Ignition Switch Circuit [12/2013 - 11/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
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
   ACC SW	Ignition switch	ON or OFF	ON: Ignition switch ACC OFF: Ignition switch LOCK	-
   IG SW	Ignition switch	ON or OFF	ON: Ignition switch ON OFF: Ignition switch LOCK or ACC	-

   Body Electrical > Main Body > Data List 

   Tester Display
   ACC SW
   IG SW

   OK

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

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE.  

Refer to PROBLEM SYMPTOMS TABLE [12/2013 - ] .

Result: 

NG 

Go to next step 

1. Remove the ignition or starter switch assembly.

   for 1AR-FE: Refer to REMOVAL [12/2013 - ] .

   for 2GR-FE: Refer to REMOVAL [12/2013 - 11/2016] .

2. Inspect the ignition or starter switch assembly.

   for 1AR-FE: Refer to INSPECTION [12/2013 - ] .

   for 2GR-FE: Refer to INSPECTION [12/2013 - 11/2016] .

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE IGNITION OR STARTER SWITCH ASSEMBLY 

for 1AR-FE: Refer to REMOVAL [12/2013 - ] .

for 2GR-FE: Refer to REMOVAL [12/2013 - 11/2016] .

Result: 

OK 

Go to next step 

1. Disconnect the 4K instrument panel junction block assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   4K-1 - Body ground	Always	11 to 14 V

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

1. Disconnect the 4A instrument panel junction block assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   4A-27 - Body ground	Always	Below 1 Ω

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F50-8 (IG1) - 4A-16	Always	Below 1 Ω
   F50-8 (IG1) or 4A-16 - Body ground	Always	10 kΩ or higher
   F50-7 (ACC) - 4A-28	Always	Below 1 Ω
   F50-7 (ACC) or 4A-28 - Body ground	Always	10 kΩ or higher
   F50-5 (AM1) - 4A-33	Always	Below 1 Ω
   F50-5 (AM1) or 4A-33 - Body ground	Always	10 kΩ or higher

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

Go to next step 

1. Temporarily replace the instrument panel junction block assembly with a new or known good one.

   Refer to REMOVAL [12/2013 - ] .

Result: 

NEXT 

Go to next step 

1. Check the active arming mode function.

   Refer to SYSTEM DESCRIPTION [12/2013 - 11/2016] 

   OK

   The active arming mode function operates normally.

   Proceed to
   OK
   NG

Result: 

OK 

END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE) 

Result: 

NG 

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). 

Refer to REMOVAL [12/2013 - ] .