Luggage Compartment Door Courtesy Switch Circuit

DESCRIPTION

Note

As the door control battery is installed between the vehicle battery and main body ECU (instrument panel junction block assembly), first perform the inspections in On-Vehicle Inspection to confirm that there are no malfunctions in the power source circuit for the main body ECU (instrument panel junction block assembly) before performing this troubleshooting procedure.

The main body ECU receives a No. 1 luggage compartment light information signal from the back door courtesy light switch (for Wagon) or luggage compartment door courtesy light switch (for Sedan), and illuminates the No. 1 luggage compartment light.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

Tech Tips

Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

PROCEDURE

READ VALUE USING GTS (BACK DOOR COURTESY SWITCH)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Body / Main Body / Data List / Back Door Courtesy Switch.

Use the Data List to check if the back door courtesy light switch (for Wagon) or luggage compartment door courtesy light switch (for Sedan) is operating properly.

Main Body
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 courtesy light switch on OFF: Back door courtesy light switch off	for Wagon
Luggage Courtesy SW	Luggage compartment door courtesy light switch signal / ON or OFF	ON: Luggage compartment door courtesy light switch on OFF: Luggage compartment door courtesy light switch off	for Sedan

OK
Tester display changes according to opening and closing of back door (for Wagon) or luggage compartment door (for Sedan).

OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

NG

INSPECT DOOR COURTESY LIGHT SWITCH

Text in Illustration
*1	Component without harness connected (Luggage Compartment Door Lock Assembly [for Sedan])
*2	Component without harness connected (Back Door Lock Assembly [for Wagon])

for Sedan:

Remove the luggage compartment door lock (luggage compartment door courtesy light switch) Click here.
for Wagon:

Remove the back door lock (back door courtesy light switch) Click here.

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

Standard Resistance

for Sedan

Tester Connection	Condition	Specified Condition
2 (E) - 3 (D+)	Luggage compartment door closed	10 kΩ or higher
2 (E) - 3 (D+)	Luggage compartment door opened	Below 1 Ω

for Wagon

Tester Connection	Condition	Specified Condition
1 (ACT-) - 3 (D+)	Back door closed	10 kΩ or higher
1 (ACT-) - 3 (D+)	Back door opened	Below 1 Ω

Result
Result	Proceed to
OK	A
NG (for Sedan)	B
NG (for Wagon)	C

B

REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY Click here

C

REPLACE BACK DOOR LOCK ASSEMBLY Click here

A

CHECK HARNESS AND CONNECTOR (COURTESY LIGHT SWITCH - MAIN BODY ECU AND BODY GROUND)

Text in Illustration
*1	Front view of wire harness connector (to Luggage Compartment Door Lock Assembly [for Sedan])	*2	Front view of wire harness connector (to Back Door Lock Assembly [for Wagon])
*3	Front view of wire harness connector (to Main Body ECU)	-	-

for Sedan:

Disconnect the G33 luggage compartment door lock (luggage compartment door courtesy light switch) connector.
for Wagon:

Disconnect the M6 back door lock (back door courtesy light switch) connector.
Disconnect the DA main body ECU connector.