Toyota Tacoma (2015-2018) Service Manual: Theft Deterrent System cannot be Set or Unset

DESCRIPTION

When the ignition switch is turned off and all doors and the engine hood are closed, the theft deterrent system is set when doors are locked by wireless operation*1, key linked operation or entry operation*2. If all doors are closed but engine hood is open when doors are locked by wireless operation*1, key linked operation or the entry operation*2, the theft deterrent system will be set when engine hood is closed. Also, when the ignition switch is turned ON and the engine is run continuously for 2 seconds or more, or when the doors are unlocked by wireless operation*1, key linked operation or entry operation*2, the theft deterrent system is unset.

WIRING DIAGRAM

Refer to "System Diagram" (See page ).

CAUTION / NOTICE / HINT

PROCEDURE

1.	CHECK POWER DOOR LOCK OPERATION

(a) Check the power door lock control operation (See page ).

Result

Result	Proceed to
OK (w/ Wireless Door Lock System)	A
OK (w/o Wireless Door Lock System)	B
NG	C

B

GO TO STEP 8

C

GO TO POWER DOOR LOCK CONTROL SYSTEM

A

2.	CHECK WIRELESS DOOR LOCK OPERATION

(a) Check the wireless door lock control operation using the door control transmitter module set sub-assembly *1 or electrical key transmitter sub-assembly*2.

Result

Result	Proceed to
OK (w/ Smart Key System)	A
OK (w/o Smart Key System)	B
NG (w/ Smart Key System)	C
NG (w/o Smart Key System)	D

B

GO TO STEP 8

C

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key System)

D

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System)

A

3.	PERFORM ACTIVE TEST USING TECHSTREAM (IMMOBILISER INDICATOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Smart Key

Tester Display	Test part	Control Range	Diagnostic Note
Immobiliser Indicator	Security indicator	OFF/ON	-

OK:

The security indicator light operates normally.

NG

GO TO IMMOBILISER SYSTEM (w/ Smart Key System)

OK

4.	READ VALUE USING TECHSTREAM (ACC SW AND IG SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
ACC SW	Ignition switch / ON or OFF	ON: Ignition switch ACC OFF: Ignition switch off	-
IG SW	Ignition switch / ON or OFF	ON: Ignition switch ON OFF: Ignition switch off or ACC	-

OK:

ON or OFF appears on the screen according to whether the ignition switch is in ON or is in off or ACC.

NG

GO TO LIGHTING SYSTEM

OK

5.	READ VALUE USING TECHSTREAM (FR DOOR LOCK POS, FL DOOR LOCK POS, RR-DOOR LOCK POS SW AND RL-DOOR LOCK POS SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
FR Door Lock Pos	Front door RH unlock detection switch / LOCK or UNLOCK	LOCK: Front door RH locked UNLOCK: Front door RH unlocked	-
FL Door Lock Pos	Front door LH unlock detection switch / LOCK or UNLOCK	LOCK: Front door LH locked UNLOCK: Front door LH unlocked	-
RR-Door Lock Pos SW*1	Rear door RH unlock detection switch / ON or OFF	ON: Rear door RH unlocked OFF: Rear door RH locked	-
RL-Door Lock Pos SW*1	Rear door LH unlock detection switch / ON or OFF	ON: Rear door LH unlocked OFF: Rear door LH locked	-

OK:

The Techstream display changes correctly in response to the lock/unlock operation.

NG

GO TO LIGHTING SYSTEM

OK

6.	READ VALUE USING TECHSTREAM (RR DOOR COURTESY SW, RL DOOR COURTESY SW, FR DOOR COURTESY SW AND FL DOOR COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
RR Door Courtesy SW	Rear door courtesy light switch assembly RH signal / ON or OFF	OFF: Rear door RH closed ON: Rear door RH open	-
RL Door Courtesy SW	Rear door courtesy light switch assembly LH signal / ON or OFF	OFF: Rear door LH closed ON: Rear door LH open	-
FR Door Courtesy SW	Front door courtesy light switch assembly RH signal / ON or OFF	OFF: Front door RH closed ON: Front door RH open	-
FL Door Courtesy SW	Front door courtesy light switch assembly LH signal / ON or OFF	OFF: Front door LH closed ON: Front door LH open	-

OK:

Normal conditions listed above are displayed.

