Back Door Courtesy Switch Circuit

DESCRIPTION

The multiplex network door ECU receives a back door open/closed signal from the back door lock.

WIRING DIAGRAM
PROCEDURE

1. READ VALUE USING TECHSTREAM (BACK DOOR COURTESY LIGHT SWITCH)

(a) Using the Techstream, read the Data List (See page ).

Back Door

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Back Door Courtesy Switch	Back door courtesy light switch signal / ON or OFF	ON: Back door open OFF: Back door closed	-

OK:

Tester display changes according to opening and closing of back door.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

1. INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY LIGHT SWITCH)

(a) Remove the back door lock (See page ).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
2 - 3	Open-latch	Below 1 Ω
	Full-latch	10 kΩ or higher

Text in Illustration

	Full-latch
	Open-latch

NG

REPLACE BACK DOOR LOCK ASSEMBLY

OK

1. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MULTIPLEX NETWORK DOOR ECU)

(a) Disconnect the W8 back door lock connector.

(b) Disconnect the W10 multiplex network door ECU connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
W8-2 (S) - W10-10 (BDCY)	Always	Below 1 Ω
W8-2 (S) - Body ground	Always	10 kΩ or higher
W8-3 (E) - W10-18 (CTYE)	Always	Below 1 Ω
W8-3 (E) - Body ground	Always	10 kΩ or higher

OK

REPLACE MULTIPLEX NETWORK DOOR ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR