Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADLIGHT ASSEMBLY LH (w/o Cornering Light)

(a) Apply auxiliary battery voltage to the headlight assembly LH and check that the lights illuminate.

OK:

Measurement Condition	Specified Condition
Auxiliary battery positive (+) → Terminal 4 (LO) Auxiliary battery negative (-) → Terminal 7 (E)	Lo beam headlight illuminates
Auxiliary battery positive (+) → Terminal 3 (HI) Auxiliary battery negative (-) → Terminal 7 (E)	Hi beam headlight illuminates
Auxiliary battery positive (+) → Terminal 1 (B) Auxiliary battery positive (+) → Terminal 4 (LO) Auxiliary battery negative (-) → Terminal 7 (E)	Daytime running light illuminates
Auxiliary battery positive (+) → Terminal 5 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Parking light light illuminates
Auxiliary battery positive (+) → Terminal 2 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Turn signal light illuminates
Auxiliary battery positive (+) → Terminal 6 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Side marker light illuminates

If the result is not as specified, replace the headlight assembly LH.

*a	Component without harness connected (Headlight Assembly LH)

2. INSPECT HEADLIGHT ASSEMBLY RH (w/o Cornering Light)

(a) Apply auxiliary battery voltage to the headlight assembly RH and check that the lights illuminate.

OK:

Measurement Condition	Specified Condition
Auxiliary battery positive (+) → Terminal 4 (LO) Auxiliary battery negative (-) → Terminal 7 (E)	Lo beam headlight illuminates
Auxiliary battery positive (+) → Terminal 3 (HI) Auxiliary battery negative (-) → Terminal 7 (E)	Hi beam headlight illuminates
Auxiliary battery positive (+) → Terminal 1 (B) Auxiliary battery positive (+) → Terminal 4(LO) Auxiliary battery negative (-) → Terminal 7 (E)	Daytime running light illuminates
Auxiliary battery positive (+) → Terminal 5 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Parking light light illuminates
Auxiliary battery positive (+) → Terminal 2 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Turn signal light illuminates
Auxiliary battery positive (+) → Terminal 6 (B) Auxiliary battery negative (-) → Terminal 7 (E)	Side marker light illuminates

If the result is not as specified, replace the headlight assembly RH.

*a	Component without harness connected (Headlight Assembly RH)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Front Power Seat Control System(for Hv Model With Memory): Short in Sensor with Motor Power Supply Circuit (B2658)
DESCRIPTION This DTC is stored when a power seat motor operates (a position control sensor is being supplied with power) and the power supply voltage does not rise to the specified value. DTC No. Detection Item DTC Detection Condition Trouble Area B2658 Short in Sensor with Motor Power Supply Circui ...

Toyota Avalon (XX50) 2019-2022 Owners Manual