NG

GO TO LIGHTING SYSTEM

OK

7.	READ VALUE USING TECHSTREAM (HOOD COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
Hood Courtesy SW	Hood courtesy switch / ON or OFF	ON: Hood open OFF: Hood closed	-

OK:

The Techstream display changes correctly in response to the hood courtesy switch (hood lock assembly) status.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

GO TO STEP 13

8.	PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Main Body

Tester Display	Test part	Control Range	Diagnostic Note
Security Indicator	Security indicator	OFF/ON	-

OK:

The security indicator light operates normally.

NG

GO TO IMMOBILISER SYSTEM (w/o Smart Key System)

OK

9.	READ VALUE USING TECHSTREAM (ACC SW AND IG SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
ACC SW	Ignition switch / ON or OFF	ON: Ignition switch ACC OFF: Ignition switch off	-
IG SW	Ignition switch / ON or OFF	ON: Ignition switch ON OFF: Ignition switch off or ACC	-

OK:

ON or OFF appears on the screen according to whether the ignition switch is in ON or is in off or ACC.

NG

GO TO LIGHTING SYSTEM

OK

10.	READ VALUE USING TECHSTREAM (FR DOOR LOCK POS, FL DOOR LOCK POS, RR-DOOR LOCK POS SW AND RL-DOOR LOCK POS SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
FR Door Lock Pos	Front door RH unlock detection switch / LOCK or UNLOCK	LOCK: Front door RH locked UNLOCK: Front door RH unlocked	-
FL Door Lock Pos	Front door LH unlock detection switch / LOCK or UNLOCK	LOCK: Front door LH locked UNLOCK: Front door LH unlocked	-
RR-Door Lock Pos SW*1	Rear door RH unlock detection switch / ON or OFF	ON: Rear door RH unlocked OFF: Rear door RH locked	-
RL-Door Lock Pos SW*1	Rear door LH unlock detection switch / ON or OFF	ON: Rear door LH unlocked OFF: Rear door LH locked	-

OK:

The Techstream display changes correctly in response to the lock/unlock operation.

NG

GO TO LIGHTING SYSTEM

OK

11.	READ VALUE USING TECHSTREAM (RR DOOR COURTESY SW, RL DOOR COURTESY SW, FR DOOR COURTESY SW AND FL DOOR COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
RR Door Courtesy SW	Rear door courtesy light switch assembly RH signal / ON or OFF	OFF: Rear door RH closed ON: Rear door RH open	-
RL Door Courtesy SW	Rear door courtesy light switch assembly LH signal / ON or OFF	OFF: Rear door LH closed ON: Rear door LH open	-
FR Door Courtesy SW	Front door courtesy light switch assembly RH signal / ON or OFF	OFF: Front door RH closed ON: Front door RH open	-
FL Door Courtesy SW	Front door courtesy light switch assembly LH signal / ON or OFF	OFF: Front door LH closed ON: Front door LH open	-

OK:

Normal conditions listed above are displayed.

NG

GO TO LIGHTING SYSTEM

OK

12.	READ VALUE USING TECHSTREAM (HOOD COURTESY SW)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Main Body

Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
Hood Courtesy SW	Hood courtesy switch / ON or OFF	ON: Hood open OFF: Hood closed	-

OK:

The Techstream display changes correctly in response to the hood courtesy switch (hood lock assembly) status.

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

13.	INSPECT HOOD LOCK ASSEMBLY

(a) Remove the hood lock assembly (See page ).

(b) Inspect the hood lock assembly (See page ).

NG

REPLACE HOOD LOCK ASSEMBLY

OK

14.	CHECK HARNESS AND CONNECTOR (HOOD LOCK ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the E25 hood lock assembly connector.

(b) Disconnect the M6 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
E25-1 - M6-11 (HCTY)	Always	Below 1 Ω
E25-2 - Body ground	Always	Below 1 Ω
E25-1 or M6-11 (HCTY) - Body ground	Always	10 kΩ or higher

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR