Toyota CH-R Service Manual: Security Indicator Light Does not Blink

DESCRIPTION

The transponder key ECU assembly blinks the security indicator light when the immobiliser is set.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

If the transponder key ECU assembly is replaced, refer to Registration.

Click here

PROCEDURE

1.	SYSTEM CHECK

(a) Check the vehicle specification.

Result	Proceed to
w/o Theft Deterrent System	A
w/ Theft Deterrent System	B

B

GO TO STEP 5

A

2.	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 / Immobiliser / Active Test.

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

Body Electrical > Immobiliser > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Security Indicator	Security indicator light	ON/OFF	-

Body Electrical > Immobiliser > Active Test

Tester Display
Security Indicator

OK:

Security indicator light can be turned on and off using the Techstream.

OK

REPLACE TRANSPONDER KEY ECU ASSEMBLY

NG

3.	CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - SECURITY INDICATOR LIGHT AND BODY GROUND)

(a) Disconnect F22 transponder key ECU assembly connector.

(b) Disconnect the F81 security indicator light connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F81-9 (LP) - F22-8 (IND)	Always	Below 1 Ω
F81-9 (LP) - Body ground	Always	10 kΩ or higher
F22-8 (IND) - Body ground	Always	10 kΩ or higher
F81-5 (E) - Body ground	Always	Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.	CHECK TRANSPONDER KEY ECU ASSEMBLY (TERMINAL IND)

(a) Connect the F22 transponder key ECU assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
F81-9 (LP) - Body ground	Key not in ignition key cylinder	Pulse generation
	Key in ignition key cylinder	Below 1 V

OK

REPLACE SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY)

NG

REPLACE TRANSPONDER KEY ECU ASSEMBLY

5.	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 / Immobiliser or Main Body / Active Test.

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

Body Electrical > Immobiliser > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Security Indicator	Security indicator light	ON/OFF	-

Body Electrical > Immobiliser > Active Test

Tester Display
Security Indicator

Body Electrical > Main Body > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Security Indicator	Security indicator light	ON/OFF	-

Body Electrical > Main Body > Active Test

Tester Display
Security Indicator

Result	Proceed to
Security indicator light operation is normal when performing the "Main Body" and "Immobiliser" Active Test	A
Security indicator light operation is not normal when performing the "Immobiliser" Active Test Security indicator light operation is normal when performing the "Main Body" Active Test	B
Security indicator light operation is normal when performing the "Immobiliser" Active Test Security indicator light operation is not normal when performing the "Main Body" Active Test	C
Security indicator light operation is not normal when performing the "Main Body" and "Immobiliser" Active Test	D

B

GO TO STEP 7

C

GO TO STEP 8

D

GO TO STEP 9

A

6.	CHECK SECURITY INDICATOR LIGHT OPERATION

(a) When the immobiliser is set, check that the security indicator light blinks.*1

OK:

The security indicator light blinks normally.

(b) When the theft deterrent system is in the arming preparation state, check that the security indicator light is on.*2

Click here

OK:

The security indicator light is on.

Result	Proceed to
Both *1 and *2 are OK	A
*1 is NG (*2 is OK)	B
*2 is NG (*1 is OK)	C
Both *1 and *2 are NG	D

A

USE SIMULATION METHOD TO CHECK

B

REPLACE TRANSPONDER KEY ECU ASSEMBLY

C

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

D

REPLACE SECURITY INDICATOR LIGHT (CLOCK ASSEMBLY)

7.	CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - TRANSPONDER KEY ECU ASSEMBLY)

(a) Disconnect the F81 security indicator light connector.

(b) Disconnect the F22 transponder key ECU assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F22-8 (IND) - F81-9 (LP)	Always	Below 1 Ω
F22-8 (IND) - Body ground	Always	10 kΩ or higher
F81-9 (LP) - Body ground	Always	10 kΩ or higher

OK

REPLACE TRANSPONDER KEY ECU ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.	CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - MAIN BODY ECU)

(a) Disconnect the F81 security indicator light connector.

(b) Disconnect the F15 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
F15-15 (IND) - F81-9 (LP)	Always	Below 1 Ω
F15-15 (IND) - Body ground	Always	10 kΩ or higher
F81-9 (LP) - Body ground	Always	10 kΩ or higher

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.	CHECK HARNESS AND CONNECTOR (SECURITY INDICATOR LIGHT - MAIN BODY ECU OR TRANSPONDER KEY ECU)

(a) Disconnect the F81 security indicator light connector.

(b) Disconnect F22 transponder key ECU assembly connector.

(c) Disconnect the F15 main body ECU (multiplex network body ECU) connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F22-8 (IND) - F81-9 (LP)	Always	Below 1 Ω
F15-15 (IND) - F81-9 (LP)	Always	Below 1 Ω
F22-8 (IND) - Body ground	Always	10 kΩ or higher
F15-15 (IND) - Body ground	Always	10 kΩ or higher
F81-9 (LP) - Body ground	Always	10 kΩ or higher
F81-5 (E) - Body ground	Always	Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

10.	REPLACE SECURITY INDICATOR LIGHT

(a) Temporarily replace the security indicator light (clock assembly) with a new or known good one.

Click here

(b) When the immobiliser is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

OK:

Security indicator light blinks.

OK

END (SECURITY INDICATOR LIGHT WAS DEFECTIVE)

NG

11.	REPLACE TRANSPONDER KEY ECU ASSEMBLY

(a) Replace the transponder key ECU assembly with a new or known good one.

Click here

HINT:

Refer to Registration.

Click here

(b) When the immobiliser is set or theft deterrent system is in the arming preparation state, check that the security indicator light blinks.

OK:

Security indicator light blinks.

OK

END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)