B2417 Malfunction of headlight beam level control motor LH Open or short of headlight beam level control motor LH...

DESCRIPTION

The leveling actuator receives the signal from the AFS ECU to operate. The AFS ECU receives the signal regarding the operating conditions of the leveling actuator.

DTC No.	DTC Detecting Condition	Trouble Area
B2417	Malfunction of headlight beam level control motor LH Open or short of headlight beam level control motor LH circuit	Headlight beam level control motor LH Harness or connector AFS ECU
B2418	Malfunction of headlight beam level control motor RH Open or short of headlight beam level control motor RH circuit	Headlight beam level control motor RH Harness or connector AFS ECU

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (HEADLIGHT BEAM LEVEL CONTROL MOTOR - AFS ECU)

1. Disconnect the headlight connector of headlight beam level control motor side and AFS ECU connector.

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

   Resistance:

   LH Side (B2417):

   Tester connection	Condition	Specified condition
   LL2+ (H3-1) - LL2+ (A18-31)	Always	Below 1 Ω
   LL2- (H3-2) - LL2- (A18-32)	Always	Below 1 Ω
   LL1+ (H3-3) - LL1+ (A18-29)	Always	Below 1 Ω
   LL1- (H3-4) - LL1- (A18-30)	Always	Below 1 Ω
   LL1+ (A18-29) - Body ground	Always	10 kΩ or higher
   LL1- (A18-30) - Body ground	Always	10 kΩ or higher
   LL2+ (A18-31) - Body ground	Always	10 kΩ or higher
   LL2- (A18-32) - Body ground	Always	10 kΩ or higher

   LH Side (B2418):

   Tester connection	Condition	Specified condition
   LR2+ (H4-1) - LR2+ (A18-15)	Always	Below 1 Ω
   LR2- (H4-2) - LR2- (A18-16)	Always	Below 1 Ω
   LR1+ (H4-3) - LR1+ (A18-13)	Always	Below 1 Ω
   LR1- (H4-4) - LR1- (A18-14)	Always	Below 1 Ω
   LR1+ (A18-13) - Body ground	Always	10 kΩ or higher
   LR1- (A18-14) - Body ground	Always	10 kΩ or higher
   LR2+ (A18-15) - Body ground	Always	10 kΩ or higher
   LR2- (A18-16) - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

2. INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR

1. Disconnect the headlight connector of headlight beam level control motor side.

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

   Resistance:

   LH Side (B2417):

   Tester connection	Condition	Specified condition
   LL2+ (1) - LL2- (2)	Always	5.8 to 12.5 Ω
   LL1+ (3) - LL1- (4)	Always	5.8 to 12.5 Ω

   RH Side (B2418):

   Tester connection	Condition	Specified condition
   LR2+ (1) - LR2- (2)	Always	5.8 to 12.5 Ω
   LR1+ (3) - LR1- (4)	Always	5.8 to 12.5 Ω

   Result:

   Condition	Proceed to
   OK (When checking from the DTC)	A
   OK (When checking from the PROBLEM SYMPTOMS TABLE)	B
   NG	C

B	PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
C	REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR

A
REPLACE AFS ECU