PRE-CRASH SAFETY SYSTEM Pre-crash Safety System Cancel Switch Circuit

DESCRIPTION

The driving support ECU assembly receives a pre-crash system on/off signal from the pre-crash system cancel switch assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY

   
   
   1. 

      Text in Illustration

      *a	Component without harness connected (Pre-crash system cancel switch assembly)

      Remove the pre-crash system cancel switch assembly Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 1 - 2 Pressed Below 1 Ω Not pressed 10 kΩ or higher

   
   

   NG

   REPLACE PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY Click here

   OK

2. CHECK HARNESS AND CONNECTOR (PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY - DRIVING SUPPORT ECU ASSEMBLY)

   
   

   1. Disconnect the K1 pre-crash system cancel switch assembly connector.

   2. Disconnect the H75 driving support ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition K1-1 - H75-5 (PBSW) Always Below 1 Ω K1-1 or H75-5 (PBSW) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK HARNESS AND CONNECTOR (PRE-CRASH SYSTEM CANCEL SWITCH ASSEMBLY - BODY GROUND)

   
   

   1. Disconnect the K1 pre-crash 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 K1-2 - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE DRIVING SUPPORT ECU ASSEMBLY Click here