Pre-collision System Cancel Switch Circuit [09/2014 - 11/2017]: Procedure

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

   Body Electrical > Pre-Collision 2 > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   PCS OFF Switch	Pre-collision system cancel switch assembly status	ON or OFF	ON: Pre-collision system cancel switch assembly on OFF: Pre-collision system cancel switch assembly off	-

   Body Electrical > Pre-Collision 2 > Data List 

   Tester Display
   PCS OFF Switch

   OK

   When the pre-collision system cancel switch assembly is operated, the display changes as shown above.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2014 - 11/2017] 

Result: 

NG 

See step  2

1. Remove the pre-collision system cancel switch assembly.

   Refer to REMOVAL [09/2014 - 11/2017]

2. Inspect the pre-collision system cancel switch assembly.

   Refer to INSPECTION [09/2014 - 11/2017]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE PRE-COLLISION SYSTEM CANCEL SWITCH ASSEMBLY. Refer to  REMOVAL [09/2014 - 11/2017] 

Result: 

OK 

See step  3

1. Disconnect the Q1 driving support ECU assembly connector.
2. Disconnect the O92 pre-collision system cancel switch assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q1-5 (PBSW) - O92-2	Always	Below 1 Ω
   Q1-5 (PBSW) or O92-2 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the O92 pre-collision system cancel switch assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O92-1 - Body ground	Always	Below 1 Ω

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  REMOVAL [09/2014 - 01/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR