (LH3)	Always	Below 1 Ω
H17-26 (LH2) - Body ground	Always	10 kΩ or higher
H17-25 (LH4) - Body ground	Always	10 kΩ or higher
H17-24 (LH1) - Body ground	Always	10 kΩ or higher
H17-22 (LHG) - Body ground	Always	10 kΩ or higher
H17-23 (LH3) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step.

INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR RH

Disconnect the connector from headlamp leveling motor RH.

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

Fig 3: Inspecting Headlight Beam Level Control Motor RH

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

TESTER SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
1 (RH2) -5 (RHB1)	Always	26 to 30 Ω
3 (RH4) -5 (RHB1)	Always	26 to 30 Ω
4 (RH1)-5 (RHB1)	Always	26 to 30 Ω
6 (RH3)-5 (RHB1)	Always	26 to 30 Ω

NG: REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR RH (See REPLACEMENT )
OK: Go to next step.

CHECK HARNESS AND CONNECTOR (HEADLIGHT BEAM LEVEL CONTROL MOTOR RH - HEADLIGHT BEAM LEVEL)

Disconnect the H7 connector of headlight beam level control motor RH and the H17 connector of the headlight beam level control ECU.

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

Fig 4: Disconnecting H7 Connector Of Headlight Beam Level Control Motor RH

Standard:

TESTER SPECIFIED CONDITION CHART

Tester connection	Condition	Specified condition
H7-1 (RH2) - H17-13 (RH2)	Always	Below 1 Ω
H7-3 (RH4) - H17-12 (RH4)	Always	Below 1 Ω
H7-4 (RH1) - H17-11 (RH1)	Always	Below 1 Ω
H7-5 (RHB1) - H17-9 (RHG)	Always	Below 1 Ω
H7-6 (RH3) - H17-10 (RH3)	Always	Below 1 Ω
H17-13 (RH2) - Body ground	Always	10 kΩ or higher
H17-12 (RH4) - Body ground	Always	10 kΩ or higher
H17-11 (RH1)- Body ground	Always	10 kΩ or higher
H17-9 (RHG) - Body ground	Always	10 kΩ or higher
H17-10 (RH3) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE