Toyota Corolla Cross: Inspection

Toyota Corolla Cross (2022-2026) Service Manual / Vehicle Interior / Lighting (int) / Back Door Courtesy Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY (w/o Power Back Door)

(a) Check the operation of the door lock motor.

(1) Move the back door lock with courtesy light switch assembly to the lock position.

*a	Unlock
*b	Lock
*c	Component without harness connected (Back Door Lock with Courtesy Light Switch Assembly)
*d	Latch

(2) Apply auxiliary battery voltage to the door lock motor assembly and check the operation of the door lock motor.

OK:

Tester Connection	Condition	Specified Condition
U4-1 (ACT+) - U4-2 (ACT-)	U4-1 (ACT+) → Auxiliary battery positive (+) U4-2 (ACT-) → Auxiliary battery negative (-)	Unlock

Tester Connection

Condition

Specified Condition

U4-1 (ACT+) - U4-2 (ACT-)

U4-1 (ACT+) → Auxiliary battery positive (+)

U4-2 (ACT-) → Auxiliary battery negative (-)

Unlock

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

(b) Check the operation of the back door courtesy switch.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
U4-2 (ACT-) - U4-3 (D+)	Lock	10 kΩ or higher
U4-2 (ACT-) - U4-3 (D+)	Unlock	Below 1 Ω

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

2. INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH ASSEMBLY (w/ Power Back Door)

(a) Check the operation of the closer motor.

(1) Apply auxiliary battery voltage and check the operation of the closer motor.

OK:

Tester Connection

Condition

Specified Condition

U18-1 (M-) - U18-2 (M+)

U18-1 (M-) → Auxiliary battery positive (+)

U18-2 (M+) → Auxiliary battery negative (-)

Open Operation

U18-1 (M-) - U18-2 (M+)

U18-2 (M+) → Auxiliary battery positive (+)

U18-1 (M-) → Auxiliary battery negative (-)

Close Operation

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

Component without harness connected

(Back Door Lock with Courtesy Light Switch Assembly)

Close Operation Direction

Open Operation Direction

(b) Check the resistance of the half latch switch.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
U17-3 (CLS) - U17-1 (E)	Open position	Below 1 Ω
U17-3 (CLS) - U17-1 (E)	Open position → Half-latch position	Below 1 Ω → 10 kΩ or higher
U17-3 (CLS) - U17-1 (E)	Half-latch position	10 kΩ or higher
U17-3 (CLS) - U17-1 (E)	Full-latch position	10 kΩ or higher
U17-3 (CLS) - U17-1 (E)	Overstroke position	10 kΩ or higher

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

*a	Component without harness connected (Back Door Lock with Courtesy Light Switch Assembly)
*b	Open Position
*c	Half-latch Position
*d	Full-latch Position
*e	Overstroke Position

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
U17-1 (E) - U17-4 (CTY)	Open position	Below 1 Ω
U17-1 (E) - U17-4 (CTY)	Half-latch position	Below 1 Ω
U17-1 (E) - U17-4 (CTY)	Half-latch position → Full-latch position	Below 1 Ω → 10 kΩ or higher
U17-1 (E) - U17-4 (CTY)	Full-latch position	10 kΩ or higher
U17-1 (E) - U17-4 (CTY)	Overstroke position	10 kΩ or higher

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

*a	Component without harness connected (Back Door Lock with Courtesy Light Switch Assembly)
*b	Open Position
*c	Half-latch Position
*d	Full-latch Position
*e	Overstroke Position

(d) Check the resistance of the pawl switch.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
U17-2 (FSW) - U17-1 (E)	Open position	10 kΩ or higher
U17-2 (FSW) - U17-1 (E)	Open position → Half-latch position	10 kΩ or higher → Below 1 Ω → 10 kΩ or higher
U17-2 (FSW) - U17-1 (E)	Half-latch position	10 kΩ or higher
U17-2 (FSW) - U17-1 (E)	Half-latch position → Full-latch position	10 kΩ or higher → Below 1 Ω → 10 kΩ or higher
U17-2 (FSW) - U17-1 (E)	Full-latch position	10 kΩ or higher
U17-2 (FSW) - U17-1 (E)	Overstroke position	10 kΩ or higher

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

*a	Component without harness connected (Back Door Lock with Courtesy Light Switch Assembly)
*b	Open Position
*c	Half-latch Position
*d	Full-latch Position
*e	Overstroke Position

(e) Check the resistance of the sector switch.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

U17-6 (OPN) - U17-1 (E)

Sector gear in neutral position

(Sector switch on)

Below 1 Ω

U17-6 (OPN) - U17-1 (E)

Sector gear not in neutral position

(Sector switch off)

10 kΩ or higher

If the result is not as specified, replace the back door lock with courtesy light switch assembly.

Component without harness connected

(Back Door Lock with Courtesy Light Switch Assembly)

Sector Gear in Neutral Position

SEE MORE:

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The following may indicate that your vehicle is overheating. The engine coolant temperature gauge is in the red zone or a loss of engine power is experienced. (For example, the vehicle speed does not increase.) "Engine Coolant Temp High Stop in a Safe Place See Owner's Manual" is shown on

Toyota Corolla Cross: Inspection

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