Improper Operation [04/2018 -]: Procedure

1. Use the Techstream to check the theft deterrent system operation history around the time the customer reported the malfunction to have occurred.

   Refer to CHECK FOR INTERMITTENT PROBLEMS [04/2018 -] 

   1. Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

   Result

   Result	Proceed to
   There is operation history around the time that the customer reported the malfunction to have occurred, but a malfunction could not be identified during the operation check.	A
   There is operation history around the time that the customer reported the malfunction to have occurred, and the malfunction was identified during the operation check.	B
   There is no operation history around the time that the customer reported the malfunction to have occurred.	C

Result: 

B 

See step  7

Result: 

C 

END 

Result: 

A 

See step  2

1. Check that the security indicator light is illuminated when the theft deterrent system is in the arming preparation state.

   Refer to SYSTEM DESCRIPTION [04/2018 - 08/2020] , or refer to SYSTEM DESCRIPTION [08/2020 -] 

2. Check that the security indicator light blinks when the theft deterrent system is in the arming state.

   Refer to SYSTEM DESCRIPTION [04/2018 - 08/2020] , or refer to SYSTEM DESCRIPTION [08/2020 -] 

   HINT: 

   State of Theft Deterrent System	Contents	Security Indicator Light Condition
   Disarmed state (1), (2)	Theft deterrent system is unset.	Off (Immobilizer system unset) Blinking (Immobilizer system set)
   Arming preparation state	Standby period after theft deterrent system set conditions are met but before theft deterrent system is actually set (approximately 30 seconds). (Theft detection not possible)	On
   Armed state	Theft deterrent system is set. (Theft detection is possible)	Blinking (Immobilizer system set)
   Alarm sounding state	Theft attempt is detected, and alarm operates using turn signal lights, security horn assembly and vehicle horns. (Alarm sounds for 57 seconds)	On

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO OTHER PROBLEM. Refer to  PROBLEM SYMPTOMS TABLE [04/2018 -]  

Result: 

OK 

See step  3

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Main Body > Data List 

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

   Body Electrical > Main Body > Data List 

   Tester Display
   Hood Courtesy SW

   OK

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

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  5

Result: 

OK 

See step  4

1. If the problem symptoms could not be reproduced, explain to the customer the details of the operation history, such as the input signal timings of the key, etc.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]

   OK

   Cause was identified

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -] 

1. Remove the hood lock assembly.

   Refer to REMOVAL [04/2018 -]

2. Inspect the engine hood courtesy switch (hood lock assembly).

   Refer to INSPECTION [04/2018 -]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE HOOD LOCK ASSEMBLY. Refer to  REMOVAL [04/2018 -] 

Result: 

OK 

See step  6

1. Disconnect the A12 engine hood courtesy switch (hood lock assembly) connector.
2. Disconnect the G33 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G33-30 (HCTY) - A12-2 (+)	Always	Below 1 Ω
   G33-30 (HCTY) or A12-2 (+) - Other terminals and body ground	Always	10 kΩ or higher
   A12-1 (E) - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 -] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. If the problem symptoms could not be reproduced, explain to the customer the details of the operation history, such as the input signal timings of the key, etc.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]

   OK

   Cause was identified

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END 

Result: 

NG 

CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]