Security Indicator Light Does not Blink
THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (w/o Smart Key System): Security Indicator Light Does not Blink
- Security Indicator Light Does not Blink
DESCRIPTION
* The transponder key ECU assembly blinks the security indicator light when the immobiliser is set (no key is in the ignition key cylinder).
* w/ Theft Deterrent System:
The main body ECU (multiplex network body ECU) blinks the security indicator light when the theft deterrent system is in the arming preparation state or alarm sounding state.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
If the transponder key ECU assembly is replaced, refer to Registration Engine Immobilizer System (w/o Smart Key System).
PROCEDURE
1. SYSTEM CHECK
(a) Check the vehicle specification.
Result:
B -- PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR LIGHT)
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM
(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.
Immobiliser (Transponder Key ECU Assembly)
OK:
The security indicator light operates normally by using the Active Test.
NG -- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - TRANSPONDER KEY ECU)
OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal
3. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - TRANSPONDER KEY ECU)
(a) Disconnect the security indicator light (air conditioning control assembly) connector.
(b) Disconnect the transponder key ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK TRANSPONDER KEY ECU ASSEMBLY
(a) Reconnect the transponder key ECU assembly connector.
(b) Measure the voltage and check the pulse according to the value(s) in the table below.
Standard Voltage:
NG -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal
OK -- REPLACE SECURITY INDICATOR LIGHT (AIR CONDITIONING CONTROL ASSEMBLY) Removal
5. PERFORM ACTIVE TEST USING TECHSTREAM (SECURITY INDICATOR LIGHT)
(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.
Immobiliser (Transponder Key ECU Assembly)
Main Body (Main Body ECU (Multiplex Network Body ECU))
Result:
B -- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - TRANSPONDER KEY ECU)
C -- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MAIN BODY ECU)
D -- CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU)
A -- Continue to next step.
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 on System Description.*2
OK:
The security indicator light is on normally.
Result:
B -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal
C -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
D -- REPLACE SECURITY INDICATOR LIGHT (AIR CONDITIONING CONTROL ASSEMBLY) Removal
A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
7. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - TRANSPONDER KEY ECU)
(a) Disconnect the security indicator light (air conditioning control assembly) connector.
(b) Disconnect the transponder key ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE TRANSPONDER KEY ECU ASSEMBLY Removal
8. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MAIN BODY ECU)
(a) Disconnect the security indicator light (air conditioning control assembly) connector.
(b) Disconnect the main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
9. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING CONTROL ASSEMBLY - MAIN BODY ECU OR TRANSPONDER KEY ECU)
(a) Disconnect the security indicator light (air conditioning control assembly) connector.
(b) Disconnect transponder key ECU assembly connector.
(c) Disconnect the main body ECU (multiplex network body ECU) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
10. REPLACE SECURITY INDICATOR LIGHT (AIR CONDITIONING CONTROL ASSEMBLY)
(a) Temporarily replace the security indicator light (air conditioning control assembly) with a new or known good one Removal.
(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.
NG -- REPLACE TRANSPONDER KEY ECU ASSEMBLY
OK -- END (AIR CONDITIONING CONTROL ASSEMBLY WAS DEFECTIVE)
11. REPLACE TRANSPONDER KEY ECU ASSEMBLY
(a) Temporarily replace the transponder key ECU assembly with a new or known good one Removal.
(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.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Removal
OK -- END (TRANSPONDER KEY ECU ASSEMBLY WAS DEFECTIVE)