Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 289

LIGHTING  –  LIGHTING SYSTEM

LI–53

LI

DESCRIPTION

The main body ECU detects the condition of each door courtesy switch.

WIRING DIAGRAM

Door Courtesy Switch Circuit

Door Courtesy Switch (Driver Side)

Door Courtesy Switch 
(Rear LH Upper)

Door Courtesy Switch (Rear LH Lower)

Door Courtesy Switch 
(Rear RH Upper)

Door Courtesy Switch (Rear RH Lower)

Door Courtesy Switch (Back Door)

Back Window Courtesy Switch

Door Courtesy Switch (Front Passenger Side)

DCTY

PCTY

RLCY

RRCY

BCTY

To Back Door ECU

Main Body ECU

B136092E01

LI–54

LIGHTING  –  LIGHTING SYSTEM

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INSPECTION PROCEDURE

(a) Connect the intelligent tester with CAN VIM to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the intelligent tester main switch on.
(d) Select the item below in the DATA LIST for proper 

functioning to check the courtesy switch.

BODY

OK:

Condition sign can be displayed.

Result

B

C

D

E

A

Inspection (See page 

LI-114

)

1

READ VALUE OF INTELLIGENT TESTER (DOOR COURTESY SWITCH)

Item

Measurement Item / Display

(Range)

Normal Condition

Diagnostic Note

D DOR CTY SW

Driver door courtesy switch 

signal/ON or OFF

ON :Driver door open
OFF: Driver door closed

-

P DOR CTY SW

Front passenger door courtesy 

switch signal/ON or OFF

ON: Front passenger door 
open
OFF: Front passenger door 
closed

-

Rr DOR CTY SW

Rear door courtesy switch 

signal/ON or OFF

ON: Either right or left rear 
door open
OFF: Both right and left rear 
doors closed

-

LUGG COURTSY SW

Back door and back window 

courtesy switch signal/ON or 

OFF

ON: Either back door or back 
window open
OFF: Both back door and back 
window closed

-

Result

Proceed to

OK

A

Driver side door courtesy switch does not operate

B

Front passenger side door courtesy switch does not operate

C

Both rear door courtesy switches do not operate

D

Back door courtesy switch or back window courtesy switch does not operate

E

              Go to step 2

              Go to step 4

              Go to step 6

              Go to step 8

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2

INSPECT DOOR COURTESY SWITCH (DRIVER SIDE)

LIGHTING  –  LIGHTING SYSTEM

LI–55

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OK:

Door courtesy switch is normal.

NG

OK

(a) Disconnect the E7 main body ECU connector.
(b) Disconnect the J1 door courtesy switch connector.
(c) Measure the resistance

Standard resistance

(d) Reconnect the main body ECU connector.
(e) Reconnect the door courtesy switch connector.

NG

OK

Inspection (See page 

LI-114

)

OK:

Door courtesy switch is normal.

NG

OK

REPLACE DOOR COURTESY SWITCH 
(DRIVER SIDE)

3

CHECK HARNESS AND CONNECTOR (DOOR COURTESY SWITCH (DRIVER SIDE) - MAIN 
BODY ECU)

22

21

17

10

7

24

13 14

16

18

8

19

9

11 12

15

23

20

1

2

3

4

5

6

1

Wire Harness Side:

DCTY

Main Body ECU Connector

Front View

Front View

Door Courtesy Switch (Driver Side) 
Connector

E7

J1

B138179E01

Tester Connection

Condition

Specified Condition

E7-23 (DCTY) - J1-1

Always

Below 1 

Ω

E7-23 (DCTY) or J1-1 - 

Body ground

Always

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

REPLACE MAIN BODY ECU

4

INSPECT DOOR COURTESY SWITCH (FRONT PASSENGER SIDE)

REPLACE DOOR COURTESY SWITCH 
(FRONT PASSENGER SIDE)

LI–56

LIGHTING  –  LIGHTING SYSTEM

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(a) Disconnect the E7 main body ECU connector.
(b) Disconnect the I1door courtesy switch connector.
(c) Measure the resistance.

Standard resistance

(d) Reconnect the main body ECU connector.
(e) Reconnect the door courtesy switch connector.

NG

OK

(a) Inspect the rear door lock upper assembly (See page 

LI-

117

)

(b) Inspect the rear door lock lower assembly (See page

LI-

120

)

OK:

Door courtesy switch is normal.

NG

OK

5

CHECK HARNESS AND CONNECTOR (DOOR COURTESY SWITCH(FRONT PASSENGER 
SIDE) - MAIN BODY ECU)

22

21

17

10

7

24

13 14

16

18

8

19

9

11 12

15

23

20

1

2

3

4

5

6

1

Wire Harness Side:

PCTY

Front View

Front View

Door Courtesy Switch (Front Passenger 
Side) Connector

E7

I1

Main Body ECU Connector

B138179E03

Tester Connection

Condition

Specified Condition

E7-24 (PCTY) - I1-1

Always

Below 1 

Ω

E7-24 (PCTY) or I1-1 - 

Body ground

Always

10 k

Ω or higher

REPAIR OR REPLACE HARNESS OR 
CONNECTOR

REPLACE MAIN BODY ECU

6

INSPECT REAR DOOR COURTESY SWITCH (REAR LH UPPER, REAR LH LOWER, REAR 
RH UPPER, REAR RH LOWER)

REPLACE REAR DOOR COURTESY SWITCH 
(REAR DOOR LOCK ASSEMBLY)