Toyota Corolla Cross: Inspection

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Interior / Door Lock / Back Door Lock / Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK DOOR LOCK WITH COURTESY LIGHT SWITCH (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.

(2) Apply auxiliary battery voltage to the back door lock with courtesy light switch assembly and check the operation of the door lock motor.

OK:

Measurement Condition

Specified Condition

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

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

Unlock

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

Unlock

Lock

Component without harness connected

(Back Door Lock with Courtesy Light Switch Assembly)

(b) Check the operation of the 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 (w/ Power Back Door)

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

(1) Apply auxiliary battery voltage to the back door lock with courtesy light switch assembly and check the operation of the door lock motor.

OK:

Measurement Condition

Specified Condition

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

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

Latch turns to full-latch position (clockwise rotation)

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

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

Latch turns to open-latch position (counterclockwise rotation)

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

Clockwise

Counterclockwise

Component without harness connected

(Back Door Lock with Courtesy Light Switch Assembly)

(b) Check the operation of the 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-latch	Below 1 Ω
	Open-latch → Half-latch	Below 1 Ω → 10 kΩ or higher
	Half-latch	10 kΩ or higher
	Full-latch	10 kΩ or higher
	Over-latch	10 kΩ or higher → Below 1 Ω → 10 kΩ or higher

Standard Resistance

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

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

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

(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-latch	10 kΩ or higher
	Open-latch → Half-latch	10 kΩ or higher → Below 1 Ω → 10 kΩ or higher
	Half-latch	10 kΩ or higher
	Half-latch → Full-latch	10 kΩ or higher → Below 1 Ω → 10 kΩ or higher
	Full-latch	10 kΩ or higher

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

(d) 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
U17-4 (CTY) - U17-1 (E)	Open-latch	Below 1 Ω
	Half-latch	Below 1 Ω
	Half-latch → Full-latch	Below 1 Ω → 10 kΩ or higher
	Full-latch	10 kΩ or higher
	Over-latch	10 kΩ or higher

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

(e) Check the operation of the selector 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)	Selector Switch ON	Below 1 Ω
U17-6 (OPN) - U17-1 (E)	Selector Switch OFF	10 kΩ or higher

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

Selector Switch

Selector Gear

Component without harness connected

(Back Door Lock with Courtesy Light Switch Assembly)

SEE MORE:

Installation

INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 SIDE NO. 1 AIRBAG SENSOR 89831 - - 2 CENTER PILLAR LOWER GARNISH 62413A - - - 3 FRONT SEAT OUTER BELT ASSEMBLY

System Voltage Circuit Short to Ground or Open (P056014)

MONITOR DESCRIPTION The auxiliary battery supplies electricity to the ECM even when the ignition switch is off. This power allows the ECM to store data such as DTC history, Freeze Frame Data and fuel trim values. If the auxiliary battery voltage falls below a minimum level, the memory is cleared and

Toyota Corolla Cross: Inspection

READ NEXT:

Installation

Door Control Receiver

Removal

SEE MORE:

Installation

System Voltage Circuit Short to Ground or Open (P056014)